Add bc layer for older php and phpunit versions

tests/Unit/FFProbe/OptionsTesterTest.php

@@ -2,26 +2,28 @@
 
 namespace Tests\FFMpeg\Unit\FFProbe;
 
-use Alchemy\BinaryDriver\Exception\ExecutionFailureException;
-use FFMpeg\Exception\RuntimeException;
 use Tests\FFMpeg\Unit\TestCase;
 use FFMpeg\FFProbe\OptionsTester;
 
 class OptionsTesterTest extends TestCase
 {
-    /**
-     * @expectedExceptionMessage Your FFProbe version is too old and does not support `-help` option, please upgrade.
-     */
     public function testHasOptionWithOldFFProbe()
     {
-        $this->expectException('\FFMpeg\Exception\RuntimeException');
+        $this->expectException(
+            '\FFMpeg\Exception\RuntimeException',
+            'Your FFProbe version is too old and does not support `-help` option, please upgrade.'
+        );
         $cache = $this->getCacheMock();
 
+        $executionFailerExceptionMock = $this->getMockBuilder('Alchemy\BinaryDriver\Exception\ExecutionFailureException')
+            ->disableOriginalConstructor()
+            ->getMock();
+
         $ffprobe = $this->getFFProbeDriverMock();
         $ffprobe->expects($this->once())
             ->method('command')
             ->with(array('-help', '-loglevel', 'quiet'))
-            ->will($this->throwException(new RuntimeException('Failed to execute')));
+            ->will($this->throwException($executionFailerExceptionMock));
 
         $tester = new OptionsTester($ffprobe, $cache);
         $tester->has('-print_format');