Pillow/Tests/test_file_gribstub.py

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from helper import unittest, PillowTestCase, hopper
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from PIL import GribStubImagePlugin, Image
TEST_FILE = "Tests/images/WAlaska.wind.7days.grb"
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class TestFileGribStub(PillowTestCase):
def test_open(self):
# Act
im = Image.open(TEST_FILE)
# Assert
self.assertEqual(im.format, "GRIB")
# Dummy data from the stub
self.assertEqual(im.mode, "F")
self.assertEqual(im.size, (1, 1))
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def test_invalid_file(self):
# Arrange
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invalid_file = "Tests/images/flower.jpg"
# Act / Assert
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self.assertRaises(SyntaxError,
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GribStubImagePlugin.GribStubImageFile, invalid_file)
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def test_load(self):
# Arrange
im = Image.open(TEST_FILE)
# Act / Assert: stub cannot load without an implemented handler
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self.assertRaises(IOError, im.load)
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def test_save(self):
# Arrange
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im = hopper()
tmpfile = self.tempfile("temp.grib")
# Act / Assert: stub cannot save without an implemented handler
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self.assertRaises(IOError, im.save, tmpfile)
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if __name__ == '__main__':
unittest.main()