Added the BC Layer alias for some phpunit methods to fix build at php <= 5.5.

README.md

@@ -532,7 +532,7 @@ ComplexMedia already contains some built-in filters.
 For example:
 
 ```php
-$complexMedia = $ffmpeg->openComplex(array ('video_1.mp4', 'video_2.mp4'));
+$complexMedia = $ffmpeg->openComplex(array('video_1.mp4', 'video_2.mp4'));
 $complexMedia->filters()
     ->custom('[0:v][1:v]', 'hstack', '[v]');
 $complexMedia
@@ -580,7 +580,7 @@ As you can see, you can take multiple input sources, perform the complicated pro
 You do not have to use `-filter_complex`. For example, just extract the audio from the video:
 
 ```php
-$complexMedia = $ffmpeg->openComplex(array ('video.mp4'));
+$complexMedia = $ffmpeg->openComplex(array('video.mp4'));
 $complexMedia
     ->map(array('0:a'), new Mp3(), 'output.mp3')
     ->save();

src/FFMpeg/Filters/ComplexMedia/TestSrcFilter.php

@@ -199,6 +199,31 @@ class TestSrcFilter extends AbstractComplexFilter
         return $this->type;
     }
 
+    /**
+     * Get minimal version of ffmpeg starting with which this filter is supported.
+     *
+     * @return string
+     */
+    public function getMinimalFFMpegVersion()
+    {
+        switch ($this->type) {
+            case self::PAL75BARS:
+            case self::PAL100BARS:
+                return '4.1';
+            case self::YUVTESTSRC:
+                return '3.2';
+            case self::ALLRGB:
+            case self::ALLYUV:
+                return '2.8';
+            case self::SMPTEHDBARS:
+                return '2.0';
+            case self::SMPTEBARS:
+                return '1.0';
+            default:
+                return '0.3';
+        }
+    }
+
     /**
      * {@inheritdoc}
      */

tests/BaseTestCase.php

@@ -8,7 +8,8 @@ use PHPUnit\Framework\TestCase;
  * This is a BC Layer to support phpunit 4.8 needed for php <= 5.5.
  */
 if (class_exists('PHPUnit_Runner_Version')
-    && version_compare(\PHPUnit_Runner_Version::id(), '5', '<')) {
+    && version_compare(\PHPUnit_Runner_Version::id(), '5', '<')
+) {
     class BaseTestCase extends TestCase
     {
         public static function assertScalar($value, $message = '')
@@ -40,6 +41,16 @@ if (class_exists('PHPUnit_Runner_Version')
         {
             $this->setExpectedException($exception, $message);
         }
+
+        public static function assertStringContainsString($needle, $haystack, $message = '')
+        {
+            self::assertContains($needle, $haystack, $message);
+        }
+
+        public static function assertStringNotContainsString($needle, $haystack, $message = '')
+        {
+            self::assertNotContains($needle, $haystack, $message);
+        }
     }
 } else {
     class BaseTestCase extends TestCase