pytest.warns checks for subclass relationship

rather than class equality. This makes it more similar to
pytest.raises.

1 files changed, 10 insertions, 0 deletions

diff --git a/testing/test_recwarn.py b/testing/test_recwarn.py
index 6c4d73ff7..ef2ebd74c 100644
--- a/testing/test_recwarn.py
+++ b/testing/test_recwarn.py
@@ -238,6 +238,16 @@ class TestWarns(object):
         assert str(record[0].message) == "user"
         assert str(record[1].message) == "runtime"
 
+    def test_record_by_subclass(self):
+        with pytest.warns(Warning) as record:
+            warnings.warn("user", UserWarning)
+            warnings.warn("runtime", RuntimeWarning)
+
+        assert len(record) == 2
+        assert str(record[0].message) == "user"
+        assert str(record[1].message) == "runtime"
+
+
     def test_double_test(self, testdir):
         """If a test is run again, the warning should still be raised"""
         testdir.makepyfile('''