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Allow image comparison outside tests module #5842

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Merged
merged 2 commits into from
Jan 13, 2016
Merged

Allow image comparison outside tests module #5842

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27cbd34
Expand docstring to explain return value.
maxalbert Jan 13, 2016
90b8f11
Remove assertion so that @image_comparison can be used outside a 'tes…
maxalbert Jan 13, 2016
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12 changes: 10 additions & 2 deletions lib/matplotlib/testing/decorators.py
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Original file line number Diff line number Diff line change
Expand Up @@ -359,12 +359,20 @@ def _image_directories(func):
# namespace package pip installed and run via the nose
# multiprocess plugin or as a specific test this may be
# missing. See https://github.com/matplotlib/matplotlib/issues/3314
assert mods.pop(0) == 'tests'
if mods.pop(0) != 'tests':
warnings.warn(("Module '%s' does not live in a parent module "
"named 'tests'. This is probably ok, but we may not be able "
"to guess the correct subdirectory containing the baseline "
"images. If things go wrong please make sure that there is "
"a parent directory named 'tests' and that it contains a "
"__init__.py file (can be empty).") % module_name)
subdir = os.path.join(*mods)

import imp
def find_dotted_module(module_name, path=None):
"""A version of imp which can handle dots in the module name"""
"""A version of imp which can handle dots in the module name.
As for imp.find_module(), the return value is a 3-element
tuple (file, pathname, description)."""
res = None
for sub_mod in module_name.split('.'):
try:
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