Merge pull request #15169 from tacaswell/test_fail_on_warning

NelleV · web-flow · commit 55ff0d354105 · 2019-09-03T16:05:45.000+02:00
TST: verify warnings fail the test suite
diff --git a/lib/matplotlib/tests/test_testing.py b/lib/matplotlib/tests/test_testing.py
@@ -0,0 +1,7 @@
+import warnings
+import pytest
+
+@pytest.mark.xfail(strict=True,
+                   reason="testing that warnings fail tests")
+def test_warn_to_fail():
+    warnings.warn("This should fail the test")
