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from __future__ import annotations
from io import BytesIO
import pytest
from PIL import Image, MpegImagePlugin
def test_identify() -> None:
# Arrange
b = BytesIO(b"\x00\x00\x01\xb3\x01\x00\x01")
# Act
with Image.open(b) as im:
# Assert
assert im.format == "MPEG"
assert im.mode == "RGB"
assert im.size == (16, 1)
def test_invalid_file() -> None:
# Arrange
invalid_file = "Tests/images/flower.jpg"
# Act / Assert
with pytest.raises(SyntaxError):
MpegImagePlugin.MpegImageFile(invalid_file)
def test_load() -> None:
# Arrange
b = BytesIO(b"\x00\x00\x01\xb3\x01\x00\x01")
with Image.open(b) as im:
# Act / Assert: cannot load
with pytest.raises(OSError):
im.load()
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