[Debug] Skip a test that was meant for HHVM.

[Debug] Parse "x not found" errors correctly on php 8.
Enable "native_constant_invocation" CS rule
2026-03-25 01:32:09 +01:00 · 2020-09-09 00:19:14 +02:00 · 2020-09-04 00:12:04 +02:00 · 2020-09-02 18:06:40 +02:00 · 2020-08-09 10:13:48 +02:00 · 2020-07-16 11:41:49 +02:00
19 changed files with 441 additions and 345 deletions
--- a/Debug.php
+++ b/Debug.php
@@ -28,7 +28,7 @@ class Debug
     * @param int  $errorReportingLevel The level of error reporting you want
     * @param bool $displayErrors       Whether to display errors (for development) or just log them (for production)
     */
-    public static function enable($errorReportingLevel = E_ALL, $displayErrors = true)
+    public static function enable($errorReportingLevel = \E_ALL, $displayErrors = true)
    {
        if (static::$enabled) {
            return;
@@ -39,13 +39,13 @@ class Debug
        if (null !== $errorReportingLevel) {
            error_reporting($errorReportingLevel);
        } else {
-            error_reporting(E_ALL);
+            error_reporting(\E_ALL);
        }

        if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
            ini_set('display_errors', 0);
            ExceptionHandler::register();
-        } elseif ($displayErrors && (!filter_var(ini_get('log_errors'), FILTER_VALIDATE_BOOLEAN) || ini_get('error_log'))) {
+        } elseif ($displayErrors && (!filter_var(ini_get('log_errors'), \FILTER_VALIDATE_BOOLEAN) || ini_get('error_log'))) {
            // CLI - display errors only if they're not already logged to STDERR
            ini_set('display_errors', 1);
        }
--- a/DebugClassLoader.php
+++ b/DebugClassLoader.php
@@ -56,7 +56,7 @@ class DebugClassLoader
            } elseif (substr($test, -\strlen($file)) === $file) {
                // filesystem is case insensitive and realpath() normalizes the case of characters
                self::$caseCheck = 1;
-            } elseif (false !== stripos(PHP_OS, 'darwin')) {
+            } elseif (false !== stripos(\PHP_OS, 'darwin')) {
                // on MacOSX, HFS+ is case insensitive but realpath() doesn't normalize the case of characters
                self::$caseCheck = 2;
            } else {
@@ -141,7 +141,7 @@ class DebugClassLoader
     */
    public function loadClass($class)
    {
-        $e = error_reporting(error_reporting() | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);
+        $e = error_reporting(error_reporting() | \E_PARSE | \E_ERROR | \E_CORE_ERROR | \E_COMPILE_ERROR);

        try {
            if ($this->isFinder && !isset($this->loaded[$class])) {
@@ -149,11 +149,11 @@ class DebugClassLoader
                if (!$file = $this->classLoader[0]->findFile($class) ?: false) {
                    // no-op
                } elseif (\function_exists('opcache_is_script_cached') && @opcache_is_script_cached($file)) {
-                    require $file;
+                    include $file;

                    return;
-                } else {
-                    require $file;
+                } elseif (false === include $file) {
+                    return;
                }
            } else {
                \call_user_func($this->classLoader, $class);
@@ -168,7 +168,7 @@ class DebugClassLoader

    private function checkClass($class, $file = null)
    {
-        $exists = null === $file || \class_exists($class, false) || \interface_exists($class, false) || \trait_exists($class, false);
+        $exists = null === $file || class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);

        if (null !== $file && $class && '\\' === $class[0]) {
            $class = substr($class, 1);
@@ -186,18 +186,18 @@ class DebugClassLoader
            }
            $name = $refl->getName();

-            if ($name !== $class && 0 === \strcasecmp($name, $class)) {
+            if ($name !== $class && 0 === strcasecmp($name, $class)) {
                throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: "%s" vs "%s".', $class, $name));
            }

            $deprecations = $this->checkAnnotations($refl, $name);

-            if (isset(self::$php7Reserved[\strtolower($refl->getShortName())])) {
+            if (isset(self::$php7Reserved[strtolower($refl->getShortName())])) {
                $deprecations[] = sprintf('The "%s" class uses the reserved name "%s", it will break on PHP 7 and higher', $name, $refl->getShortName());
            }

            foreach ($deprecations as $message) {
-                @trigger_error($message, E_USER_DEPRECATED);
+                @trigger_error($message, \E_USER_DEPRECATED);
            }
        }

@@ -223,23 +223,23 @@ class DebugClassLoader
        $deprecations = [];

        // Don't trigger deprecations for classes in the same vendor
-        if (2 > $len = 1 + (\strpos($class, '\\') ?: \strpos($class, '_'))) {
+        if (2 > $len = 1 + (strpos($class, '\\') ?: strpos($class, '_'))) {
            $len = 0;
            $ns = '';
        } else {
-            $ns = \str_replace('_', '\\', \substr($class, 0, $len));
+            $ns = str_replace('_', '\\', substr($class, 0, $len));
        }

        // Detect annotations on the class
        if (false !== $doc = $refl->getDocComment()) {
            foreach (['final', 'deprecated', 'internal'] as $annotation) {
-                if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$|\r?\n)#s', $doc, $notice)) {
+                if (false !== strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$|\r?\n)#s', $doc, $notice)) {
                    self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\.?\r?\n( \*)? *(?= |\r?\n|$)#', '', $notice[1]) : '';
                }
            }
        }

-        $parent = \get_parent_class($class);
+        $parent = get_parent_class($class);
        $parentAndOwnInterfaces = $this->getOwnInterfaces($class, $parent);
        if ($parent) {
            $parentAndOwnInterfaces[$parent] = $parent;
@@ -254,22 +254,22 @@ class DebugClassLoader
        }

        // Detect if the parent is annotated
-        foreach ($parentAndOwnInterfaces + \class_uses($class, false) as $use) {
+        foreach ($parentAndOwnInterfaces + class_uses($class, false) as $use) {
            if (!isset(self::$checkedClasses[$use])) {
                $this->checkClass($use);
            }
-            if (isset(self::$deprecated[$use]) && \strncmp($ns, \str_replace('_', '\\', $use), $len) && !isset(self::$deprecated[$class])) {
+            if (isset(self::$deprecated[$use]) && strncmp($ns, str_replace('_', '\\', $use), $len) && !isset(self::$deprecated[$class])) {
                $type = class_exists($class, false) ? 'class' : (interface_exists($class, false) ? 'interface' : 'trait');
                $verb = class_exists($use, false) || interface_exists($class, false) ? 'extends' : (interface_exists($use, false) ? 'implements' : 'uses');

                $deprecations[] = sprintf('The "%s" %s %s "%s" that is deprecated%s.', $class, $type, $verb, $use, self::$deprecated[$use]);
            }
-            if (isset(self::$internal[$use]) && \strncmp($ns, \str_replace('_', '\\', $use), $len)) {
+            if (isset(self::$internal[$use]) && strncmp($ns, str_replace('_', '\\', $use), $len)) {
                $deprecations[] = sprintf('The "%s" %s is considered internal%s. It may change without further notice. You should not use it from "%s".', $use, class_exists($use, false) ? 'class' : (interface_exists($use, false) ? 'interface' : 'trait'), self::$internal[$use], $class);
            }
        }

-        if (\trait_exists($class)) {
+        if (trait_exists($class)) {
            return $deprecations;
        }

@@ -296,7 +296,7 @@ class DebugClassLoader

            if (isset(self::$internalMethods[$class][$method->name])) {
                list($declaringClass, $message) = self::$internalMethods[$class][$method->name];
-                if (\strncmp($ns, $declaringClass, $len)) {
+                if (strncmp($ns, $declaringClass, $len)) {
                    $deprecations[] = sprintf('The "%s::%s()" method is considered internal%s. It may change without further notice. You should not extend it from "%s".', $declaringClass, $method->name, $message, $class);
                }
            }
@@ -307,7 +307,7 @@ class DebugClassLoader
            }

            foreach (['final', 'internal'] as $annotation) {
-                if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$|\r?\n)#s', $doc, $notice)) {
+                if (false !== strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$|\r?\n)#s', $doc, $notice)) {
                    $message = isset($notice[1]) ? preg_replace('#\.?\r?\n( \*)? *(?= |\r?\n|$)#', '', $notice[1]) : '';
                    self::${$annotation.'Methods'}[$class][$method->name] = [$class, $message];
                }
@@ -317,6 +317,12 @@ class DebugClassLoader
        return $deprecations;
    }

+    /**
+     * @param string $file
+     * @param string $class
+     *
+     * @return array|null
+     */
    public function checkCase(\ReflectionClass $refl, $file, $class)
    {
        $real = explode('\\', $class.strrchr($file, '.'));
@@ -333,7 +339,7 @@ class DebugClassLoader
        array_splice($tail, 0, $i + 1);

        if (!$tail) {
-            return;
+            return null;
        }

        $tail = \DIRECTORY_SEPARATOR.implode(\DIRECTORY_SEPARATOR, $tail);
@@ -349,6 +355,8 @@ class DebugClassLoader
        ) {
            return [substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)];
        }
+
+        return null;
    }

    /**
@@ -396,7 +404,7 @@ class DebugClassLoader
        }

        if (isset($dirFiles[$file])) {
-            return $real .= $dirFiles[$file];
+            return $real.$dirFiles[$file];
        }

        $kFile = strtolower($file);
@@ -415,7 +423,7 @@ class DebugClassLoader
            self::$darwinCache[$kDir][1] = $dirFiles;
        }

-        return $real .= $dirFiles[$kFile];
+        return $real.$dirFiles[$kFile];
    }

