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TST: Add test for _repr_html_ #18501

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Merged
merged 4 commits into from
Sep 22, 2020
Merged

TST: Add test for _repr_html_ #18501

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9cee283
TST: Add test for _repr_html_
larsoner Sep 16, 2020
db52d85
MAINT: Unify
larsoner Sep 17, 2020
c3c32c8
STY: Rename fixture->klass
larsoner Sep 20, 2020
b4fd83c
STY: Move
larsoner Sep 22, 2020
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66 changes: 49 additions & 17 deletions lib/matplotlib/tests/test_animation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
import pytest

import matplotlib as mpl
from matplotlib import pyplot as plt
from matplotlib import pyplot as plt, rc_context
from matplotlib import animation


Expand Down Expand Up @@ -136,27 +136,14 @@ def isAvailable(cls):
(writer, Path(output)) for writer, output in WRITER_OUTPUT]


# Smoke test for saving animations. In the future, we should probably
# design more sophisticated tests which compare resulting frames a-la
# matplotlib.testing.image_comparison
@pytest.mark.parametrize('writer, output', WRITER_OUTPUT)
def test_save_animation_smoketest(tmpdir, writer, output):
if not animation.writers.is_available(writer):
pytest.skip("writer '%s' not available on this system" % writer)
@pytest.fixture()
def simple_animation():
fig, ax = plt.subplots()
line, = ax.plot([], [])

ax.set_xlim(0, 10)
ax.set_ylim(-1, 1)

dpi = None
codec = None
if writer == 'ffmpeg':
# Issue #8253
fig.set_size_inches((10.85, 9.21))
dpi = 100.
codec = 'h264'

def init():
line.set_data([], [])
return line,
Expand All @@ -167,14 +154,59 @@ def animate(i):
line.set_data(x, y)
return line,

return dict(fig=fig, func=animate, init_func=init, frames=5)


# Smoke test for saving animations. In the future, we should probably
# design more sophisticated tests which compare resulting frames a-la
# matplotlib.testing.image_comparison
@pytest.mark.parametrize('writer, output', WRITER_OUTPUT)
def test_save_animation_smoketest(tmpdir, writer, output, simple_animation):
if not animation.writers.is_available(writer):
pytest.skip("writer '%s' not available on this system" % writer)

dpi = None
codec = None
if writer == 'ffmpeg':
# Issue #8253
simple_animation['fig'].set_size_inches((10.85, 9.21))
dpi = 100.
codec = 'h264'

# Use temporary directory for the file-based writers, which produce a file
# per frame with known names.
with tmpdir.as_cwd():
anim = animation.FuncAnimation(fig, animate, init_func=init, frames=5)
anim = animation.FuncAnimation(**simple_animation)
anim.save(output, fps=30, writer=writer, bitrate=500, dpi=dpi,
codec=codec)


@pytest.mark.parametrize('writer', [
pytest.param('ffmpeg',
marks=pytest.mark.skipif(
not animation.FFMpegWriter.isAvailable(),
reason='Requires FFMpeg')),
pytest.param('imagemagick',
marks=pytest.mark.skipif(
not animation.ImageMagickWriter.isAvailable(),
reason='Requires ImageMagick')),
])
@pytest.mark.parametrize('html, want', [
('none', None),
('html5', '<video width'),
('jshtml', '<script ')
])
def test_animation_repr_html(writer, html, want, simple_animation):
anim = animation.FuncAnimation(**simple_animation)
with plt.rc_context({'animation.writer': writer,
'animation.html': html}):
html = anim._repr_html_()
if want is None:
assert html is None
else:
assert want in html


def test_no_length_frames():
(make_animation(frames=iter(range(5)))
.save('unused.null', writer=NullMovieWriter()))
Expand Down