diff options
Diffstat (limited to 'Lib/unittest')
| -rw-r--r-- | Lib/unittest/result.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Lib/unittest/result.py b/Lib/unittest/result.py index 3da7005..5ca4c23 100644 --- a/Lib/unittest/result.py +++ b/Lib/unittest/result.py @@ -196,6 +196,7 @@ class TestResult(object): ret = None first = True excs = [(exctype, value, tb)] + seen = {id(value)} # Detect loops in chained exceptions. while excs: (exctype, value, tb) = excs.pop() # Skip test runner traceback levels @@ -214,8 +215,9 @@ class TestResult(object): if value is not None: for c in (value.__cause__, value.__context__): - if c is not None: + if c is not None and id(c) not in seen: excs.append((type(c), c, c.__traceback__)) + seen.add(id(c)) return ret def _is_relevant_tb_level(self, tb): |