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90 lines
2.3 KiB
Python
90 lines
2.3 KiB
Python
import unittest
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import pytest
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from PIL import Image, ImImagePlugin
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from .helper import PillowTestCase, assert_image_equal, hopper, is_pypy
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# sample im
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TEST_IM = "Tests/images/hopper.im"
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class TestFileIm(PillowTestCase):
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def test_sanity(self):
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with Image.open(TEST_IM) as im:
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im.load()
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (128, 128))
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self.assertEqual(im.format, "IM")
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@unittest.skipIf(is_pypy(), "Requires CPython")
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def test_unclosed_file(self):
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def open():
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im = Image.open(TEST_IM)
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im.load()
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pytest.warns(ResourceWarning, open)
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def test_closed_file(self):
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def open():
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im = Image.open(TEST_IM)
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im.load()
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im.close()
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pytest.warns(None, open)
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def test_context_manager(self):
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def open():
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with Image.open(TEST_IM) as im:
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im.load()
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pytest.warns(None, open)
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def test_tell(self):
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# Arrange
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with Image.open(TEST_IM) as im:
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# Act
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frame = im.tell()
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# Assert
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self.assertEqual(frame, 0)
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def test_n_frames(self):
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with Image.open(TEST_IM) as im:
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self.assertEqual(im.n_frames, 1)
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self.assertFalse(im.is_animated)
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def test_eoferror(self):
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with Image.open(TEST_IM) as im:
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n_frames = im.n_frames
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# Test seeking past the last frame
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self.assertRaises(EOFError, im.seek, n_frames)
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self.assertLess(im.tell(), n_frames)
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# Test that seeking to the last frame does not raise an error
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im.seek(n_frames - 1)
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def test_roundtrip(self):
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for mode in ["RGB", "P", "PA"]:
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out = self.tempfile("temp.im")
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im = hopper(mode)
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im.save(out)
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with Image.open(out) as reread:
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assert_image_equal(reread, im)
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def test_save_unsupported_mode(self):
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out = self.tempfile("temp.im")
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im = hopper("HSV")
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self.assertRaises(ValueError, im.save, out)
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def test_invalid_file(self):
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invalid_file = "Tests/images/flower.jpg"
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self.assertRaises(SyntaxError, ImImagePlugin.ImImageFile, invalid_file)
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def test_number(self):
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self.assertEqual(1.2, ImImagePlugin.number("1.2"))
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