Skip an ImageMagick test if ffmpeg is unavailable.

QuLogic · QuLogic · commit b5fe1d1c516e · 2021-01-21T04:26:18.000-05:00
For certain formats, ImageMagick delegates to ffmpeg.
diff --git a/lib/matplotlib/tests/test_animation.py b/lib/matplotlib/tests/test_animation.py
@@ -201,6 +201,10 @@ def test_save_animation_smoketest(tmpdir, writer, frame_format, output, anim):
 ])
 @pytest.mark.parametrize('anim', [dict(klass=dict)], indirect=['anim'])
 def test_animation_repr_html(writer, html, want, anim):
+    if (writer == 'imagemagick' and html == 'html5'
+            # ImageMagick delegates to ffmpeg for this format.
+            and not animation.FFMpegWriter.isAvailable()):
+        pytest.skip('Requires FFMpeg')
     # create here rather than in the fixture otherwise we get __del__ warnings
     # about producing no output
     anim = animation.FuncAnimation(**anim)
