Viewing file:  testcase.py (1.02 KB) -rw-r--r--
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class ExceptionIsLikeMixin:
def assertExceptionIsLike(self, exc, template):
"""
Passes when the provided `exc` matches the structure of `template`.
Individual exceptions don't have to be the same objects or even pass
an equality test: they only need to be the same type and contain equal
`exc_obj.args`.
"""
if exc is None and template is None:
return
if template is None:
self.fail(f"unexpected exception: {exc}")
if exc is None:
self.fail(f"expected an exception like {template!r}, got None")
if not isinstance(exc, ExceptionGroup):
self.assertEqual(exc.__class__, template.__class__)
self.assertEqual(exc.args[0], template.args[0])
else:
self.assertEqual(exc.message, template.message)
self.assertEqual(len(exc.exceptions), len(template.exceptions))
for e, t in zip(exc.exceptions, template.exceptions):
self.assertExceptionIsLike(e, t)
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