add tests

tests/FFMpeg/Tests/Filters/Video/CropFilterTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace FFMpeg\Tests\Filters\Video;
+
+use FFMpeg\Coordinate\Dimension;
+use FFMpeg\Coordinate\Point;
+use FFMpeg\FFProbe\DataMapping\Stream;
+use FFMpeg\FFProbe\DataMapping\StreamCollection;
+use FFMpeg\Filters\Video\CropFilter;
+use FFMpeg\Tests\TestCase;
+
+class CropFilterTest extends TestCase
+{
+
+    public function testCommandParamsAreCorrectAndStreamIsUpdated()
+    {
+        $stream = new Stream(array('width' => 320, 'height' => 240, 'codec_type' => 'video'));
+        $streams = new StreamCollection(array($stream));
+
+        $video = $this->getVideoMock();
+        $video->expects($this->once())
+            ->method('getStreams')
+            ->will($this->returnValue($streams));
+
+        $format = $this->getMock('FFMpeg\Format\VideoInterface');
+
+        $dimension = new Dimension(200, 150);
+        $point = new Point(25, 35);
+        $filter = new CropFilter($point, $dimension);
+        $expected = array(
+            '-filter:v',
+            'crop=' . $dimension->getWidth() . ":" . $dimension->getHeight() . ":" . $point->getX() . ":" . $point->getY()
+        );
+        $this->assertEquals($expected, $filter->apply($video, $format));
+
+        $this->assertEquals(200, $stream->get('width'));
+        $this->assertEquals(150, $stream->get('height'));
+    }
+
+}