def test_raise_from_different(self):
try:
raise ValueError()
except Exception as exc:
try:
raise_from(KeyError(), TypeError())
except Exception:
self.check_capture(['TypeError', 'KeyError'])
def test_raise_from(self):
try:
raise ValueError()
except Exception as exc:
try:
raise_from(KeyError(), exc)
except Exception:
self.check_capture(['ValueError', 'KeyError'])
def test_handles_self_referencing(self):
try:
raise ValueError()
except Exception as exc:
try:
raise_from(exc, exc)
except Exception:
self.check_capture(['ValueError'])
else:
pytest.fail()
else:
pytest.fail()
try:
raise ValueError()
except Exception as exc:
try:
raise_from(KeyError(), exc)
except KeyError as exc2:
try:
raise_from(exc, exc2)
except Exception:
self.check_capture(['KeyError', 'ValueError'])
else:
pytest.fail()
else:
pytest.fail()
