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https://github.com/python-pillow/Pillow.git
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54 lines
1.2 KiB
Python
54 lines
1.2 KiB
Python
from __future__ import annotations
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from io import BytesIO
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import pytest
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from PIL import Image, MpegImagePlugin
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from unittest.mock import MagicMock, patch
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def test_identify() -> None:
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# Arrange
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b = BytesIO(b"\x00\x00\x01\xb3\x01\x00\x01")
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# Act
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with Image.open(b) as im:
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# Assert
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assert im.format == "MPEG"
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assert im.mode == "RGB"
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assert im.size == (16, 1)
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def test_invalid_file() -> None:
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# Arrange
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invalid_file = "Tests/images/flower.jpg"
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# Act / Assert
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with pytest.raises(SyntaxError):
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MpegImagePlugin.MpegImageFile(invalid_file)
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def test_load() -> None:
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# Arrange
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b = BytesIO(b"\x00\x00\x01\xb3\x01\x00\x01")
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with Image.open(b) as im:
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# Act / Assert: cannot load
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with pytest.raises(OSError):
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im.load()
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def test_peek_with_negative_c() -> None:
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fp = MagicMock()
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return_values = [-1, 255]
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with patch.object(MpegImagePlugin.BitStream, 'next', side_effect=return_values):
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bitstream = MpegImagePlugin.BitStream(fp)
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result = bitstream.peek(8)
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assert result == 255
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