Add some tests for VideoFileClip (Zulko#453)

tests/test_VideoFileClip.py

@@ -0,0 +1,22 @@
+import pytest
+from moviepy.editor import *
+import os
+
+def test_setup():
+    _red = ColorClip((1024,800), col=(255,0,0))
+    _green = ColorClip((1024,800), col=(0,255,0))
+    _blue = ColorClip((1024,800), col=(0,0,255))
+
+    _red.fps=_green.fps=_blue.fps=30
+    _video = clips_array([[_red, _green, _blue]]).set_duration(5)
+    _video.write_videofile("/tmp/test.mp4")
+
+    assert os.path.exists("/tmp/test.mp4")
+
+    _clip = VideoFileClip("/tmp/test.mp4")
+    assert _clip.duration == 5
+    assert _clip.fps == 30
+    assert _clip.size == [1024*3, 800]
+
+if __name__ == '__main__':
+   pytest.main()