    /**
--- a/ErrorHandler.php
+++ b/ErrorHandler.php
@@ -49,39 +49,39 @@ use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
 class ErrorHandler
 {
    private $levels = [
-        E_DEPRECATED => 'Deprecated',
-        E_USER_DEPRECATED => 'User Deprecated',
-        E_NOTICE => 'Notice',
-        E_USER_NOTICE => 'User Notice',
-        E_STRICT => 'Runtime Notice',
-        E_WARNING => 'Warning',
-        E_USER_WARNING => 'User Warning',
-        E_COMPILE_WARNING => 'Compile Warning',
-        E_CORE_WARNING => 'Core Warning',
-        E_USER_ERROR => 'User Error',
-        E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
-        E_COMPILE_ERROR => 'Compile Error',
-        E_PARSE => 'Parse Error',
-        E_ERROR => 'Error',
-        E_CORE_ERROR => 'Core Error',
+        \E_DEPRECATED => 'Deprecated',
+        \E_USER_DEPRECATED => 'User Deprecated',
+        \E_NOTICE => 'Notice',
+        \E_USER_NOTICE => 'User Notice',
+        \E_STRICT => 'Runtime Notice',
+        \E_WARNING => 'Warning',
+        \E_USER_WARNING => 'User Warning',
+        \E_COMPILE_WARNING => 'Compile Warning',
+        \E_CORE_WARNING => 'Core Warning',
+        \E_USER_ERROR => 'User Error',
+        \E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
+        \E_COMPILE_ERROR => 'Compile Error',
+        \E_PARSE => 'Parse Error',
+        \E_ERROR => 'Error',
+        \E_CORE_ERROR => 'Core Error',
    ];

    private $loggers = [
-        E_DEPRECATED => [null, LogLevel::INFO],
-        E_USER_DEPRECATED => [null, LogLevel::INFO],
-        E_NOTICE => [null, LogLevel::WARNING],
-        E_USER_NOTICE => [null, LogLevel::WARNING],
-        E_STRICT => [null, LogLevel::WARNING],
-        E_WARNING => [null, LogLevel::WARNING],
-        E_USER_WARNING => [null, LogLevel::WARNING],
-        E_COMPILE_WARNING => [null, LogLevel::WARNING],
-        E_CORE_WARNING => [null, LogLevel::WARNING],
-        E_USER_ERROR => [null, LogLevel::CRITICAL],
-        E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
-        E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
-        E_PARSE => [null, LogLevel::CRITICAL],
-        E_ERROR => [null, LogLevel::CRITICAL],
-        E_CORE_ERROR => [null, LogLevel::CRITICAL],
+        \E_DEPRECATED => [null, LogLevel::INFO],
+        \E_USER_DEPRECATED => [null, LogLevel::INFO],
+        \E_NOTICE => [null, LogLevel::WARNING],
+        \E_USER_NOTICE => [null, LogLevel::WARNING],
+        \E_STRICT => [null, LogLevel::WARNING],
+        \E_WARNING => [null, LogLevel::WARNING],
+        \E_USER_WARNING => [null, LogLevel::WARNING],
+        \E_COMPILE_WARNING => [null, LogLevel::WARNING],
+        \E_CORE_WARNING => [null, LogLevel::WARNING],
+        \E_USER_ERROR => [null, LogLevel::CRITICAL],
+        \E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+        \E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+        \E_PARSE => [null, LogLevel::CRITICAL],
+        \E_ERROR => [null, LogLevel::CRITICAL],
+        \E_CORE_ERROR => [null, LogLevel::CRITICAL],
    ];

    private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
@@ -154,7 +154,7 @@ class ErrorHandler
            $handler->setExceptionHandler($prev);
        }

-        $handler->throwAt(E_ALL & $handler->thrownErrors, true);
+        $handler->throwAt(\E_ALL & $handler->thrownErrors, true);

        return $handler;
    }
@@ -176,7 +176,7 @@ class ErrorHandler
     * @param array|int       $levels  An array map of E_* to LogLevel::* or an integer bit field of E_* constants
     * @param bool            $replace Whether to replace or not any existing logger
     */
-    public function setDefaultLogger(LoggerInterface $logger, $levels = E_ALL, $replace = false)
+    public function setDefaultLogger(LoggerInterface $logger, $levels = \E_ALL, $replace = false)
    {
        $loggers = [];

@@ -188,7 +188,7 @@ class ErrorHandler
            }
        } else {
            if (null === $levels) {
-                $levels = E_ALL;
+                $levels = \E_ALL;
            }
            foreach ($this->loggers as $type => $log) {
                if (($type & $levels) && (empty($log[0]) || $replace || $log[0] === $this->bootstrappingLogger)) {
@@ -223,14 +223,14 @@ class ErrorHandler
            if (!\is_array($log)) {
                $log = [$log];
            } elseif (!\array_key_exists(0, $log)) {
-                throw new \InvalidArgumentException('No logger provided');
+                throw new \InvalidArgumentException('No logger provided.');
            }
            if (null === $log[0]) {
                $this->loggedErrors &= ~$type;
            } elseif ($log[0] instanceof LoggerInterface) {
                $this->loggedErrors |= $type;
            } else {
-                throw new \InvalidArgumentException('Invalid logger provided');
+                throw new \InvalidArgumentException('Invalid logger provided.');
            }
            $this->loggers[$type] = $log + $prev[$type];

@@ -242,7 +242,7 @@ class ErrorHandler

        if ($flush) {
            foreach ($this->bootstrappingLogger->cleanLogs() as $log) {
-                $type = $log[2]['exception'] instanceof \ErrorException ? $log[2]['exception']->getSeverity() : E_ERROR;
+                $type = $log[2]['exception'] instanceof \ErrorException ? $log[2]['exception']->getSeverity() : \E_ERROR;
                if (!isset($flush[$type])) {
                    $this->bootstrappingLogger->log($log[0], $log[1], $log[2]);
                } elseif ($this->loggers[$type][0]) {
@@ -280,7 +280,7 @@ class ErrorHandler
    public function throwAt($levels, $replace = false)
    {
        $prev = $this->thrownErrors;
-        $this->thrownErrors = ($levels | E_RECOVERABLE_ERROR | E_USER_ERROR) & ~E_USER_DEPRECATED & ~E_DEPRECATED;
+        $this->thrownErrors = ($levels | \E_RECOVERABLE_ERROR | \E_USER_ERROR) & ~\E_USER_DEPRECATED & ~\E_DEPRECATED;
        if (!$replace) {
            $this->thrownErrors |= $prev;
        }
@@ -382,11 +382,15 @@ class ErrorHandler
     */
    public function handleError($type, $message, $file, $line)
    {
+        if (\PHP_VERSION_ID >= 70300 && \E_WARNING === $type && '"' === $message[0] && false !== strpos($message, '" targeting switch is equivalent to "break')) {
+            $type = \E_DEPRECATED;
+        }
+
        // Level is the current error reporting level to manage silent error.
        $level = error_reporting();
        $silenced = 0 === ($level & $type);
        // Strong errors are not authorized to be silenced.
-        $level |= E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED;
+        $level |= \E_RECOVERABLE_ERROR | \E_USER_ERROR | \E_DEPRECATED | \E_USER_DEPRECATED;
        $log = $this->loggedErrors & $type;
        $throw = $this->thrownErrors & $type & $level;
        $type &= $level | $this->screamedErrors;
@@ -397,7 +401,7 @@ class ErrorHandler
        $scope = $this->scopedErrors & $type;

        if (4 < $numArgs = \func_num_args()) {
-            $context = $scope ? (func_get_arg(4) ?: []) : [];
+            $context = func_get_arg(4) ?: [];
            $backtrace = 5 < $numArgs ? func_get_arg(5) : null; // defined on HHVM
        } else {
            $context = [];
@@ -410,7 +414,7 @@ class ErrorHandler
            $context = $e;
        }

-        if (null !== $backtrace && $type & E_ERROR) {
+        if (null !== $backtrace && $type & \E_ERROR) {
            // E_ERROR fatal errors are triggered on HHVM when
            // hhvm.error_handling.call_user_handler_on_fatals=1
            // which is the way to get their backtrace.
@@ -426,7 +430,7 @@ class ErrorHandler
            self::$toStringException = null;
        } elseif (!$throw && !($type & $level)) {
            if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
-                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : [];
+                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : [];
                $errorAsException = new SilencedErrorContext($type, $file, $line, $lightTrace);
            } elseif (isset(self::$silencedErrorCache[$id][$message])) {
                $lightTrace = null;
@@ -445,7 +449,7 @@ class ErrorHandler
                self::$silencedErrorCache[$id][$message] = $errorAsException;
            }
            if (null === $lightTrace) {
-                return;
+                return true;
            }
        } else {
            if ($scope) {
@@ -465,7 +469,7 @@ class ErrorHandler
        }

        if ($throw) {
-            if (E_USER_ERROR & $type) {
+            if (\PHP_VERSION_ID < 70400 && \E_USER_ERROR & $type) {
                for ($i = 1; isset($backtrace[$i]); ++$i) {
                    if (isset($backtrace[$i]['function'], $backtrace[$i]['type'], $backtrace[$i - 1]['function'])
                        && '__toString' === $backtrace[$i]['function']
@@ -517,7 +521,7 @@ class ErrorHandler
                $errorAsException ? ['exception' => $errorAsException] : [],
            ];
        } else {
-            if (!\defined('HHVM_VERSION')) {
+            if (\PHP_VERSION_ID < (\PHP_VERSION_ID < 70400 ? 70316 : 70404) && !\defined('HHVM_VERSION')) {
                $currentErrorHandler = set_error_handler('var_dump');
                restore_error_handler();
            }
@@ -529,7 +533,7 @@ class ErrorHandler
            } finally {
                $this->isRecursive = false;

-                if (!\defined('HHVM_VERSION')) {
+                if (\PHP_VERSION_ID < (\PHP_VERSION_ID < 70400 ? 70316 : 70404) && !\defined('HHVM_VERSION')) {
                    set_error_handler($currentErrorHandler);
                }
            }
@@ -554,7 +558,7 @@ class ErrorHandler
        if (!$exception instanceof \Exception) {
            $exception = new FatalThrowableError($exception);
        }
-        $type = $exception instanceof FatalErrorException ? $exception->getSeverity() : E_ERROR;
+        $type = $exception instanceof FatalErrorException ? $exception->getSeverity() : \E_ERROR;
        $handlerException = null;

        if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
@@ -594,7 +598,9 @@ class ErrorHandler
        $this->exceptionHandler = null;
        try {
            if (null !== $exceptionHandler) {
-                return \call_user_func($exceptionHandler, $exception);
+                $exceptionHandler($exception);
+
+                return;
            }
            $handlerException = $handlerException ?: $exception;
        } catch (\Exception $handlerException) {
@@ -668,7 +674,7 @@ class ErrorHandler
            // Handled below
        }

