mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-28 22:37:50 +08:00
Tony S Yu
136 lines
3.4 KiB
Python
136 lines
3.4 KiB
Python
from contextlib import contextmanager
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from numpy.testing import assert_equal, raises
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from skimage import io
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from skimage.io import manage_plugins
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from numpy.testing.decorators import skipif
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try:
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io.use_plugin('pil')
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PIL_available = True
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priority_plugin = 'pil'
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except ImportError:
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PIL_available = False
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try:
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io.use_plugin('freeimage')
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FI_available = True
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priority_plugin = 'freeimage'
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except RuntimeError:
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FI_available = False
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def setup_module():
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manage_plugins.use_plugin('test') # see ../_plugins/test_plugin.py
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def teardown_module():
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io.reset_plugins()
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@contextmanager
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def protect_preferred_plugins():
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"""Contexts where `preferred_plugins` can be modified w/o side-effects."""
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preferred_plugins = manage_plugins.preferred_plugins.copy()
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try:
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yield
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finally:
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manage_plugins.preferred_plugins = preferred_plugins
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def test_read():
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io.imread('test.png', as_grey=True, dtype='i4', plugin='test')
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def test_save():
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io.imsave('test.png', [1, 2, 3], plugin='test')
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def test_show():
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io.imshow([1, 2, 3], plugin_arg=(1, 2), plugin='test')
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def test_collection():
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io.imread_collection('*.png', conserve_memory=False, plugin='test')
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def test_use():
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manage_plugins.use_plugin('test')
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manage_plugins.use_plugin('test', 'imshow')
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@raises(ValueError)
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def test_failed_use():
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manage_plugins.use_plugin('asd')
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@skipif(not PIL_available and not FI_available)
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def test_use_priority():
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manage_plugins.use_plugin(priority_plugin)
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plug, func = manage_plugins.plugin_store['imread'][0]
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assert_equal(plug, priority_plugin)
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manage_plugins.use_plugin('test')
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plug, func = manage_plugins.plugin_store['imread'][0]
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assert_equal(plug, 'test')
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@skipif(not PIL_available)
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def test_use_priority_with_func():
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manage_plugins.use_plugin('pil')
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plug, func = manage_plugins.plugin_store['imread'][0]
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assert_equal(plug, 'pil')
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manage_plugins.use_plugin('test', 'imread')
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plug, func = manage_plugins.plugin_store['imread'][0]
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assert_equal(plug, 'test')
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plug, func = manage_plugins.plugin_store['imsave'][0]
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assert_equal(plug, 'pil')
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manage_plugins.use_plugin('test')
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plug, func = manage_plugins.plugin_store['imsave'][0]
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assert_equal(plug, 'test')
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def test_plugin_order():
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p = io.plugin_order()
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assert 'imread' in p
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assert 'test' in p['imread']
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def test_available():
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assert 'qt' in io.available_plugins
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assert 'test' in io.find_available_plugins(loaded=True)
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def test_load_preferred_plugins_all():
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from skimage.io._plugins import null_plugin
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with protect_preferred_plugins():
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manage_plugins.preferred_plugins = {'all': ['null']}
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manage_plugins.reset_plugins()
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for plugin_type in ('imread', 'imsave', 'imshow'):
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plug, func = manage_plugins.plugin_store[plugin_type][0]
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assert func == getattr(null_plugin, plugin_type)
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def test_load_preferred_plugins_imread():
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from skimage.io._plugins import null_plugin
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with protect_preferred_plugins():
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manage_plugins.preferred_plugins['imread'] = ['null']
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manage_plugins.reset_plugins()
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plug, func = manage_plugins.plugin_store['imread'][0]
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assert func == null_plugin.imread
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plug, func = manage_plugins.plugin_store['imshow'][0]
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assert func != null_plugin.imshow
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if __name__ == "__main__":
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from numpy.testing import run_module_suite
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run_module_suite()
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