from helper import unittest, PillowTestCase, hopper from PIL import Image, ImImagePlugin # 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_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 while True: n_frames -= 1 try: im.seek(n_frames) break except EOFError: self.assertTrue(im.tell() < n_frames) def test_roundtrip(self): out = self.tempfile('temp.im') im = hopper() im.save(out) reread = Image.open(out) self.assert_image_equal(reread, im) def test_invalid_file(self): invalid_file = "Tests/images/flower.jpg" self.assertRaises(SyntaxError, lambda: ImImagePlugin.ImImageFile(invalid_file)) if __name__ == '__main__': unittest.main()