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from pathlib import Path
import pytest
from .image_support import ImageDifference, run_cargo_cmd
def pytest_assertrepr_compare(op, left, right):
if isinstance(left, ImageDifference) or isinstance(right, ImageDifference):
diff = left if isinstance(left, ImageDifference) else right
return [
f'Image difference assertion failed.',
f' Calculated difference: {diff}',
f' Histogram: {diff.histogram}', ]
# store report in node object so tmp_gbr can determine if the test failed.
@pytest.hookimpl(tryfirst=True, hookwrapper=True)
def pytest_runtest_makereport(item, call):
outcome = yield
rep = outcome.get_result()
setattr(item, f'rep_{rep.when}', rep)
fail_dir = Path('gerbonara_test_failures')
def pytest_sessionstart(session):
if not hasattr(session.config, 'workerinput'): # on worker
return
# on coordinator
for f in chain(fail_dir.glob('*.gbr'), fail_dir.glob('*.png')):
f.unlink()
try:
run_cargo_cmd('resvg', '--help')
except FileNotFoundError:
pytest.exit('resvg binary not found, aborting test.', 2)
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