-        if ($error && $error['type'] &= E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR) {
+        if ($error && $error['type'] &= \E_PARSE | \E_ERROR | \E_CORE_ERROR | \E_COMPILE_ERROR) {
            // Let's not throw anymore but keep logging
            $handler->throwAt(0, true);
            $trace = isset($error['backtrace']) ? $error['backtrace'] : null;
@@ -710,9 +716,9 @@ class ErrorHandler
     */
    public static function stackErrors()
    {
-        @trigger_error('Support for stacking errors is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
+        @trigger_error('Support for stacking errors is deprecated since Symfony 3.4 and will be removed in 4.0.', \E_USER_DEPRECATED);

-        self::$stackedErrorLevels[] = error_reporting(error_reporting() | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);
+        self::$stackedErrorLevels[] = error_reporting(error_reporting() | \E_PARSE | \E_ERROR | \E_CORE_ERROR | \E_COMPILE_ERROR);
    }

    /**
@@ -722,13 +728,13 @@ class ErrorHandler
     */
    public static function unstackErrors()
    {
-        @trigger_error('Support for unstacking errors is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
+        @trigger_error('Support for unstacking errors is deprecated since Symfony 3.4 and will be removed in 4.0.', \E_USER_DEPRECATED);

        $level = array_pop(self::$stackedErrorLevels);

        if (null !== $level) {
            $errorReportingLevel = error_reporting($level);
-            if ($errorReportingLevel !== ($level | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR)) {
+            if ($errorReportingLevel !== ($level | \E_PARSE | \E_ERROR | \E_CORE_ERROR | \E_COMPILE_ERROR)) {
                // If the user changed the error level, do not overwrite it
                error_reporting($errorReportingLevel);
            }
--- a/Exception/ContextErrorException.php
+++ b/Exception/ContextErrorException.php
@@ -33,7 +33,7 @@ class ContextErrorException extends \ErrorException
     */
    public function getContext()
    {
-        @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), \E_USER_DEPRECATED);

        return $this->context;
    }
--- a/Exception/FatalThrowableError.php
+++ b/Exception/FatalThrowableError.php
@@ -22,13 +22,13 @@ class FatalThrowableError extends FatalErrorException
    {
        if ($e instanceof \ParseError) {
            $message = 'Parse error: '.$e->getMessage();
-            $severity = E_PARSE;
+            $severity = \E_PARSE;
        } elseif ($e instanceof \TypeError) {
            $message = 'Type error: '.$e->getMessage();
-            $severity = E_RECOVERABLE_ERROR;
+            $severity = \E_RECOVERABLE_ERROR;
        } else {
            $message = $e->getMessage();
-            $severity = E_ERROR;
+            $severity = \E_ERROR;
        }

        \ErrorException::__construct(
--- a/Exception/SilencedErrorContext.php
+++ b/Exception/SilencedErrorContext.php
@@ -54,7 +54,7 @@ class SilencedErrorContext implements \JsonSerializable
        return $this->trace;
    }

-    public function JsonSerialize()
+    public function jsonSerialize()
    {
        return [
            'severity' => $this->severity,
--- a/ExceptionHandler.php
+++ b/ExceptionHandler.php
@@ -377,7 +377,7 @@ EOF;

        if (\is_string($fmt)) {
            $i = strpos($f = $fmt, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: \strlen($f);
-            $fmt = [substr($f, 0, $i)] + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
+            $fmt = [substr($f, 0, $i)] + preg_split('/&([^>]++)>/', substr($f, $i), -1, \PREG_SPLIT_DELIM_CAPTURE);

            for ($i = 1; isset($fmt[$i]); ++$i) {
                if (0 === strpos($path, $k = $fmt[$i++])) {
@@ -434,7 +434,7 @@ EOF;
     */
    private function escapeHtml($str)
    {
-        return htmlspecialchars($str, ENT_COMPAT | ENT_SUBSTITUTE, $this->charset);
+        return htmlspecialchars($str, \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset);
    }

    private function getSymfonyGhostAsSvg()
--- a/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php
+++ b/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php
@@ -29,48 +29,34 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
     */
    public function handleError(array $error, FatalErrorException $exception)
    {
-        $messageLen = \strlen($error['message']);
-        $notFoundSuffix = '\' not found';
-        $notFoundSuffixLen = \strlen($notFoundSuffix);
-        if ($notFoundSuffixLen > $messageLen) {
-            return;
+        if (!preg_match('/^(Class|Interface|Trait) [\'"]([^\'"]+)[\'"] not found$/', $error['message'], $matches)) {
+            return null;
+        }
+        $typeName = strtolower($matches[1]);
+        $fullyQualifiedClassName = $matches[2];
+
+        if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedClassName, '\\')) {
+            $className = substr($fullyQualifiedClassName, $namespaceSeparatorIndex + 1);
+            $namespacePrefix = substr($fullyQualifiedClassName, 0, $namespaceSeparatorIndex);
+            $message = sprintf('Attempted to load %s "%s" from namespace "%s".', $typeName, $className, $namespacePrefix);
+            $tail = ' for another namespace?';
+        } else {
+            $className = $fullyQualifiedClassName;
+            $message = sprintf('Attempted to load %s "%s" from the global namespace.', $typeName, $className);
+            $tail = '?';
        }

-        if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
-            return;
-        }
-
-        foreach (['class', 'interface', 'trait'] as $typeName) {
-            $prefix = ucfirst($typeName).' \'';
-            $prefixLen = \strlen($prefix);
-            if (0 !== strpos($error['message'], $prefix)) {
-                continue;
-            }
-
-            $fullyQualifiedClassName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
-            if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedClassName, '\\')) {
-                $className = substr($fullyQualifiedClassName, $namespaceSeparatorIndex + 1);
-                $namespacePrefix = substr($fullyQualifiedClassName, 0, $namespaceSeparatorIndex);
-                $message = sprintf('Attempted to load %s "%s" from namespace "%s".', $typeName, $className, $namespacePrefix);
-                $tail = ' for another namespace?';
+        if ($candidates = $this->getClassCandidates($className)) {
+            $tail = array_pop($candidates).'"?';
+            if ($candidates) {
+                $tail = ' for e.g. "'.implode('", "', $candidates).'" or "'.$tail;
            } else {
-                $className = $fullyQualifiedClassName;
-                $message = sprintf('Attempted to load %s "%s" from the global namespace.', $typeName, $className);
-                $tail = '?';
+                $tail = ' for "'.$tail;
            }
-
-            if ($candidates = $this->getClassCandidates($className)) {
-                $tail = array_pop($candidates).'"?';
-                if ($candidates) {
-                    $tail = ' for e.g. "'.implode('", "', $candidates).'" or "'.$tail;
-                } else {
-                    $tail = ' for "'.$tail;
-                }
-            }
-            $message .= "\nDid you forget a \"use\" statement".$tail;
-
-            return new ClassNotFoundException($message, $exception);
        }
+        $message .= "\nDid you forget a \"use\" statement".$tail;
+
+        return new ClassNotFoundException($message, $exception);
    }

    /**
@@ -185,13 +171,19 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
            }
        }

-        require_once $file;
+        try {
+            require_once $file;
+        } catch (\Throwable $e) {
+            return null;
+        }

        foreach ($candidates as $candidate) {
            if ($this->classExists($candidate)) {
                return $candidate;
            }
        }
+
+        return null;
    }

    /**
--- a/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php
+++ b/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php
@@ -30,17 +30,17 @@ class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
        $notFoundSuffix = '()';
        $notFoundSuffixLen = \strlen($notFoundSuffix);
        if ($notFoundSuffixLen > $messageLen) {
-            return;
+            return null;
        }

        if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
-            return;
+            return null;
        }

        $prefix = 'Call to undefined function ';
        $prefixLen = \strlen($prefix);
        if (0 !== strpos($error['message'], $prefix)) {
-            return;
+            return null;
        }

        $fullyQualifiedFunctionName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
--- a/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php
+++ b/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php
@@ -28,7 +28,7 @@ class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
    {
        preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $error['message'], $matches);
        if (!$matches) {
-            return;
+            return null;
        }

        $className = $matches[1];
--- a/2
+++ b/2
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2019 Fabien Potencier
+Copyright (c) 2004-2020 Fabien Potencier

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/README.md
+++ b/README.md
@@ -3,10 +3,22 @@ Debug Component

 The Debug component provides tools to ease debugging PHP code.

+Getting Started
+---------------
+
+```
+$ composer install symfony/debug
+```
+
+```php
+use Symfony\Component\Debug\Debug;
+
+Debug::enable();
+```
+
 Resources
 ---------

-  * [Documentation](https://symfony.com/doc/current/components/debug/index.html)
  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
  * [Report issues](https://github.com/symfony/symfony/issues) and
    [send Pull Requests](https://github.com/symfony/symfony/pulls)
--- a/Tests/DebugClassLoaderTest.php
+++ b/Tests/DebugClassLoaderTest.php
@@ -59,21 +59,19 @@ class DebugClassLoaderTest extends TestCase
        $this->fail('DebugClassLoader did not register');
    }

-    /**
-     * @expectedException \Exception
-     * @expectedExceptionMessage boo
-     */
    public function testThrowingClass()
    {
+        $this->expectException('Exception');
+        $this->expectExceptionMessage('boo');
        try {
-            class_exists(__NAMESPACE__.'\Fixtures\Throwing');
+            class_exists(Fixtures\Throwing::class);
            $this->fail('Exception expected');
        } catch (\Exception $e) {
            $this->assertSame('boo', $e->getMessage());
        }

        // the second call also should throw
-        class_exists(__NAMESPACE__.'\Fixtures\Throwing');
+        class_exists(Fixtures\Throwing::class);
    }

    public function testUnsilencing()
@@ -92,13 +90,16 @@ class DebugClassLoaderTest extends TestCase

        // See below: this will fail with parse error
        // but this should not be @-silenced.
-        @class_exists(__NAMESPACE__.'\TestingUnsilencing', true);
+        @class_exists(TestingUnsilencing::class, true);

        $output = ob_get_clean();

        $this->assertStringMatchesFormat('%aParse error%a', $output);
    }

+    /**
+     * @requires PHP < 8.0
+     */
    public function testStacking()
    {
        // the ContextErrorException must not be loaded to test the workaround
@@ -127,10 +128,10 @@ class DebugClassLoaderTest extends TestCase
            // if an exception is thrown, the test passed
            $this->assertStringStartsWith(__FILE__, $exception->getFile());
            if (\PHP_VERSION_ID < 70000) {
-                $this->assertRegExp('/^Runtime Notice: Declaration/', $exception->getMessage());
+                $this->assertMatchesRegularExpression('/^Runtime Notice: Declaration/', $exception->getMessage());
                $this->assertEquals(E_STRICT, $exception->getSeverity());
            } else {
-                $this->assertRegExp('/^Warning: Declaration/', $exception->getMessage());
+                $this->assertMatchesRegularExpression('/^Warning: Declaration/', $exception->getMessage());
                $this->assertEquals(E_WARNING, $exception->getSeverity());
            }
        } finally {
@@ -139,34 +140,28 @@ class DebugClassLoaderTest extends TestCase
        }
    }

