Optimise test suite speed (Zulko#1463)

* Optimise test suite speed

* Apply black

media/subtitles.srt

@@ -1,24 +1,20 @@
 0
-00:00:00,000 --> 00:00:04,000
+00:00:00,000 --> 00:00:01,000
 Red!
 
 1
-00:00:05,000 --> 00:00:09,000
+00:00:02,000 --> 00:00:03,500
 More Red!
 
 2
-00:00:10,000 --> 00:00:14,000
+00:00:5,000 --> 00:00:6,000
 Green!
 
 3
-00:00:15,000 --> 00:00:19,000
-More Green!
-
-4
-00:00:20,000 --> 00:00:24,000
+00:00:7,000 --> 00:00:8,000
 Blue
 
-5
-00:00:25,000 --> 00:00:29,000
+4
+00:00:9,000 --> 00:00:10,000
 More Blue!
 

tests/test_PR.py

@@ -79,7 +79,7 @@ def test_PR_515():
 def test_PR_528():
     with ImageClip("media/vacation_2017.jpg") as clip:
         new_clip = scroll(clip, w=1000, x_speed=50)
-        new_clip = new_clip.with_duration(1)
+        new_clip = new_clip.with_duration(0.2)
         new_clip.fps = 24
         new_clip.write_videofile(os.path.join(TMP_DIR, "pano.mp4"))
 
@@ -105,7 +105,9 @@ def test_PR_1137_video():
     """
     Test support for path-like objects as arguments for VideoFileClip.
     """
-    with VideoFileClip(Path("media/big_buck_bunny_432_433.webm")) as video:
+    with VideoFileClip(Path("media/big_buck_bunny_432_433.webm")).subclip(
+        0.2, 0.4
+    ) as video:
         video.write_videofile(Path(TMP_DIR) / "pathlike.mp4")
         assert isinstance(video.filename, str)
 

tests/test_Videos.py

@@ -17,8 +17,7 @@ def test_afterimage():
     some_background_clip = ColorClip((800, 600), color=(255, 255, 255))
     final_clip = CompositeVideoClip(
         [some_background_clip, masked_clip], use_bgclip=True
-    )
-    final_clip.duration = 5
+    ).with_duration(0.2)
     final_clip.write_videofile(os.path.join(TMP_DIR, "afterimage.mp4"), fps=30)
 
 

tests/test_examples.py

@@ -21,7 +21,7 @@ def test_matplotlib_simple_example():
     plt.switch_backend("agg")
 
     x = np.linspace(-2, 2, 200)
-    duration = 2
+    duration = 0.5
 
     fig, ax = plt.subplots()
 

tests/test_fx.py

@@ -279,16 +279,17 @@ def test_loop():
     target3 = BitmapClip([["R"], ["G"], ["B"], ["R"], ["G"]], fps=1)
     assert clip3 == target3
 
-    clip = get_test_video()
-    clip1 = loop(clip).with_duration(3)  # infinite looping
+    clip = get_test_video().subclip(0.2, 0.3)  # 0.1 seconds long
+    clip1 = loop(clip).with_duration(0.5)  # infinite looping
     clip1.write_videofile(os.path.join(TMP_DIR, "loop1.webm"))
 
-    clip2 = loop(clip, duration=10)  # loop for 10 seconds
+    clip2 = loop(clip, duration=0.5)  # loop for 1 second
     clip2.write_videofile(os.path.join(TMP_DIR, "loop2.webm"))
 
     clip3 = loop(clip, n=3)  # loop 3 times
     clip3.write_videofile(os.path.join(TMP_DIR, "loop3.webm"))
 
+    # Test audio looping
     clip = AudioClip(
         lambda t: np.sin(440 * 2 * np.pi * t) * (t % 1) + 0.5, duration=2.5, fps=44100
     )
@@ -373,7 +374,7 @@ def test_painting():
 
 def test_resize():
     # TODO update to use BitmapClip
-    clip = get_test_video()
+    clip = get_test_video().subclip(0.2, 0.3)
 
     clip1 = resize(clip, (460, 720))  # New resolution: (460,720)
     assert clip1.size == (460, 720)

tests/test_issues.py

@@ -256,7 +256,7 @@ def test_issue_354():
 
 
 def test_issue_359():
-    with ColorClip((800, 600), color=(255, 0, 0)).with_duration(5) as video:
+    with ColorClip((800, 600), color=(255, 0, 0)).with_duration(0.2) as video:
         video.fps = 30
         video.write_gif(filename=os.path.join(TMP_DIR, "issue_359.gif"), tempfiles=True)
 
@@ -301,7 +301,7 @@ def make_frame(t):
 
         return mplfig_to_npimage(fig)
 
-    animation = VideoClip(make_frame, duration=2)
+    animation = VideoClip(make_frame, duration=0.2)
     animation.write_gif(os.path.join(TMP_DIR, "svm.gif"), fps=20)
 
 

tests/test_misc.py

@@ -15,12 +15,11 @@
 
 
 MEDIA_SUBTITLES_DATA = [
-    ([0.0, 4.0], "Red!"),
-    ([5.0, 9.0], "More Red!"),
-    ([10.0, 14.0], "Green!"),
-    ([15.0, 19.0], "More Green!"),
-    ([20.0, 24.0], "Blue"),
-    ([25.0, 29.0], "More Blue!"),
+    ([0.0, 1.0], "Red!"),
+    ([2.0, 3.5], "More Red!"),
+    ([5.0, 6.0], "Green!"),
+    ([7.0, 8.0], "Blue"),
+    ([9.0, 10.0], "More Blue!"),
 ]
 
 MEDIA_SUBTITLES_UNICODE_DATA = [