def test_flip_input_string():
'''
Test that if the input is string.
'''
with pytest.raises(AttributeError):
flip(123, test_output_file_path, "v")
def test_flip_output_string():
'''
Test that if the output is string.
'''
with pytest.raises(ValueError):
flip(test_input_file_path, 123, "v")
def test_invalid_input():
'''
Test if the input direction is valid
'''
with pytest.raises(AssertionError):
flip(test_input_file_path, test_output_file_path, "123")
def test_nonexistent_input_path():
'''
Test if the input path exists or not
'''
with pytest.raises(FileNotFoundError):
flip("test_imgs/hello/world.png", test_output_file_path, "v")
def test_nonexistent_output_path():
'''
Test if the output path exists or not
'''
with pytest.raises(FileNotFoundError):
flip(test_input_file_path, "./123/456.jpg", "v")
def test_flip_input_shape():
'''
Test that if the image has correct shape
'''
flip(test_input_file_path, test_output_file_path, "v")
input_img = skimage.io.imread(test_input_file_path)
assert np.size(input_img.shape) == 3
def test_flip_same_size():
'''
Test that the output size is correct
'''
flip(test_input_file_path, test_output_file_path, "v")
input_img = skimage.io.imread(test_input_file_path)
test_output = skimage.io.imread(test_output_file_path)
assert input_img.shape == test_output.shape, "Input and output shape are not the same"
def test_flip_input_type():
'''
Test that if the input type is png.
'''
with pytest.raises(OSError):
flip("test_imgs/emboss/input.pdf", test_output_file_path, "v")
with pytest.raises(OSError):
flip("test_input.jpg", test_output_file_path, "v")
def test_flip_h():
flip(test_input_file_path, test_output_file_path, "h")
test_output_h = skimage.io.imread(test_output_file_path)
assert np.array_equal(
test_output_h,
exp_output_h), "The flip function does not work properly."