-    /**
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Case mismatch between loaded and declared class names
-     */
    public function testNameCaseMismatch()
    {
-        class_exists(__NAMESPACE__.'\TestingCaseMismatch', true);
+        $this->expectException('RuntimeException');
+        $this->expectExceptionMessage('Case mismatch between loaded and declared class names');
+        class_exists(TestingCaseMismatch::class, true);
    }

-    /**
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Case mismatch between class and real file names
-     */
    public function testFileCaseMismatch()
    {
+        $this->expectException('RuntimeException');
+        $this->expectExceptionMessage('Case mismatch between class and real file names');
        if (!file_exists(__DIR__.'/Fixtures/CaseMismatch.php')) {
            $this->markTestSkipped('Can only be run on case insensitive filesystems');
        }

-        class_exists(__NAMESPACE__.'\Fixtures\CaseMismatch', true);
+        class_exists(Fixtures\CaseMismatch::class, true);
    }

-    /**
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Case mismatch between loaded and declared class names
-     */
    public function testPsr4CaseMismatch()
    {
+        $this->expectException('RuntimeException');
+        $this->expectExceptionMessage('Case mismatch between loaded and declared class names');
        class_exists(__NAMESPACE__.'\Fixtures\Psr4CaseMismatch', true);
    }

@@ -182,7 +177,7 @@ class DebugClassLoaderTest extends TestCase

    public function testClassAlias()
    {
-        $this->assertTrue(class_exists(__NAMESPACE__.'\Fixtures\ClassAlias', true));
+        $this->assertTrue(class_exists(Fixtures\ClassAlias::class, true));
    }

    /**
@@ -224,7 +219,7 @@ class DebugClassLoaderTest extends TestCase
        $e = error_reporting(0);
        trigger_error('', E_USER_NOTICE);

-        class_exists('Test\\'.__NAMESPACE__.'\\NonDeprecatedInterfaceClass', true);
+        class_exists('Test\\'.NonDeprecatedInterfaceClass::class, true);

        error_reporting($e);
        restore_error_handler();
@@ -272,7 +267,7 @@ class DebugClassLoaderTest extends TestCase
        $e = error_reporting(0);
        trigger_error('', E_USER_NOTICE);

-        class_exists('Test\\'.__NAMESPACE__.'\\Float', true);
+        class_exists('Test\\'.Float::class, true);

        error_reporting($e);
        restore_error_handler();
@@ -297,7 +292,7 @@ class DebugClassLoaderTest extends TestCase
        require __DIR__.'/Fixtures/FinalClasses.php';

        $i = 1;
-        while (class_exists($finalClass = __NAMESPACE__.'\\Fixtures\\FinalClass'.$i++, false)) {
+        while (class_exists($finalClass = Fixtures\FinalClass::class.$i++, false)) {
            spl_autoload_call($finalClass);
            class_exists('Test\\'.__NAMESPACE__.'\\Extends'.substr($finalClass, strrpos($finalClass, '\\') + 1), true);
        }
@@ -323,7 +318,7 @@ class DebugClassLoaderTest extends TestCase
        set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
        $e = error_reporting(E_USER_DEPRECATED);

-        class_exists(__NAMESPACE__.'\\Fixtures\\ExtendedFinalMethod', true);
+        class_exists(Fixtures\ExtendedFinalMethod::class, true);

        error_reporting($e);
        restore_error_handler();
@@ -342,7 +337,7 @@ class DebugClassLoaderTest extends TestCase
        $e = error_reporting(0);
        trigger_error('', E_USER_NOTICE);

-        class_exists('Test\\'.__NAMESPACE__.'\\ExtendsAnnotatedClass', true);
+        class_exists('Test\\'.ExtendsAnnotatedClass::class, true);

        error_reporting($e);
        restore_error_handler();
@@ -359,7 +354,7 @@ class DebugClassLoaderTest extends TestCase
        set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
        $e = error_reporting(E_USER_DEPRECATED);

-        class_exists('Test\\'.__NAMESPACE__.'\\ExtendsInternals', true);
+        class_exists('Test\\'.ExtendsInternals::class, true);

        error_reporting($e);
        restore_error_handler();
@@ -378,7 +373,7 @@ class DebugClassLoaderTest extends TestCase
        set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
        $e = error_reporting(E_USER_DEPRECATED);

-        class_exists('Test\\'.__NAMESPACE__.'\\UseTraitWithInternalMethod', true);
+        class_exists('Test\\'.UseTraitWithInternalMethod::class, true);

        error_reporting($e);
        restore_error_handler();
@@ -388,7 +383,7 @@ class DebugClassLoaderTest extends TestCase

    public function testEvaluatedCode()
    {
-        $this->assertTrue(class_exists(__NAMESPACE__.'\Fixtures\DefinitionInEvaluatedCode', true));
+        $this->assertTrue(class_exists(Fixtures\DefinitionInEvaluatedCode::class, true));
    }
 }

@@ -407,11 +402,11 @@ class ClassLoader
    {
        $fixtureDir = __DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR;

-        if (__NAMESPACE__.'\TestingUnsilencing' === $class) {
+        if (TestingUnsilencing::class === $class) {
            eval('-- parse error --');
-        } elseif (__NAMESPACE__.'\TestingStacking' === $class) {
+        } elseif (TestingStacking::class === $class) {
            eval('namespace '.__NAMESPACE__.'; class TestingStacking { function foo() {} }');
-        } elseif (__NAMESPACE__.'\TestingCaseMismatch' === $class) {
+        } elseif (TestingCaseMismatch::class === $class) {
            eval('namespace '.__NAMESPACE__.'; class TestingCaseMisMatch {}');
        } elseif (__NAMESPACE__.'\Fixtures\Psr4CaseMismatch' === $class) {
            return $fixtureDir.'psr4'.\DIRECTORY_SEPARATOR.'Psr4CaseMismatch.php';
@@ -421,31 +416,33 @@ class ClassLoader
            return $fixtureDir.'notPsr0Bis.php';
        } elseif ('Symfony\Bridge\Debug\Tests\Fixtures\ExtendsDeprecatedParent' === $class) {
            eval('namespace Symfony\Bridge\Debug\Tests\Fixtures; class ExtendsDeprecatedParent extends \\'.__NAMESPACE__.'\Fixtures\DeprecatedClass {}');
-        } elseif ('Test\\'.__NAMESPACE__.'\DeprecatedParentClass' === $class) {
+        } elseif ('Test\\'.DeprecatedParentClass::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class DeprecatedParentClass extends \\'.__NAMESPACE__.'\Fixtures\DeprecatedClass {}');
-        } elseif ('Test\\'.__NAMESPACE__.'\DeprecatedInterfaceClass' === $class) {
+        } elseif ('Test\\'.DeprecatedInterfaceClass::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class DeprecatedInterfaceClass implements \\'.__NAMESPACE__.'\Fixtures\DeprecatedInterface {}');
-        } elseif ('Test\\'.__NAMESPACE__.'\NonDeprecatedInterfaceClass' === $class) {
+        } elseif ('Test\\'.NonDeprecatedInterfaceClass::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class NonDeprecatedInterfaceClass implements \\'.__NAMESPACE__.'\Fixtures\NonDeprecatedInterface {}');
-        } elseif ('Test\\'.__NAMESPACE__.'\Float' === $class) {
+        } elseif ('Test\\'.Float::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class Float {}');
-        } elseif (0 === strpos($class, 'Test\\'.__NAMESPACE__.'\ExtendsFinalClass')) {
+        } elseif (0 === strpos($class, 'Test\\'.ExtendsFinalClass::class)) {
            $classShortName = substr($class, strrpos($class, '\\') + 1);
            eval('namespace Test\\'.__NAMESPACE__.'; class '.$classShortName.' extends \\'.__NAMESPACE__.'\Fixtures\\'.substr($classShortName, 7).' {}');
-        } elseif ('Test\\'.__NAMESPACE__.'\ExtendsAnnotatedClass' === $class) {
+        } elseif ('Test\\'.ExtendsAnnotatedClass::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class ExtendsAnnotatedClass extends \\'.__NAMESPACE__.'\Fixtures\AnnotatedClass {
                public function deprecatedMethod() { }
            }');
-        } elseif ('Test\\'.__NAMESPACE__.'\ExtendsInternals' === $class) {
+        } elseif ('Test\\'.ExtendsInternals::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class ExtendsInternals extends ExtendsInternalsParent {
                use \\'.__NAMESPACE__.'\Fixtures\InternalTrait;

                public function internalMethod() { }
            }');
-        } elseif ('Test\\'.__NAMESPACE__.'\ExtendsInternalsParent' === $class) {
+        } elseif ('Test\\'.ExtendsInternalsParent::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class ExtendsInternalsParent extends \\'.__NAMESPACE__.'\Fixtures\InternalClass implements \\'.__NAMESPACE__.'\Fixtures\InternalInterface { }');
-        } elseif ('Test\\'.__NAMESPACE__.'\UseTraitWithInternalMethod' === $class) {
+        } elseif ('Test\\'.UseTraitWithInternalMethod::class === $class) {
            eval('namespace Test\\'.__NAMESPACE__.'; class UseTraitWithInternalMethod { use \\'.__NAMESPACE__.'\Fixtures\TraitWithInternalMethod; }');
        }
+
+        return null;
    }
 }
--- a/Tests/ErrorHandlerTest.php
+++ b/Tests/ErrorHandlerTest.php
@@ -70,15 +70,15 @@ class ErrorHandlerTest extends TestCase

    public function testErrorGetLast()
    {
-        $handler = ErrorHandler::register();
        $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+        $handler = ErrorHandler::register();
        $handler->setDefaultLogger($logger);
-        $handler->screamAt(E_ALL);
+        $handler->screamAt(\E_ALL);

        try {
-            @trigger_error('Hello', E_USER_WARNING);
+            @trigger_error('Hello', \E_USER_WARNING);
            $expected = [
-                'type' => E_USER_WARNING,
+                'type' => \E_USER_WARNING,
                'message' => 'Hello',
                'file' => __FILE__,
                'line' => __LINE__ - 5,
@@ -101,9 +101,14 @@ class ErrorHandlerTest extends TestCase
            $this->fail('ErrorException expected');
        } catch (\ErrorException $exception) {
            // if an exception is thrown, the test passed
-            $this->assertEquals(E_NOTICE, $exception->getSeverity());
+            if (\PHP_VERSION_ID < 80000) {
+                $this->assertEquals(\E_NOTICE, $exception->getSeverity());
+                $this->assertMatchesRegularExpression('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
+            } else {
+                $this->assertEquals(\E_WARNING, $exception->getSeverity());
+                $this->assertMatchesRegularExpression('/^Warning: Undefined variable \$(foo|bar)/', $exception->getMessage());
+            }
            $this->assertEquals(__FILE__, $exception->getFile());
-            $this->assertRegExp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());

