def test_greyscale1():
greyscale("instapy/test/test_img/greyscale/test_img1.png",
"instapy/test/test_img/greyscale/test_img1_gs.png")
output = skimage.io.imread(
"instapy/test/test_img/greyscale/test_img1_gs.png")[:, :, :3]
assert np.array_equal(
output, test_img1_gs), "The greyscale function does not work properly."
def test_greyscale2():
greyscale("instapy/test/test_img/greyscale/test_img2.jpg",
"instapy/test/test_img/greyscale/test_img2_gs.jpg")
output = plt.imread(
"instapy/test/test_img/greyscale/test_img2_gs.jpg")[:, :, :3]
assert (output == test_img2).all(
), "The greyscale function should not change a greyscale image."
def test_greyscale1():
greyscale("instapy/test/test_img/greyscale/test_img1.jpg",
"instapy/test/test_img/greyscale/test_img1_gs.jpg")
output = plt.imread(
"instapy/test/test_img/greyscale/test_img1_gs.jpg")[:, :, :3]
assert (output == test_img1_gs
).all(), "The greyscale function does not work properly."
def test_greyscale2():
greyscale("instapy/test/test_img/greyscale/test_img2.png",
"instapy/test/test_img/greyscale/test_img2_gs.png")
output = skimage.io.imread(
"instapy/test/test_img/greyscale/test_img2_gs.png")[:, :, :3]
assert np.array_equal(
output, test_img2
), "The greyscale function should not change a greyscale image."
def test_nonexistent_output_path():
with pytest.raises(FileNotFoundError):
greyscale("instapy/test/test_img/greyscale/test_img1.png",
"./123/456.png")
def test_non_string_output():
with pytest.raises(AttributeError):
greyscale("instapy/test/test_img/greyscale/test_img1.png", 123)
def test_non_image_input_file():
with pytest.raises(OSError):
greyscale("instapy/test/test_img/greyscale/test.pdf",
"instapy/test/test_img/greyscale/test_img1_gs.png")
def test_non_string_input():
with pytest.raises(AttributeError):
greyscale(123, "instapy/test/test_img/greyscale/test_img1_gs.png")
def test_non_string_output():
with pytest.raises(TypeError):
greyscale("instapy/test/test_img/greyscale/test_img1.jpg", 123)
def test_nonexistent_input_path():
with pytest.raises(FileNotFoundError):
greyscale("./123/456.jpg",
"instapy/test/test_img/greyscale/test_img1_gs.jpg")
