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Make image_comparison more pytest-y #8380

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Merged
merged 10 commits into from
Apr 16, 2017
Merged

Make image_comparison more pytest-y #8380

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14b5d17
TST: Use same default style in the pytest fixture.
QuLogic Mar 26, 2017
abc9445
TST: Make image_comparison more pytest-y.
QuLogic Mar 26, 2017
f736296
TST: Allow baseline_images to be a fixture.
QuLogic Mar 26, 2017
3810c2a
TST: Properly parametrize the last mathtext tests.
QuLogic Mar 26, 2017
878dfaa
Restore ImageComparisonTest and its static methods.
QuLogic Mar 30, 2017
fd8e844
Raise consistent shape error out of save_diff_image.
QuLogic Apr 13, 2017
75bebef
Stop handling GeneratorExit in nose image comparison.
QuLogic Apr 13, 2017
ba7106a
Add tests for nose version of image_comparison.
QuLogic Apr 15, 2017
c186408
Handle comments from PR.
QuLogic Apr 15, 2017
d1c1e1b
Fix nose image comparison test on Python 2.
QuLogic Apr 15, 2017
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TST: Properly parametrize the last mathtext tests.
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@QuLogic
QuLogic committed Apr 15, 2017
commit 3810c2a19cbe16ccc0f20a21adf5b350cea58504
58 changes: 31 additions & 27 deletions lib/matplotlib/tests/test_mathtext.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
import matplotlib.pyplot as plt
from matplotlib import mathtext


math_tests = [
r'$a+b+\dot s+\dot{s}+\ldots$',
r'$x \doteq y$',
Expand Down Expand Up @@ -160,36 +161,39 @@
for set in chars:
font_tests.append(wrapper % set)

def make_set(basename, fontset, tests, extensions=None):
def make_test(filename, test):
@image_comparison(baseline_images=[filename], extensions=extensions)
def single_test():
matplotlib.rcParams['mathtext.fontset'] = fontset
fig = plt.figure(figsize=(5.25, 0.75))
fig.text(0.5, 0.5, test, horizontalalignment='center', verticalalignment='center')
func = single_test
func.__name__ = str("test_" + filename)
return func

# We inject test functions into the global namespace, rather than
# using a generator, so that individual tests can be run more
# easily from the commandline and so each test will have its own
# result.
for i, test in enumerate(tests):
filename = '%s_%s_%02d' % (basename, fontset, i)
globals()['test_%s' % filename] = make_test(filename, test)
@pytest.fixture
def baseline_images(request, fontset, index):
return ['%s_%s_%02d' % (request.param, fontset, index)]


@pytest.mark.parametrize('index, test', enumerate(math_tests),
ids=[str(index) for index in range(len(math_tests))])
@pytest.mark.parametrize('fontset',
['cm', 'stix', 'stixsans', 'dejavusans',
'dejavuserif'])
@pytest.mark.parametrize('baseline_images', ['mathtext'], indirect=True)
@image_comparison(baseline_images=None)
def test_mathtext_rendering(baseline_images, fontset, index, test):
matplotlib.rcParams['mathtext.fontset'] = fontset
fig = plt.figure(figsize=(5.25, 0.75))
fig.text(0.5, 0.5, test,
horizontalalignment='center', verticalalignment='center')


make_set('mathtext', 'cm', math_tests)
make_set('mathtext', 'stix', math_tests)
make_set('mathtext', 'stixsans', math_tests)
make_set('mathtext', 'dejavusans', math_tests)
make_set('mathtext', 'dejavuserif', math_tests)
@pytest.mark.parametrize('index, test', enumerate(font_tests),
ids=[str(index) for index in range(len(font_tests))])
@pytest.mark.parametrize('fontset',
['cm', 'stix', 'stixsans', 'dejavusans',
'dejavuserif'])
@pytest.mark.parametrize('baseline_images', ['mathfont'], indirect=True)
@image_comparison(baseline_images=None, extensions=['png'])
def test_mathfont_rendering(baseline_images, fontset, index, test):
matplotlib.rcParams['mathtext.fontset'] = fontset
fig = plt.figure(figsize=(5.25, 0.75))
fig.text(0.5, 0.5, test,
horizontalalignment='center', verticalalignment='center')

make_set('mathfont', 'cm', font_tests, ['png'])
make_set('mathfont', 'stix', font_tests, ['png'])
make_set('mathfont', 'stixsans', font_tests, ['png'])
make_set('mathfont', 'dejavusans', font_tests, ['png'])
make_set('mathfont', 'dejavuserif', font_tests, ['png'])

def test_fontinfo():
import matplotlib.font_manager as font_manager
Expand Down