From 9e7951fc3ac182fcfabed4e389c34b2506b37db8 Mon Sep 17 00:00:00 2001
From: Thomas A Caswell <tcaswell@gmail.com>
Date: Sun, 1 Sep 2019 15:19:09 -0400
Subject: [PATCH] TST: verify warnings fail the test suite

---
 lib/matplotlib/tests/test_testing.py | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 lib/matplotlib/tests/test_testing.py

diff --git a/lib/matplotlib/tests/test_testing.py b/lib/matplotlib/tests/test_testing.py
new file mode 100644
index 000000000000..55415abb6a04
--- /dev/null
+++ 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")