def test_handler(tmp_path):
class TestHandler:
opened = False
loaded = False
saved = False
def open(self, im):
self.opened = True
def load(self, im):
self.loaded = True
return Image.new("RGB", (1, 1))
def save(self, im, fp, filename):
self.saved = True
handler = TestHandler()
Hdf5StubImagePlugin.register_handler(handler)
with Image.open(TEST_FILE) as im:
assert handler.opened
assert not handler.loaded
im.load()
assert handler.loaded
temp_file = str(tmp_path / "temp.h5")
im.save(temp_file)
assert handler.saved
Hdf5StubImagePlugin._handler = None
def test_save():
# Arrange
with Image.open(TEST_FILE) as im:
dummy_fp = None
dummy_filename = "dummy.filename"
# Act / Assert: stub cannot save without an implemented handler
with pytest.raises(OSError):
im.save(dummy_filename)
with pytest.raises(OSError):
Hdf5StubImagePlugin._save(im, dummy_fp, dummy_filename)
def test_invalid_file():
# Arrange
invalid_file = "Tests/images/flower.jpg"
# Act / Assert
with pytest.raises(SyntaxError):
Hdf5StubImagePlugin.HDF5StubImageFile(invalid_file)
def test_invalid_file(self):
# Arrange
invalid_file = "Tests/images/flower.jpg"
# Act / Assert
self.assertRaises(SyntaxError,
lambda:
Hdf5StubImagePlugin.HDF5StubImageFile(invalid_file))
def test_save(self):
# Arrange
im = Image.open(TEST_FILE)
dummy_fp = None
dummy_filename = "dummy.filename"
# Act / Assert: stub cannot save without an implemented handler
self.assertRaises(IOError, lambda: im.save(dummy_filename))
self.assertRaises(
IOError,
lambda: Hdf5StubImagePlugin._save(im, dummy_fp, dummy_filename))
def test_save(self):
# Arrange
im = Image.open(TEST_FILE)
dummy_fp = None
dummy_filename = "dummy.filename"
# Act / Assert: stub cannot save without an implemented handler
self.assertRaises(IOError, lambda: im.save(dummy_filename))
self.assertRaises(
IOError,
lambda: Hdf5StubImagePlugin._save(im, dummy_fp, dummy_filename))
def test_invalid_file(self):
test_file = "Tests/images/flower.jpg"
self.assertRaises(
SyntaxError,
lambda: Hdf5StubImagePlugin.HDF5StubImageFile(test_file))