This prevents referring to a generic type without filling in its generic
type parameters.
The FixtureDef typing might need some more refining in the future.
Use `testdir.syspathinsert()` with multiprocessing tests:
- test_chained_exceptions_no_reprcrash
- test_exception_handling_no_traceback
This only works currently because `_importtestmodule` changes `sys.path`
as a side-effect.
It appears to be only required on Windows though - likely due to the
multiprocessing method used there.
The convention is "assert result is expected". Pytest's error diffs now
reflect this. "-" means that sth. expected is missing in the result and
"+" means that there are unexpected extras in the result.
Fixes: #3333
This fixes/removes the previous hack of re-trying with minimum width,
which fails short when it splits strings.
This inherits from `pprint.PrettyPrinter` to override `_format` in a
minimal way to always dispatch, regardless of the given width.
Code ref: 5c0c325453/Lib/pprint.py (L170-L178)
Follow-up to 946434c61 (#5924).
Before this patch the test would look like this:
{'env': {'sub...s wrapped'}}}} == {'env': {'sub...}}}, 'new': 1}
Omitting 1 identical items, use -vv to show
Right contains 1 more item:
{'new': 1}
Full diff:
{
'env': {'sub': {'long_a': 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
- 'sub1': {'long_a': 'substring '
+ 'sub1': {'long_a': 'substring that gets wrapped'}}},
? +++++++++++++++++ ++++
+ 'new': 1,
- 'that '
- 'gets '
- 'wrapped'}}},
}
Massage text input for difflib when comparing pformat output of
different line lengths.
Also do not strip ndiff output on the left, which currently already
removes indenting for lines with no differences.
Before:
E AssertionError: assert ['version', '...version_info'] == ['version', '...version', ...]
E Right contains 3 more items, first extra item: ' '
E Full diff:
E - ['version', 'version_info', 'sys.version', 'sys.version_info']
E + ['version',
E + 'version_info',
E + 'sys.version',
E + 'sys.version_info',
E + ' ',
E + 'sys.version',
E + 'sys.version_info']
After:
E AssertionError: assert ['version', '...version_info'] == ['version', '...version', ...]
E Right contains 3 more items, first extra item: ' '
E Full diff:
E [
E 'version',
E 'version_info',
E 'sys.version',
E 'sys.version_info',
E + ' ',
E + 'sys.version',
E + 'sys.version_info',
E ]
attrs 19.2 deprecated cmp in favor of the dataclass-ish eq/order duo.
This causes deprecation warnings that in turn break some of the cool new deep
object comparisons. Since we at attrs expected this to be a problem, it shipped
with helpers to write backward and forward compatible code.
This PR uses that and avoids changed to minimal versions.
