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150 lines
4.9 KiB
Python
150 lines
4.9 KiB
Python
from __future__ import annotations
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import pytest
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from PIL import Image
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from PIL.Image import Transpose
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from . import helper
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from .helper import assert_image_equal
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HOPPER = {
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mode: helper.hopper(mode).crop((0, 0, 121, 127)).copy()
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for mode in ["L", "RGB", "I;16", "I;16L", "I;16B"]
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}
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@pytest.mark.parametrize("mode", HOPPER)
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def test_flip_left_right(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.FLIP_LEFT_RIGHT)
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assert out.mode == mode
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assert out.size == im.size
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((x - 2, 1))
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assert im.getpixel((x - 2, 1)) == out.getpixel((1, 1))
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assert im.getpixel((1, y - 2)) == out.getpixel((x - 2, y - 2))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((1, y - 2))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_flip_top_bottom(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.FLIP_TOP_BOTTOM)
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assert out.mode == mode
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assert out.size == im.size
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((1, y - 2))
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assert im.getpixel((x - 2, 1)) == out.getpixel((x - 2, y - 2))
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assert im.getpixel((1, y - 2)) == out.getpixel((1, 1))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((x - 2, 1))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_rotate_90(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.ROTATE_90)
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assert out.mode == mode
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assert out.size == im.size[::-1]
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((1, x - 2))
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assert im.getpixel((x - 2, 1)) == out.getpixel((1, 1))
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assert im.getpixel((1, y - 2)) == out.getpixel((y - 2, x - 2))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((y - 2, 1))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_rotate_180(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.ROTATE_180)
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assert out.mode == mode
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assert out.size == im.size
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((x - 2, y - 2))
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assert im.getpixel((x - 2, 1)) == out.getpixel((1, y - 2))
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assert im.getpixel((1, y - 2)) == out.getpixel((x - 2, 1))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((1, 1))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_rotate_270(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.ROTATE_270)
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assert out.mode == mode
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assert out.size == im.size[::-1]
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((y - 2, 1))
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assert im.getpixel((x - 2, 1)) == out.getpixel((y - 2, x - 2))
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assert im.getpixel((1, y - 2)) == out.getpixel((1, 1))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((1, x - 2))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_transpose(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.TRANSPOSE)
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assert out.mode == mode
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assert out.size == im.size[::-1]
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((1, 1))
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assert im.getpixel((x - 2, 1)) == out.getpixel((1, x - 2))
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assert im.getpixel((1, y - 2)) == out.getpixel((y - 2, 1))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((y - 2, x - 2))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_tranverse(mode: str) -> None:
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im = HOPPER[mode]
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out = im.transpose(Transpose.TRANSVERSE)
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assert out.mode == mode
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assert out.size == im.size[::-1]
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x, y = im.size
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assert im.getpixel((1, 1)) == out.getpixel((y - 2, x - 2))
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assert im.getpixel((x - 2, 1)) == out.getpixel((y - 2, 1))
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assert im.getpixel((1, y - 2)) == out.getpixel((1, x - 2))
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assert im.getpixel((x - 2, y - 2)) == out.getpixel((1, 1))
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@pytest.mark.parametrize("mode", HOPPER)
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def test_roundtrip(mode: str) -> None:
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im = HOPPER[mode]
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def transpose(first: Transpose, second: Transpose) -> Image.Image:
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return im.transpose(first).transpose(second)
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assert_image_equal(
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im, transpose(Transpose.FLIP_LEFT_RIGHT, Transpose.FLIP_LEFT_RIGHT)
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)
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assert_image_equal(
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im, transpose(Transpose.FLIP_TOP_BOTTOM, Transpose.FLIP_TOP_BOTTOM)
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)
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assert_image_equal(im, transpose(Transpose.ROTATE_90, Transpose.ROTATE_270))
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assert_image_equal(im, transpose(Transpose.ROTATE_180, Transpose.ROTATE_180))
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assert_image_equal(
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im.transpose(Transpose.TRANSPOSE),
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transpose(Transpose.ROTATE_90, Transpose.FLIP_TOP_BOTTOM),
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)
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assert_image_equal(
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im.transpose(Transpose.TRANSPOSE),
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transpose(Transpose.ROTATE_270, Transpose.FLIP_LEFT_RIGHT),
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)
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assert_image_equal(
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im.transpose(Transpose.TRANSVERSE),
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transpose(Transpose.ROTATE_90, Transpose.FLIP_LEFT_RIGHT),
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)
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assert_image_equal(
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im.transpose(Transpose.TRANSVERSE),
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transpose(Transpose.ROTATE_270, Transpose.FLIP_TOP_BOTTOM),
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)
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assert_image_equal(
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im.transpose(Transpose.TRANSVERSE),
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transpose(Transpose.ROTATE_180, Transpose.TRANSPOSE),
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)
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