            $trace = $exception->getTrace();

@@ -133,7 +138,7 @@ class ErrorHandlerTest extends TestCase
        try {
            $handler = ErrorHandler::register();
            $handler->throwAt(3, true);
-            $this->assertEquals(3 | E_RECOVERABLE_ERROR | E_USER_ERROR, $handler->throwAt(0));
+            $this->assertEquals(3 | \E_RECOVERABLE_ERROR | \E_USER_ERROR, $handler->throwAt(0));
        } finally {
            restore_error_handler();
            restore_exception_handler();
@@ -143,29 +148,28 @@ class ErrorHandlerTest extends TestCase
    public function testDefaultLogger()
    {
        try {
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
            $handler = ErrorHandler::register();

-            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
-
-            $handler->setDefaultLogger($logger, E_NOTICE);
-            $handler->setDefaultLogger($logger, [E_USER_NOTICE => LogLevel::CRITICAL]);
+            $handler->setDefaultLogger($logger, \E_NOTICE);
+            $handler->setDefaultLogger($logger, [\E_USER_NOTICE => LogLevel::CRITICAL]);

            $loggers = [
-                E_DEPRECATED => [null, LogLevel::INFO],
-                E_USER_DEPRECATED => [null, LogLevel::INFO],
-                E_NOTICE => [$logger, LogLevel::WARNING],
-                E_USER_NOTICE => [$logger, LogLevel::CRITICAL],
-                E_STRICT => [null, LogLevel::WARNING],
-                E_WARNING => [null, LogLevel::WARNING],
-                E_USER_WARNING => [null, LogLevel::WARNING],
-                E_COMPILE_WARNING => [null, LogLevel::WARNING],
-                E_CORE_WARNING => [null, LogLevel::WARNING],
-                E_USER_ERROR => [null, LogLevel::CRITICAL],
-                E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
-                E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
-                E_PARSE => [null, LogLevel::CRITICAL],
-                E_ERROR => [null, LogLevel::CRITICAL],
-                E_CORE_ERROR => [null, LogLevel::CRITICAL],
+                \E_DEPRECATED => [null, LogLevel::INFO],
+                \E_USER_DEPRECATED => [null, LogLevel::INFO],
+                \E_NOTICE => [$logger, LogLevel::WARNING],
+                \E_USER_NOTICE => [$logger, LogLevel::CRITICAL],
+                \E_STRICT => [null, LogLevel::WARNING],
+                \E_WARNING => [null, LogLevel::WARNING],
+                \E_USER_WARNING => [null, LogLevel::WARNING],
+                \E_COMPILE_WARNING => [null, LogLevel::WARNING],
+                \E_CORE_WARNING => [null, LogLevel::WARNING],
+                \E_USER_ERROR => [null, LogLevel::CRITICAL],
+                \E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+                \E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+                \E_PARSE => [null, LogLevel::CRITICAL],
+                \E_ERROR => [null, LogLevel::CRITICAL],
+                \E_CORE_ERROR => [null, LogLevel::CRITICAL],
            ];
            $this->assertSame($loggers, $handler->setLoggers([]));
        } finally {
@@ -206,15 +210,15 @@ class ErrorHandlerTest extends TestCase
            restore_exception_handler();

            $handler = ErrorHandler::register();
-            $handler->throwAt(E_USER_DEPRECATED, true);
-            $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
+            $handler->throwAt(\E_USER_DEPRECATED, true);
+            $this->assertFalse($handler->handleError(\E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));

            restore_error_handler();
            restore_exception_handler();

            $handler = ErrorHandler::register();
-            $handler->throwAt(E_DEPRECATED, true);
-            $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, []));
+            $handler->throwAt(\E_DEPRECATED, true);
+            $this->assertFalse($handler->handleError(\E_DEPRECATED, 'foo', 'foo.php', 12, []));

            restore_error_handler();
            restore_exception_handler();
@@ -228,18 +232,18 @@ class ErrorHandlerTest extends TestCase
                $exception = $context['exception'];
                $this->assertInstanceOf(\ErrorException::class, $exception);
                $this->assertSame('User Deprecated: foo', $exception->getMessage());
-                $this->assertSame(E_USER_DEPRECATED, $exception->getSeverity());
+                $this->assertSame(\E_USER_DEPRECATED, $exception->getSeverity());
            };

            $logger
                ->expects($this->once())
                ->method('log')
-                ->will($this->returnCallback($warnArgCheck))
+                ->willReturnCallback($warnArgCheck)
            ;

            $handler = ErrorHandler::register();
-            $handler->setDefaultLogger($logger, E_USER_DEPRECATED);
-            $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
+            $handler->setDefaultLogger($logger, \E_USER_DEPRECATED);
+            $this->assertTrue($handler->handleError(\E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));

            restore_error_handler();
            restore_exception_handler();
@@ -248,11 +252,17 @@ class ErrorHandlerTest extends TestCase

            $line = null;
            $logArgCheck = function ($level, $message, $context) use (&$line) {
-                $this->assertEquals('Notice: Undefined variable: undefVar', $message);
                $this->assertArrayHasKey('exception', $context);
                $exception = $context['exception'];
+
+                if (\PHP_VERSION_ID < 80000) {
+                    $this->assertEquals('Notice: Undefined variable: undefVar', $message);
+                    $this->assertSame(\E_NOTICE, $exception->getSeverity());
+                } else {
+                    $this->assertEquals('Warning: Undefined variable $undefVar', $message);
+                    $this->assertSame(\E_WARNING, $exception->getSeverity());
+                }
                $this->assertInstanceOf(SilencedErrorContext::class, $exception);
-                $this->assertSame(E_NOTICE, $exception->getSeverity());
                $this->assertSame(__FILE__, $exception->getFile());
                $this->assertSame($line, $exception->getLine());
                $this->assertNotEmpty($exception->getTrace());
@@ -262,12 +272,17 @@ class ErrorHandlerTest extends TestCase
            $logger
                ->expects($this->once())
                ->method('log')
-                ->will($this->returnCallback($logArgCheck))
+                ->willReturnCallback($logArgCheck)
            ;

            $handler = ErrorHandler::register();
-            $handler->setDefaultLogger($logger, E_NOTICE);
-            $handler->screamAt(E_NOTICE);
+            if (\PHP_VERSION_ID < 80000) {
+                $handler->setDefaultLogger($logger, \E_NOTICE);
+                $handler->screamAt(\E_NOTICE);
+            } else {
+                $handler->setDefaultLogger($logger, \E_WARNING);
+                $handler->screamAt(\E_WARNING);
+            }
            unset($undefVar);
            $line = __LINE__ + 1;
            @$undefVar++;
@@ -284,6 +299,10 @@ class ErrorHandlerTest extends TestCase

    public function testHandleUserError()
    {
+        if (\PHP_VERSION_ID >= 70400) {
+            $this->markTestSkipped('PHP 7.4 allows __toString to throw exceptions');
+        }
+
        try {
            $handler = ErrorHandler::register();
            $handler->throwAt(0, true);
@@ -318,14 +337,12 @@ class ErrorHandlerTest extends TestCase
        $logger
            ->expects($this->once())
            ->method('log')
-            ->will($this->returnCallback($logArgCheck))
+            ->willReturnCallback($logArgCheck)
        ;

        $handler = new ErrorHandler();
        $handler->setDefaultLogger($logger);
-        @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
-
-        restore_error_handler();
+        @$handler->handleError(\E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
    }

    /**
@@ -334,12 +351,11 @@ class ErrorHandlerTest extends TestCase
    public function testHandleException()
    {
        try {
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
            $handler = ErrorHandler::register();

            $exception = new \Exception('foo');

-            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
-
            $logArgCheck = function ($level, $message, $context) {
                $this->assertSame('Uncaught Exception: foo', $message);
                $this->assertArrayHasKey('exception', $context);
@@ -349,10 +365,10 @@ class ErrorHandlerTest extends TestCase
            $logger
                ->expects($this->exactly(2))
                ->method('log')
-                ->will($this->returnCallback($logArgCheck))
+                ->willReturnCallback($logArgCheck)
            ;

-            $handler->setDefaultLogger($logger, E_ERROR);
+            $handler->setDefaultLogger($logger, \E_ERROR);

            try {
                $handler->handleException($exception);
@@ -379,7 +395,7 @@ class ErrorHandlerTest extends TestCase
    {
        try {
            $handler = ErrorHandler::register();
-            $handler->screamAt(E_USER_WARNING);
+            $handler->screamAt(\E_USER_WARNING);

            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();

@@ -392,10 +408,10 @@ class ErrorHandlerTest extends TestCase
                )
            ;

-            $handler->setDefaultLogger($logger, [E_USER_WARNING => LogLevel::WARNING]);
+            $handler->setDefaultLogger($logger, [\E_USER_WARNING => LogLevel::WARNING]);

            ErrorHandler::stackErrors();
-            @trigger_error('Silenced warning', E_USER_WARNING);
+            @trigger_error('Silenced warning', \E_USER_WARNING);
            $logger->log(LogLevel::WARNING, 'Dummy log');
            ErrorHandler::unstackErrors();
        } finally {
@@ -410,26 +426,26 @@ class ErrorHandlerTest extends TestCase
        $handler = new ErrorHandler($bootLogger);

