mirror of https://github.com/python/cpython
26 lines
1.0 KiB
Python
26 lines
1.0 KiB
Python
|
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)
|