Pillow/Tests/test_imageshow.py

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from .helper import PillowTestCase, hopper
from PIL import Image
from PIL import ImageShow
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class TestImageShow(PillowTestCase):
def test_sanity(self):
dir(Image)
dir(ImageShow)
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def test_register(self):
# Test registering a viewer that is not a class
ImageShow.register("not a class")
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# Restore original state
ImageShow._viewers.pop()
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def test_show(self):
class TestViewer:
methodCalled = False
def show(self, image, title=None, **options):
self.methodCalled = True
return True
viewer = TestViewer()
ImageShow.register(viewer, -1)
im = hopper()
self.assertTrue(ImageShow.show(im))
self.assertTrue(viewer.methodCalled)
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# Restore original state
ImageShow._viewers.pop(0)
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def test_viewer(self):
viewer = ImageShow.Viewer()
self.assertIsNone(viewer.get_format(None))
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self.assertRaises(NotImplementedError, viewer.get_command, None)
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def test_viewers(self):
for viewer in ImageShow._viewers:
viewer.get_command('test.jpg')