        $loggers = [
-            E_DEPRECATED => [$bootLogger, LogLevel::INFO],
-            E_USER_DEPRECATED => [$bootLogger, LogLevel::INFO],
-            E_NOTICE => [$bootLogger, LogLevel::WARNING],
-            E_USER_NOTICE => [$bootLogger, LogLevel::WARNING],
-            E_STRICT => [$bootLogger, LogLevel::WARNING],
-            E_WARNING => [$bootLogger, LogLevel::WARNING],
-            E_USER_WARNING => [$bootLogger, LogLevel::WARNING],
-            E_COMPILE_WARNING => [$bootLogger, LogLevel::WARNING],
-            E_CORE_WARNING => [$bootLogger, LogLevel::WARNING],
-            E_USER_ERROR => [$bootLogger, LogLevel::CRITICAL],
-            E_RECOVERABLE_ERROR => [$bootLogger, LogLevel::CRITICAL],
-            E_COMPILE_ERROR => [$bootLogger, LogLevel::CRITICAL],
-            E_PARSE => [$bootLogger, LogLevel::CRITICAL],
-            E_ERROR => [$bootLogger, LogLevel::CRITICAL],
-            E_CORE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            \E_DEPRECATED => [$bootLogger, LogLevel::INFO],
+            \E_USER_DEPRECATED => [$bootLogger, LogLevel::INFO],
+            \E_NOTICE => [$bootLogger, LogLevel::WARNING],
+            \E_USER_NOTICE => [$bootLogger, LogLevel::WARNING],
+            \E_STRICT => [$bootLogger, LogLevel::WARNING],
+            \E_WARNING => [$bootLogger, LogLevel::WARNING],
+            \E_USER_WARNING => [$bootLogger, LogLevel::WARNING],
+            \E_COMPILE_WARNING => [$bootLogger, LogLevel::WARNING],
+            \E_CORE_WARNING => [$bootLogger, LogLevel::WARNING],
+            \E_USER_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            \E_RECOVERABLE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            \E_COMPILE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            \E_PARSE => [$bootLogger, LogLevel::CRITICAL],
+            \E_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            \E_CORE_ERROR => [$bootLogger, LogLevel::CRITICAL],
        ];

        $this->assertSame($loggers, $handler->setLoggers([]));

-        $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, []);
+        $handler->handleError(\E_DEPRECATED, 'Foo message', __FILE__, 123, []);

        $logs = $bootLogger->cleanLogs();

@@ -443,7 +459,7 @@ class ErrorHandlerTest extends TestCase
        $this->assertSame('Deprecated: Foo message', $exception->getMessage());
        $this->assertSame(__FILE__, $exception->getFile());
        $this->assertSame(123, $exception->getLine());
-        $this->assertSame(E_DEPRECATED, $exception->getSeverity());
+        $this->assertSame(\E_DEPRECATED, $exception->getSeverity());

        $bootLogger->log(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);

@@ -452,7 +468,7 @@ class ErrorHandlerTest extends TestCase
            ->method('log')
            ->with(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);

-        $handler->setLoggers([E_DEPRECATED => [$mockLogger, LogLevel::WARNING]]);
+        $handler->setLoggers([\E_DEPRECATED => [$mockLogger, LogLevel::WARNING]]);
    }

    /**
@@ -483,17 +499,16 @@ class ErrorHandlerTest extends TestCase
    public function testHandleFatalError()
    {
        try {
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
            $handler = ErrorHandler::register();

            $error = [
-                'type' => E_PARSE,
+                'type' => \E_PARSE,
                'message' => 'foo',
                'file' => 'bar',
                'line' => 123,
            ];

-            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
-
            $logArgCheck = function ($level, $message, $context) {
                $this->assertEquals('Fatal Parse Error: foo', $message);
                $this->assertArrayHasKey('exception', $context);
@@ -503,10 +518,10 @@ class ErrorHandlerTest extends TestCase
            $logger
                ->expects($this->once())
                ->method('log')
-                ->will($this->returnCallback($logArgCheck))
+                ->willReturnCallback($logArgCheck)
            ;

-            $handler->setDefaultLogger($logger, E_PARSE);
+            $handler->setDefaultLogger($logger, \E_PARSE);

            $handler->handleFatalError($error);

@@ -543,6 +558,10 @@ class ErrorHandlerTest extends TestCase
     */
    public function testHandleFatalErrorOnHHVM()
    {
+        if (!\defined('HHVM_VERSION')) {
+            $this->markTestSkipped('This test requires HHVM.');
+        }
+
        try {
            $handler = ErrorHandler::register();

@@ -556,10 +575,10 @@ class ErrorHandlerTest extends TestCase
                )
            ;

-            $handler->setDefaultLogger($logger, E_ERROR);
+            $handler->setDefaultLogger($logger, \E_ERROR);

            $error = [
-                'type' => E_ERROR + 0x1000000, // This error level is used by HHVM for fatal errors
+                'type' => \E_ERROR + 0x1000000, // This error level is used by HHVM for fatal errors
                'message' => 'foo',
                'file' => 'bar',
                'line' => 123,
@@ -576,11 +595,11 @@ class ErrorHandlerTest extends TestCase
    }

    /**
-     * @expectedException \Exception
     * @group no-hhvm
     */
    public function testCustomExceptionHandler()
    {
+        $this->expectException('Exception');
        $handler = new ErrorHandler();
        $handler->setExceptionHandler(function ($e) use ($handler) {
            $handler->handleException($e);
@@ -608,8 +627,8 @@ class ErrorHandlerTest extends TestCase
                $handler = ErrorHandlerThatUsesThePreviousOne::register();
            }

-            @trigger_error('foo', E_USER_DEPRECATED);
-            @trigger_error('bar', E_USER_DEPRECATED);
+            @trigger_error('foo', \E_USER_DEPRECATED);
+            @trigger_error('bar', \E_USER_DEPRECATED);

            $this->assertSame([$handler, 'handleError'], set_error_handler('var_dump'));

--- a/Tests/Exception/FlattenExceptionTest.php
+++ b/Tests/Exception/FlattenExceptionTest.php
@@ -147,9 +147,9 @@ class FlattenExceptionTest extends TestCase

        $flattened = FlattenException::create($exception)->getPrevious();

-        $this->assertEquals($flattened->getMessage(), 'Parse error: Oh noes!', 'The message is copied from the original exception.');
-        $this->assertEquals($flattened->getCode(), 42, 'The code is copied from the original exception.');
-        $this->assertEquals($flattened->getClass(), 'Symfony\Component\Debug\Exception\FatalThrowableError', 'The class is set to the class of the original exception');
+        $this->assertEquals('Parse error: Oh noes!', $flattened->getMessage(), 'The message is copied from the original exception.');
+        $this->assertEquals(42, $flattened->getCode(), 'The code is copied from the original exception.');
+        $this->assertEquals('Symfony\Component\Debug\Exception\FatalThrowableError', $flattened->getClass(), 'The class is set to the class of the original exception');
    }

    /**
@@ -199,6 +199,10 @@ class FlattenExceptionTest extends TestCase

    public function testArguments()
    {
+        if (\PHP_VERSION_ID >= 70400) {
+            $this->markTestSkipped('PHP 7.4 removes arguments from exception traces.');
+        }
+
        $dh = opendir(__DIR__);
        $fh = tmpfile();

@@ -220,8 +224,8 @@ class FlattenExceptionTest extends TestCase
            0.0,
            '0',
            '',
-            INF,
-            NAN,
+            \INF,
+            \NAN,
        ]);

        $flattened = FlattenException::create($exception);
@@ -252,26 +256,34 @@ class FlattenExceptionTest extends TestCase
        $this->assertSame(['float', 0.0], $array[$i++]);
        $this->assertSame(['string', '0'], $array[$i++]);
        $this->assertSame(['string', ''], $array[$i++]);
-        $this->assertSame(['float', INF], $array[$i++]);
+        $this->assertSame(['float', \INF], $array[$i++]);

        // assertEquals() does not like NAN values.
-        $this->assertEquals($array[$i][0], 'float');
-        $this->assertTrue(is_nan($array[$i++][1]));
+        $this->assertEquals('float', $array[$i][0]);
+        $this->assertNan($array[$i][1]);
    }

    public function testRecursionInArguments()
    {
+        if (\PHP_VERSION_ID >= 70400) {
+            $this->markTestSkipped('PHP 7.4 removes arguments from exception traces.');
+        }
+
        $a = null;
        $a = ['foo', [2, &$a]];
        $exception = $this->createException($a);

        $flattened = FlattenException::create($exception);
        $trace = $flattened->getTrace();
-        $this->assertContains('*DEEP NESTED ARRAY*', serialize($trace));
+        $this->assertStringContainsString('*DEEP NESTED ARRAY*', serialize($trace));
    }

    public function testTooBigArray()
    {
+        if (\PHP_VERSION_ID >= 70400) {
+            $this->markTestSkipped('PHP 7.4 removes arguments from exception traces.');
+        }
+
        $a = [];
        for ($i = 0; $i < 20; ++$i) {
            for ($j = 0; $j < 50; ++$j) {
@@ -291,8 +303,8 @@ class FlattenExceptionTest extends TestCase

        $serializeTrace = serialize($trace);

-        $this->assertContains('*SKIPPED over 10000 entries*', $serializeTrace);
-        $this->assertNotContains('*value1*', $serializeTrace);
+        $this->assertStringContainsString('*SKIPPED over 10000 entries*', $serializeTrace);
+        $this->assertStringNotContainsString('*value1*', $serializeTrace);
    }

    private function createException($foo)
--- a/Tests/ExceptionHandlerTest.php
+++ b/Tests/ExceptionHandlerTest.php
@@ -39,8 +39,8 @@ class ExceptionHandlerTest extends TestCase
        $handler->sendPhpResponse(new \RuntimeException('Foo'));
        $response = ob_get_clean();

-        $this->assertContains('Whoops, looks like something went wrong.', $response);
-        $this->assertNotContains('<div class="trace trace-as-html">', $response);
+        $this->assertStringContainsString('Whoops, looks like something went wrong.', $response);
+        $this->assertStringNotContainsString('<div class="trace trace-as-html">', $response);

        $handler = new ExceptionHandler(true);

@@ -48,8 +48,8 @@ class ExceptionHandlerTest extends TestCase
        $handler->sendPhpResponse(new \RuntimeException('Foo'));
        $response = ob_get_clean();

