1 files changed, 30 insertions, 0 deletions
diff --git a/gerbonara/tests/conftest.py b/gerbonara/tests/conftest.py
new file mode 100644
index 0000000..131ca28
--- /dev/null
+++ b/gerbonara/tests/conftest.py
@@ -0,0 +1,30 @@
+
+from pathlib import Path
+
+import pytest
+
+from .image_support import ImageDifference
+
+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()