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