-        $this->assertContains('Whoops, looks like something went wrong.', $response);
-        $this->assertContains('<div class="trace trace-as-html">', $response);
+        $this->assertStringContainsString('Whoops, looks like something went wrong.', $response);
+        $this->assertStringContainsString('<div class="trace trace-as-html">', $response);
    }

    public function testStatusCode()
@@ -60,7 +60,7 @@ class ExceptionHandlerTest extends TestCase
        $handler->sendPhpResponse(new NotFoundHttpException('Foo'));
        $response = ob_get_clean();

-        $this->assertContains('Sorry, the page you are looking for could not be found.', $response);
+        $this->assertStringContainsString('Sorry, the page you are looking for could not be found.', $response);

        $expectedHeaders = [
            ['HTTP/1.0 404', true, null],
@@ -76,7 +76,7 @@ class ExceptionHandlerTest extends TestCase

        ob_start();
        $handler->sendPhpResponse(new MethodNotAllowedHttpException(['POST']));
-        $response = ob_get_clean();
+        ob_get_clean();

        $expectedHeaders = [
            ['HTTP/1.0 405', true, null],
@@ -99,35 +99,65 @@ class ExceptionHandlerTest extends TestCase

    public function testHandle()
    {
-        $exception = new \Exception('foo');
+        $handler = new ExceptionHandler(true);
+        ob_start();

-        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(['sendPhpResponse'])->getMock();
-        $handler
-            ->expects($this->exactly(2))
-            ->method('sendPhpResponse');
+        $handler->handle(new \Exception('foo'));

-        $handler->handle($exception);
+        $this->assertThatTheExceptionWasOutput(ob_get_clean(), \Exception::class, 'Exception', 'foo');
+    }

-        $handler->setHandler(function ($e) use ($exception) {
-            $this->assertSame($exception, $e);
+    public function testHandleWithACustomHandlerThatOutputsSomething()
+    {
+        $handler = new ExceptionHandler(true);
+        ob_start();
+        $handler->setHandler(function () {
+            echo 'ccc';
        });

-        $handler->handle($exception);
+        $handler->handle(new \Exception());
+        ob_end_flush(); // Necessary because of this PHP bug : https://bugs.php.net/76563
+        $this->assertSame('ccc', ob_get_clean());
+    }
+
+    public function testHandleWithACustomHandlerThatOutputsNothing()
+    {
+        $handler = new ExceptionHandler(true);
+        $handler->setHandler(function () {});
+
+        $handler->handle(new \Exception('ccc'));
+
+        $this->assertThatTheExceptionWasOutput(ob_get_clean(), \Exception::class, 'Exception', 'ccc');
+    }
+
+    public function testHandleWithACustomHandlerThatFails()
+    {
+        $handler = new ExceptionHandler(true);
+        $handler->setHandler(function () {
+            throw new \RuntimeException();
+        });
+
+        $handler->handle(new \Exception('ccc'));
+
+        $this->assertThatTheExceptionWasOutput(ob_get_clean(), \Exception::class, 'Exception', 'ccc');
    }

    public function testHandleOutOfMemoryException()
    {
-        $exception = new OutOfMemoryException('foo', 0, E_ERROR, __FILE__, __LINE__);
-
-        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(['sendPhpResponse'])->getMock();
-        $handler
-            ->expects($this->once())
-            ->method('sendPhpResponse');
-
-        $handler->setHandler(function ($e) {
+        $handler = new ExceptionHandler(true);
+        ob_start();
+        $handler->setHandler(function () {
            $this->fail('OutOfMemoryException should bypass the handler');
        });

-        $handler->handle($exception);
+        $handler->handle(new OutOfMemoryException('foo', 0, \E_ERROR, __FILE__, __LINE__));
+
+        $this->assertThatTheExceptionWasOutput(ob_get_clean(), OutOfMemoryException::class, 'OutOfMemoryException', 'foo');
+    }
+
+    private function assertThatTheExceptionWasOutput($content, $expectedClass, $expectedTitle, $expectedMessage)
+    {
+        $this->assertStringContainsString(sprintf('<span class="exception_title"><abbr title="%s">%s</abbr></span>', $expectedClass, $expectedTitle), $content);
+        $this->assertStringContainsString(sprintf('<p class="break-long-words trace-message">%s</p>', $expectedMessage), $content);
    }
 }
--- a/Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php
+++ b/Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php
@@ -29,6 +29,10 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
            // get class loaders wrapped by DebugClassLoader
            if ($function[0] instanceof DebugClassLoader) {
                $function = $function[0]->getClassLoader();
+
+                if (!\is_array($function)) {
+                    continue;
+                }
            }

            if ($function[0] instanceof ComposerClassLoader) {
@@ -61,7 +65,7 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
        }

        $this->assertInstanceOf('Symfony\Component\Debug\Exception\ClassNotFoundException', $exception);
-        $this->assertSame($translatedMessage, $exception->getMessage());
+        $this->assertMatchesRegularExpression($translatedMessage, $exception->getMessage());
        $this->assertSame($error['type'], $exception->getSeverity());
        $this->assertSame($error['file'], $exception->getFile());
        $this->assertSame($error['line'], $exception->getLine());
@@ -71,10 +75,20 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
    {
        $autoloader = new ComposerClassLoader();
        $autoloader->add('Symfony\Component\Debug\Exception\\', realpath(__DIR__.'/../../Exception'));
+        $autoloader->add('Symfony_Component_Debug_Tests_Fixtures', realpath(__DIR__.'/../../Tests/Fixtures'));

        $debugClassLoader = new DebugClassLoader([$autoloader, 'loadClass']);

        return [
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class "WhizBangFactory" not found',
+                ],
+                "/^Attempted to load class \"WhizBangFactory\" from the global namespace.\nDid you forget a \"use\" statement\?$/",
+            ],
            [
                [
                    'type' => 1,
@@ -82,7 +96,7 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
                    'file' => 'foo.php',
                    'message' => 'Class \'WhizBangFactory\' not found',
                ],
-                "Attempted to load class \"WhizBangFactory\" from the global namespace.\nDid you forget a \"use\" statement?",
+                "/^Attempted to load class \"WhizBangFactory\" from the global namespace.\nDid you forget a \"use\" statement\?$/",
            ],
            [
                [
@@ -91,7 +105,34 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
                    'file' => 'foo.php',
                    'message' => 'Class \'Foo\\Bar\\WhizBangFactory\' not found',
                ],
-                "Attempted to load class \"WhizBangFactory\" from namespace \"Foo\\Bar\".\nDid you forget a \"use\" statement for another namespace?",
+                "/^Attempted to load class \"WhizBangFactory\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for another namespace\?$/",
+            ],
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class "Foo\\Bar\\WhizBangFactory" not found',
+                ],
+                "/^Attempted to load class \"WhizBangFactory\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for another namespace\?$/",
+            ],
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Interface "Foo\\Bar\\WhizBangInterface" not found',
+                ],
+                "/^Attempted to load interface \"WhizBangInterface\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for another namespace\?$/",
+            ],
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Trait "Foo\\Bar\\WhizBangTrait" not found',
+                ],
+                "/^Attempted to load trait \"WhizBangTrait\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for another namespace\?$/",
            ],
            [
                [
@@ -100,7 +141,8 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
                    'file' => 'foo.php',
                    'message' => 'Class \'UndefinedFunctionException\' not found',
                ],
-                "Attempted to load class \"UndefinedFunctionException\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
+                "/^Attempted to load class \"UndefinedFunctionException\" from the global namespace.\nDid you forget a \"use\" statement for .*\"Symfony\\\\Component\\\\Debug\\\\Exception\\\\UndefinedFunctionException\"\?$/",
+                [$debugClassLoader, 'loadClass'],
            ],
            [
                [
@@ -109,35 +151,7 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
                    'file' => 'foo.php',
                    'message' => 'Class \'PEARClass\' not found',
                ],
-                "Attempted to load class \"PEARClass\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony_Component_Debug_Tests_Fixtures_PEARClass\"?",
-            ],
-            [
-                [
-                    'type' => 1,
-                    'line' => 12,
-                    'file' => 'foo.php',
-                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ],
-                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
-            ],
-            [
-                [
-                    'type' => 1,
-                    'line' => 12,
-                    'file' => 'foo.php',
-                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ],
-                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
-                [$autoloader, 'loadClass'],
-            ],
-            [
-                [
-                    'type' => 1,
-                    'line' => 12,
-                    'file' => 'foo.php',
-                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ],
-                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
+                "/^Attempted to load class \"PEARClass\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony_Component_Debug_Tests_Fixtures_PEARClass\"\?$/",
                [$debugClassLoader, 'loadClass'],
            ],
            [
@@ -147,7 +161,37 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
                    'file' => 'foo.php',
                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
                ],
-                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\Bar\".\nDid you forget a \"use\" statement for another namespace?",
+                "/^Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for .*\"Symfony\\\\Component\\\\Debug\\\\Exception\\\\UndefinedFunctionException\"\?$/",
+                [$debugClassLoader, 'loadClass'],
+            ],
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
+                ],
+                "/^Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for \"Symfony\\\\Component\\\\Debug\\\\Exception\\\\UndefinedFunctionException\"\?$/",
+                [$autoloader, 'loadClass'],
+            ],
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
+                ],
+                "/^Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for \"Symfony\\\\Component\\\\Debug\\\\Exception\\\\UndefinedFunctionException\"\?/",
+                [$debugClassLoader, 'loadClass'],
+            ],
+            [
+                [
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
+                ],
+                "/^Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\\\Bar\".\nDid you forget a \"use\" statement for another namespace\?$/",
                function ($className) { /* do nothing here */ },
            ],
        ];
--- a/Tests/Fixtures/ErrorHandlerThatUsesThePreviousOne.php
+++ b/Tests/Fixtures/ErrorHandlerThatUsesThePreviousOne.php
@@ -15,8 +15,8 @@ class ErrorHandlerThatUsesThePreviousOne
        return $handler;
    }

