Pillow

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from __future__ import annotations
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from PIL import Image
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def test_getbands() -> None:
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    assert Image.new("1", (1, 1)).getbands() == ("1",)
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    assert Image.new("L", (1, 1)).getbands() == ("L",)
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    assert Image.new("I", (1, 1)).getbands() == ("I",)
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    assert Image.new("F", (1, 1)).getbands() == ("F",)
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    assert Image.new("P", (1, 1)).getbands() == ("P",)
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    assert Image.new("RGB", (1, 1)).getbands() == ("R", "G", "B")
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    assert Image.new("RGBA", (1, 1)).getbands() == ("R", "G", "B", "A")
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    assert Image.new("CMYK", (1, 1)).getbands() == ("C", "M", "Y", "K")
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    assert Image.new("YCbCr", (1, 1)).getbands() == ("Y", "Cb", "Cr")
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