Commited for Sanjay, reviewed by Pierre. Testfest task 79.

ext/gd/tests/image_type_to_mime_type_variation1.phpt

@@ -0,0 +1,138 @@
+--TEST--
+Test image_type_to_mime_type() function : usage variations  - Pass different data types as imagetype
+--FILE--
+<?php
+/* Prototype  : string image_type_to_mime_type(int imagetype)
+ * Description: Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype 
+ * Source code: ext/standard/image.c
+ */
+
+echo "*** Testing image_type_to_mime_type() : usage variations ***\n";
+
+error_reporting(E_ALL ^ E_NOTICE);
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+class MyClass
+{
+  function __toString() {
+    return "MyClass";
+  }
+}
+
+//array of values to iterate over
+$values = array(
+
+      // float data
+      100.5,
+      -100.5,
+      100.1234567e10,
+      100.7654321E-10,
+      .5,
+
+      // array data
+      array(),
+      array('color' => 'red', 'item' => 'pen'),
+
+      // null data
+      NULL,
+      null,
+
+      // boolean data
+      true,
+      false,
+      TRUE,
+      FALSE,
+
+      // empty data
+      "",
+      '',
+
+      // string data
+      "string",
+      'string',
+
+      // object data
+      new MyClass(),
+
+      // undefined data
+      @$undefined_var,
+
+      // unset data
+      @$unset_var,
+);
+
+// loop through each element of the array for imagetype
+$iterator = 1;
+foreach($values as $value) {
+      echo "\n-- Iteration $iterator --\n";
+      var_dump( image_type_to_mime_type($value) );
+      $iterator++;
+};
+?>
+===DONE===
+--EXPECTF--
+*** Testing image_type_to_mime_type() : usage variations ***
+
+-- Iteration 1 --
+string(24) "application/octet-stream"
+
+-- Iteration 2 --
+string(24) "application/octet-stream"
+
+-- Iteration 3 --
+string(24) "application/octet-stream"
+
+-- Iteration 4 --
+string(24) "application/octet-stream"
+
+-- Iteration 5 --
+string(24) "application/octet-stream"
+
+-- Iteration 6 --
+string(24) "application/octet-stream"
+
+-- Iteration 7 --
+string(9) "image/gif"
+
+-- Iteration 8 --
+string(24) "application/octet-stream"
+
+-- Iteration 9 --
+string(24) "application/octet-stream"
+
+-- Iteration 10 --
+string(9) "image/gif"
+
+-- Iteration 11 --
+string(24) "application/octet-stream"
+
+-- Iteration 12 --
+string(9) "image/gif"
+
+-- Iteration 13 --
+string(24) "application/octet-stream"
+
+-- Iteration 14 --
+string(24) "application/octet-stream"
+
+-- Iteration 15 --
+string(24) "application/octet-stream"
+
+-- Iteration 16 --
+string(24) "application/octet-stream"
+
+-- Iteration 17 --
+string(24) "application/octet-stream"
+
+-- Iteration 18 --
+string(9) "image/gif"
+
+-- Iteration 19 --
+string(24) "application/octet-stream"
+
+-- Iteration 20 --
+string(24) "application/octet-stream"
+===DONE===