-    public function handleError($type, $message, $file, $line, $context)
+    public function handleError()
    {
-        return \call_user_func(self::$previous, $type, $message, $file, $line, $context);
+        return \call_user_func_array(self::$previous, \func_get_args());
    }
 }
--- a/Tests/MockExceptionHandler.php
+++ b/Tests/MockExceptionHandler.php
@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Debug\Tests;
-
-use Symfony\Component\Debug\ExceptionHandler;
-
-class MockExceptionHandler extends ExceptionHandler
-{
-    public $e;
-
-    public function handle(\Exception $e)
-    {
-        $this->e = $e;
-    }
-}
Author	SHA1	Message	Date
Alexander M. Turek	9109e4414e	[Debug] Skip a test that was meant for HHVM.	2020-09-09 00:19:14 +02:00
Alexander M. Turek	5422b88cf9	[Debug] Parse "x not found" errors correctly on php 8.	2020-09-04 00:12:04 +02:00
Nicolas Grekas	093e4e512f	Enable "native_constant_invocation" CS rule	2020-09-02 18:06:40 +02:00
Alexander M. Turek	0893a0b07c	Modernized deprecated PHPUnit assertion calls	2020-08-09 10:13:48 +02:00
Thomas Calvet	7ce874f443	[SCA] Minor fixes on tests	2020-07-16 11:41:49 +02:00
Nicolas Grekas	f34d2bf035	[ErrorHandler] fix throwing from __toString()	2020-06-30 19:28:29 +02:00
Nicolas Grekas	518c6a00d0	minor #36898 [Debug] php 8 does not pass $context to error handlers (derrabus) This PR was merged into the 3.4 branch. Discussion ---------- [Debug] php 8 does not pass $context to error handlers \| Q \| A \| ------------- \| --- \| Branch? \| 3.4 \| Bug fix? \| yes \| New feature? \| no \| Deprecations? \| no \| Tickets \| #36872 \| License \| MIT \| Doc PR \| N/A php 8 will call error handlers without the optional `$context` parameter. Thus, error handlers that make that parameter mandatory will break. Commits ------- 593897c9e1 [Debug] php 8 does not pass $context to error handlers.	2020-05-22 20:25:20 +02:00
Alexander M. Turek	2560754c36	[Debug] php 8 does not pass $context to error handlers.	2020-05-22 13:12:29 +02:00
Alexander M. Turek	44897cd605	[Debug] Undefined variables raise a warning in php 8.	2020-05-22 12:23:23 +02:00
Alexander M. Turek	7e9cd457b4	[Debug] Skip test that would trigger a fatal error on php 8.	2020-05-21 16:02:48 +02:00
Nicolas Grekas	ce9f3b5e8e	[Debug] fix for PHP 7.3.16+/7.4.4+	2020-03-23 11:22:40 +01:00
Fabien Potencier	ed3231ef38	Add missing dots at the end of exception messages	2020-03-15 10:38:08 +01:00
Wouter de Jong	a99278d50a	[Translation][Debug] Add installation and minimal example to README	2020-02-03 16:10:40 +01:00
Nicolas Grekas	70dd18e93b	[Debug] fix ClassNotFoundFatalErrorHandler	2020-01-08 17:36:15 +01:00
Shaharia Azam	9a81b6360b	Update links to documentation	2020-01-04 13:05:51 +01:00
Jan Rosier	cbe127b719	Update year in license files	2020-01-01 12:03:25 +01:00
Artem Henvald	9d32af2d83	Use `::class` constants instead of `__NAMESPACE__` when possible	2019-12-16 11:25:54 +01:00
Thomas Calvet	f72e33fdb1	Remove unused local variables in tests	2019-10-24 17:33:53 +02:00
Nicolas Grekas	b3e7ce815d	Re-enable previously failing PHP 7.4 test cases	2019-09-19 17:32:51 +02:00
Alexander M. Turek	0b60030091	Fix inconsistent return points.	2019-08-20 15:31:17 +02:00
Nicolas Grekas	2ab93347e8	Fix return statements	2019-08-13 08:33:05 +02:00
Nicolas Grekas	4645282605	minor #32800 Improve some URLs (Arman-Hosseini) This PR was squashed before being merged into the 3.4 branch (closes #32800). Discussion ---------- Improve some URLs \| Q \| A \| ------------- \| --- \| Branch? \| 3.4 <!-- see below --> \| Bug fix? \| no \| New feature? \| no <!-- please update src/*/CHANGELOG.md files --> \| BC breaks? \| no <!-- see https://symfony.com/bc --> \| Deprecations? \| no <!-- please update UPGRADE-.md and src/**/CHANGELOG.md files --> \| Tests pass? \| yes <!-- please add some, will be required by reviewers --> \| Fixed tickets \| N/A <!-- #-prefixed issue number(s), if any --> \| License \| MIT \| Doc PR \| N/A <!-- required for new features --> <!-- Replace this notice by a short README for your feature/bugfix. This will help people understand your PR and can be used as a start for the documentation. Additionally (see https://symfony.com/roadmap): - Bug fixes must be submitted against the lowest maintained branch where they apply (lowest branches are regularly merged to upper ones so they get the fixes too). - Features and deprecations must be submitted against branch 4.4. - Legacy code removals go to the master branch. --> Commits ------- fab17a4487 Improve some URLs	2019-08-08 17:01:55 +02:00
Arman Hosseini	93fd0e9f20	Improve some URLs	2019-08-08 17:01:12 +02:00
Jérémy Derussé	c5366e87da	Fix remaining tests	2019-08-06 15:24:37 +02:00
Jérémy Derussé	a78bf4dc3a	Use assertStringContainsString when needed	2019-08-06 08:15:37 +02:00
Jérémy Derussé	4dc880d082	Remove use of ForwardCompatTrait	2019-08-03 23:15:25 +02:00
Nicolas Grekas	63f26f1891	Adopt `@PHPUnit55Migration:risky` rule of php-cs-fixer	2019-08-03 15:46:27 +02:00
Jérémy Derussé	bef2cd01a1	Fix deprecated phpunit annotation	2019-08-02 00:48:42 +02:00
Nicolas Grekas	22fea487fa	Make tests support phpunit 8	2019-07-31 23:55:24 +02:00
Tobias Weichart	89429ed0eb	minor fix for wrong case	2019-07-31 08:13:25 +01:00
Nicolas Grekas	bc977cb268	minor #32619 [Debug][ExceptionHandler] Add tests for custom handlers (fancyweb) This PR was merged into the 3.4 branch. Discussion ---------- [Debug][ExceptionHandler] Add tests for custom handlers \| Q \| A \| ------------- \| --- \| Branch? \| 3.4 \| Bug fix? \| no \| New feature? \| no \| BC breaks? \| no \| Deprecations? \| no \| Tests pass? \| yes \| Fixed tickets \| - \| License \| MIT \| Doc PR \| - In https://github.com/symfony/symfony/pull/31694 I mixed many things but the whole PR was closed. I wrote some tests for custom handlers + the handle tests don't use mock anymore I think they are useful even if the `ExceptionHandler` will disappear in the new component because it will still exists in 4.4 for the next 3 years. Commits ------- c53e25332a [Debug][ExceptionHandler] Add tests for custom handlers	2019-07-23 10:39:19 +02:00
Nicolas Grekas	dabd21d13b	minor #32623 Remove dead tests fixtures (fancyweb) This PR was merged into the 3.4 branch. Discussion ---------- Remove dead tests fixtures \| Q \| A \| ------------- \| --- \| Branch? \| 3.4 \| Bug fix? \| no \| New feature? \| no \| BC breaks? \| no \| Deprecations? \| no \| Tests pass? \| yes \| Fixed tickets \| - \| License \| MIT \| Doc PR \| - Once this is merged up to 4.2, I will check 4.2. Commits ------- f7e24c2c80 Remove dead tests fixtures	2019-07-19 14:05:10 +02:00
Thomas Calvet	b6f28caaf2	Remove dead tests fixtures	2019-07-19 13:52:08 +02:00
Thomas Calvet	5bf4824968	[Debug][ExceptionHandler] Add tests for custom handlers	2019-07-19 10:43:44 +02:00
Nicolas Grekas	dff676526c	minor #32612 [Debug] Fix 3.4 tests (yceruto) This PR was merged into the 3.4 branch. Discussion ---------- [Debug] Fix 3.4 tests \| Q \| A \| ------------- \| --- \| Branch? \| 3.4 \| Bug fix? \| yes \| New feature? \| no \| BC breaks? \| no \| Deprecations? \| no \| Tests pass? \| yes \| Fixed tickets \| - \| License \| MIT Commits ------- 77fa283091 Fix Debug component tests	2019-07-19 10:32:24 +02:00
Yonel Ceruto	b49ea98332	Fix Debug component tests	2019-07-18 18:35:50 -04:00
Grégoire Paris	a808f15333	Use mocks before replacing the error handler We want the bridge to mute the deprecations triggered when building mocks.	2019-07-18 08:26:12 +02:00
Thomas Calvet	32d260af46	[Debug][DebugClassLoader] Don't check class if the included file don't exist	2019-07-12 10:40:08 +02:00
Thomas Calvet	740602e8b0	[Debug][DebugClassLoader] Include found files instead of requiring them	2019-07-11 20:09:53 +02:00
Christian Flothmann	d58c0d65d7	fix Debug component dependencies	2019-06-28 11:18:39 +02:00
Nicolas Grekas	1172dc1abe	[Debug] workaround BC break in PHP 7.3	2019-06-18 23:26:03 +02:00
Fabien Potencier	7e1a4ec082	fixed CS	2019-06-13 12:34:15 +02:00
Alexander M. Turek	e79bbe15d8	Use willReturn() instead of will(returnValue()).	2019-05-30 17:47:52 +02:00
Grégoire Pineau	671fc55bd1	[Debug] Wrap call to require_once in a try/catch If the included file contains an error, it hides the real error. This makes debugging harder. How to reproduce: ``` composer create-project symfony/skeleton symfony-3.4 3.4 cd symfony-3.4 composer req monolog ``` Add to `monolog.yaml`: ```yaml elasticsearch: type: "elasticsearch" elasticsearch: host: 'elasticsearch' port: '9200' index: 'ep_php_logs_dev' level: 'debug' tags: 'monolog.logger' channels: ['!event'] ``` This will fail because the the \Elastica\Client class does not exist. But this error will be hidden by the `ClassNotFoundFatalErrorHandler` because it will try to load the `Symfony\Component\Kernel\Client` and this class extends `Symfony\Component\BrowserKit\Client`. The last one is a soft dependency... --- Before ``` Fatal error: Uncaught Error: Class 'Symfony\Component\BrowserKit\Client' not found in /tmp/symfony-3.4/vendor/symfony/http-kernel/Client.php:31 ``` After: ``` Fatal error: Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "Client" from namespace "Elastica". Did you forget a "use" statement for another namespace? in /tmp/symfony-es/var/cache/dev/ContainerWXN4mS9/srcApp_KernelDevDebugContainer.php:303 ```	2019-05-18 15:32:47 +02:00