assertrepr_compare: provide more info (location) with exceptions (#6728)

1 files changed, 10 insertions, 2 deletions

diff --git a/testing/test_assertion.py b/testing/test_assertion.py
index 0c0f12340..cf80fba43 100644
--- a/testing/test_assertion.py
+++ b/testing/test_assertion.py
@@ -677,8 +677,16 @@ class TestAssert_reprcompare:
 
         expl = callequal([], [A()])
         assert "ValueError" in "".join(expl)
-        expl = callequal({}, {"1": A()})
-        assert "faulty" in "".join(expl)
+        expl = callequal({}, {"1": A()}, verbose=2)
+        assert expl[0].startswith("{} == <[ValueError")
+        assert "raised in repr" in expl[0]
+        assert expl[1:] == [
+            "(pytest_assertion plugin: representation of details failed:"
+            " {}:{}: ValueError: 42.".format(
+                __file__, A.__repr__.__code__.co_firstlineno + 1
+            ),
+            " Probably an object has a faulty __repr__.)",
+        ]
 
     def test_one_repr_empty(self):
         """