diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py index 89a44911f..8ceb3bae1 100644 --- a/testing/acceptance_test.py +++ b/testing/acceptance_test.py @@ -988,3 +988,33 @@ def test_fixture_order_respects_scope(testdir): ''') result = testdir.runpytest() assert result.ret == 0 + + +def test_frame_leak_on_failing_test(testdir): + """pytest would leak garbage referencing the frames of tests that failed that could never be reclaimed (#2798) + + Unfortunately it was not possible to remove the actual circles because most of them + are made of traceback objects which cannot be weakly referenced. Those objects at least + can be eventually claimed by the garbage collector. + """ + testdir.makepyfile(''' + import gc + import weakref + + class Obj: + pass + + ref = None + + def test1(): + obj = Obj() + global ref + ref = weakref.ref(obj) + assert 0 + + def test2(): + gc.collect() + assert ref() is None + ''') + result = testdir.runpytest_subprocess() + result.stdout.fnmatch_lines(['*1 failed, 1 passed in*'])