allow error message matching in pytest.raises

testing/python/raises.py

@@ -118,3 +118,18 @@ class TestRaises:
         for o in gc.get_objects():
             assert type(o) is not T
 
+
+    def test_raises_match(self):
+        msg = r"with base \d+"
+        with pytest.raises(ValueError, match=msg):
+            int('asdf')
+
+        msg = "with base 10"
+        with pytest.raises(ValueError, match=msg):
+            int('asdf')
+
+        msg = "with base 16"
+        expr = r"Pattern '{}' not found in 'invalid literal for int\(\) with base 10: 'asdf''".format(msg)
+        with pytest.raises(AssertionError, match=expr):
+            with pytest.raises(ValueError, match=msg):
+                int('asdf', base=10)