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from pathlib import Path
import pytest
from PIL import Image, ImageDraw
TEST_NAME = "test_base_style"
@pytest.fixture(scope="module")
def baseline_image(tmp_path_factory):
path = Path(__file__).parent / "baseline" / "2.0.x" / f"{TEST_NAME}.png"
with Image.open(path) as image:
draw = ImageDraw.Draw(image)
draw.rectangle(((0, 0), (100, 100)), fill="red")
output = tmp_path_factory.mktemp("data") / f"{TEST_NAME}.png"
image.save(output)
return output
@pytest.mark.parametrize(
"ini, cli, kwarg, success_expected",
[
(40, None, None, True),
(30, 40, None, True),
(30, 30, 40, True),
(30, 40, 30, False),
(40, 30, 30, False),
],
)
def test_config(pytester, baseline_image, ini, cli, kwarg, success_expected):
ini = f"mpl-default-tolerance = {ini}" if ini else ""
pytester.makeini(
f"""
[pytest]
mpl-default-style = fivethirtyeight
mpl-baseline-path = {baseline_image.parent}
{ini}
"""
)
kwarg = f"tolerance={kwarg}" if kwarg else ""
pytester.makepyfile(
f"""
import matplotlib.pyplot as plt
import pytest
@pytest.mark.mpl_image_compare({kwarg})
def {TEST_NAME}():
fig, ax = plt.subplots()
ax.plot([1, 2, 3])
return fig
"""
)
cli = f"--mpl-default-tolerance={cli}" if cli else ""
result = pytester.runpytest("--mpl", cli)
if success_expected:
result.assert_outcomes(passed=1)
else:
result.assert_outcomes(failed=1)
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