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56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
from __future__ import annotations
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import pytest
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from PIL import Image
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def test_setmode() -> None:
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im = Image.new("L", (1, 1), 255)
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im.im.setmode("1")
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assert im.im.getpixel((0, 0)) == 255
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im.im.setmode("L")
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assert im.im.getpixel((0, 0)) == 255
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im = Image.new("1", (1, 1), 1)
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im.im.setmode("L")
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assert im.im.getpixel((0, 0)) == 255
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im.im.setmode("1")
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assert im.im.getpixel((0, 0)) == 255
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im = Image.new("RGB", (1, 1), (1, 2, 3))
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im.im.setmode("RGB")
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assert im.im.getpixel((0, 0)) == (1, 2, 3)
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im.im.setmode("RGBA")
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assert im.im.getpixel((0, 0)) == (1, 2, 3, 255)
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im.im.setmode("RGBX")
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assert im.im.getpixel((0, 0)) == (1, 2, 3, 255)
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im.im.setmode("RGB")
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assert im.im.getpixel((0, 0)) == (1, 2, 3)
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with pytest.raises(ValueError):
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im.im.setmode("L")
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with pytest.raises(ValueError):
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im.im.setmode("RGBABCDE")
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@pytest.mark.parametrize("mode", Image.MODES)
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def test_equal(mode):
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num_img_bytes = len(Image.new(mode, (2, 2)).tobytes())
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data = bytes(range(ord("A"), ord("A") + num_img_bytes))
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img_a = Image.frombytes(mode, (2, 2), data)
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img_b = Image.frombytes(mode, (2, 2), data)
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assert img_a.tobytes() == img_b.tobytes()
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assert img_a.im == img_b.im
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@pytest.mark.parametrize("mode", Image.MODES)
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def test_not_equal(mode):
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num_img_bytes = len(Image.new(mode, (2, 2)).tobytes())
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data_a = bytes(range(ord("A"), ord("A") + num_img_bytes))
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data_b = bytes(range(ord("Z"), ord("Z") - num_img_bytes, -1))
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img_a = Image.frombytes(mode, (2, 2), data_a)
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img_b = Image.frombytes(mode, (2, 2), data_b)
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assert img_a.tobytes() != img_b.tobytes()
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assert img_a.im != img_b.im
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