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import pytest
from PIL import BufrStubImagePlugin, Image
from .helper import hopper
TEST_FILE = "Tests/images/gfs.t06z.rassda.tm00.bufr_d"
def test_open():
# Act
with Image.open(TEST_FILE) as im:
# Assert
assert im.format == "BUFR"
# Dummy data from the stub
assert im.mode == "F"
assert im.size == (1, 1)
def test_invalid_file():
# Arrange
invalid_file = "Tests/images/flower.jpg"
# Act / Assert
with pytest.raises(SyntaxError):
BufrStubImagePlugin.BufrStubImageFile(invalid_file)
def test_load():
# Arrange
with Image.open(TEST_FILE) as im:
# Act / Assert: stub cannot load without an implemented handler
with pytest.raises(OSError):
im.load()
def test_save(tmp_path):
# Arrange
im = hopper()
tmpfile = str(tmp_path / "temp.bufr")
# Act / Assert: stub cannot save without an implemented handler
with pytest.raises(OSError):
im.save(tmpfile)
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