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128 lines
2.7 KiB
Python
128 lines
2.7 KiB
Python
from __future__ import annotations
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import pytest
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from PIL import ImageWin
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from .helper import hopper, is_win32
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class TestImageWin:
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def test_sanity(self) -> None:
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dir(ImageWin)
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def test_hdc(self) -> None:
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# Arrange
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dc = 50
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# Act
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hdc = ImageWin.HDC(dc)
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dc2 = int(hdc)
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# Assert
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assert dc2 == 50
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def test_hwnd(self) -> None:
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# Arrange
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wnd = 50
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# Act
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hwnd = ImageWin.HWND(wnd)
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wnd2 = int(hwnd)
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# Assert
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assert wnd2 == 50
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@pytest.mark.skipif(not is_win32(), reason="Windows only")
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class TestImageWinDib:
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def test_dib_image(self) -> None:
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# Arrange
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im = hopper()
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# Act
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dib = ImageWin.Dib(im)
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# Assert
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assert dib.size == im.size
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def test_dib_mode_string(self) -> None:
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# Arrange
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mode = "RGBA"
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size = (128, 128)
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# Act
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dib = ImageWin.Dib(mode, size)
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# Assert
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assert dib.size == (128, 128)
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with pytest.raises(ValueError):
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ImageWin.Dib(mode)
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def test_dib_hwnd(self) -> None:
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mode = "RGBA"
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size = (128, 128)
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wnd = 0
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dib = ImageWin.Dib(mode, size)
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hwnd = ImageWin.HWND(wnd)
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dib.expose(hwnd)
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dib.draw(hwnd, (0, 0) + size)
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assert isinstance(dib.query_palette(hwnd), int)
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def test_dib_paste(self) -> None:
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# Arrange
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im = hopper()
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mode = "RGBA"
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size = (128, 128)
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dib = ImageWin.Dib(mode, size)
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# Act
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dib.paste(im)
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# Assert
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assert dib.size == (128, 128)
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def test_dib_paste_bbox(self) -> None:
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# Arrange
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im = hopper()
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bbox = (0, 0, 10, 10)
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mode = "RGBA"
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size = (128, 128)
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dib = ImageWin.Dib(mode, size)
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# Act
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dib.paste(im, bbox)
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# Assert
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assert dib.size == (128, 128)
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def test_dib_frombytes_tobytes_roundtrip(self) -> None:
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# Arrange
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# Make two different DIB images
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im = hopper()
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dib1 = ImageWin.Dib(im)
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mode = "RGB"
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size = (128, 128)
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dib2 = ImageWin.Dib(mode, size)
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# Confirm they're different
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assert dib1.tobytes() != dib2.tobytes()
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# Act
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# Make one the same as the using tobytes()/frombytes()
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test_buffer = dib1.tobytes()
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for datatype in ("bytes", "memoryview"):
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if datatype == "memoryview":
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test_buffer = memoryview(test_buffer)
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dib2.frombytes(test_buffer)
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# Assert
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# Confirm they're the same
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assert dib1.tobytes() == dib2.tobytes()
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