Previously the error report would have all sections glued together:
- The assertion representation
- The error explanation
- The full diff
This makes it hard to see at a glance where which one starts and ends.
One of the representation (dataclasses, tuples, attrs) does display a
newlines at the start already.
Let's add a newlines before the error explanation and before the full
diff, so we get an easier to read report.
This has one disadvantage: we get one line less in the least verbose
mode, where the output gets truncated.
When running `tox -e py-lsof` I get a deluge of this warning:
```
src/pytest/.tox/py-lsof-numpy-pexpect/lib/python3.11/site-packages/_pytest/pytester.py:130: EncodingWarning: UTF-8 Mode affects locale.getpreferredencoding(). Consider locale.getencoding() instead.
```
Use `locale.getencoding` instead.
The normal default pretty printer is not great when objects are nested
and it can get hard to read the diff.
Instead, provide a pretty printer that behaves more like when json get
indented, which allows for smaller, more meaningful differences, at
the expense of a slightly longer diff.
This does not touch the other places where the pretty printer is used,
and only updated the full diff one.
We already have the AlwaysDispatchingPrettyPrinter override of the
default pretty printer. In order to make more in depth changes, we
need to copy the upstream version in, as it doesn't lend itself well to
being extended.
This does a verbatime copy, adding provenance information at the top.
The current method as the following problem, described by Sadra
Barikbin:
The tests that request both `pytester` and `monkeypatch` and use
`monkeypatch.chdir` without context, relying on `monkeypatch`'s teardown
to restore cwd. This doesn't work because the following sequence of
actions take place:
- `monkeypatch` is set up.
- `pytester` is set up. It saves the original cwd and changes it to a
new one dedicated to the test function.
- Test function calls `monkeypatch.chdir()` without context.
`monkeypatch` saves cwd, which is not the original one, before
changing it.
- `pytester` is torn down. It restores the cwd to the original one.
- `monkeypatch` is torn down. It restores cwd to what it has saved.
The solution here is to have pytester use `monkeypatch.chdir()` itself,
then everything is handled correctly.
Tests if a captured exception group contains an expected exception.
Will raise `AssertionError` if the wrapped exception is not an exception group.
Supports recursive search into nested exception groups.
Starting with `resolve_package_path` and its associated tests,
this refactoring seeks to make path concatenation more
readable and consistent within tests/functions.
As discussed in #11413:
- code is free to use either `/` and `joinpath`
- consistency within a function is more important than consistency across the codebase
- it is nice to use `/` when it is more readable
- it is nice to use `joinpath` when there is little context
- be mindful that `joinpath` may be clearer when joining multiple segments
There used to be two callers to `_setup_fixtures()`, now there's only
one, so inline it and make `DoctestItem` more similar to `Function`.
(Eventually we may want to generalize `TopRequest` from taking
`Function` directly to some "fixture-supporting item", removing the
remaining `type: ignore` here and allowing plugins to do it in a stable
manner).
For packages, `import_path` receives the path to the package's `__init__.py` file, however module names (as they live in `sys.modules`) should not include the `__init__` part.
For example, `app/core/__init__.py` should be imported as `app.core`, not as `app.core.__init__`.
Fix#11306
I could find 2 plugins that would be broken by this (pytest-play and
pytest-wdl), but they will be better served by just copying
`_fillfixtures` instead of use the private function.
`_pyfuncitem.fixturenames` is just an alias for
`_pyfuncitem._fixtureinfo.names_closure` (at least in core pytest), so
let's do the less abstraction-breaking thing.
Move handling of user_properties to `finalize()`.
Previously if a fixture failed during teardown, `pytest_runtest_logreport` would not be called with "teardown", resulting in the user properties not being saved on the JUnit XML file.
Fixes: #11367
This reverts commit e938580257.
Revert "improve error msg and test"
This reverts commit c0cf822ca1.
Revert "error msg"
This reverts commit ec1053cc16.
Revert "changelog"
This reverts commit d2dc8a70b5.
Revert "simplify code / take out user-gen typeerror case"
This reverts commit b9cb87d862.
To remove fixtures.py::add_funcargs_pseudo_fixture_def and add its logic
i.e. registering funcargs as params and making corresponding fixturedefs,
right to Metafunc.parametrize in which parametrization takes place.
To remove funcargs from metafunc attributes as we populate metafunc
params and make pseudo fixturedefs simultaneously and there's no need to
keep funcargs separately.
Previously, when assigning a scope for a fully-indirect parameter set,
when there are multiple fixturedefs for a param (i.e. same-name fixture
chain), the highest scope was used, but it should be the lowest scope,
since that's the effective scope of the fixture.
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Previously, the `_getconftestmodules` function was used both to load
conftest modules for a path (during `pytest_load_initial_conftests`),
and to retrieve conftest modules for a path (during hook dispatch and
for fetching `collect_ignore`). This made things muddy - it is usually
nicer to have clear separation between "command" and "query" functions,
when they occur in separate phases.
So split into "load" and "get".
Currently, `gethookproxy` still loads conftest itself. I hope to change
this in the future.
FixtureDef is used in the `pytest_fixture_setup` hook so needs to be
public. However since its current internals are quite dubious (and not
all marked with `_` prefix) I've added an explicit note that only
documented fields/methods are considered public.
Refs #7469.
From understanding the code better I see this is the correct fix.
The fixturedefs can be None if `request.getfixturevalue("doesnotexist")`
is used.
In practice there is no change in behavior because this mapping is used
as `self._arg2fixturedefs.get(argname, None)` which ends up the same.
It makes for a more debuggable repr. Before:
<function FixtureRequest._schedule_finalizers.<locals>.<lambda> at 0x7fe4ae32d440>
After:
functools.partial(<bound method FixtureDef.finish of <FixtureDef argname='hello_package' scope='package' baseid=''>>, request=<SubRequest 'hello_package' for <Function test_hello>>)
Add explicit mentions of the default behavior to both API reference and
how-to section about ways to invoke pytest.
Co-authored-by: Ran Benita <ran@unusedvar.com>
Dict comparsion in the ApproxMapping class did not check if values were None before attempting to subtract for max_abs_diff stat, which was throwing an TypeError instead of being handled by pytest error assertion. Check for None has been added before these calculations, so that None will properly show as Obtained/Expected in pytest assert message
The initial implementation (in #7246) introduced the `importlib` mode, which
never added the imported module to `sys.modules`, so it included a test
to ensure calling `import_path` twice would yield different modules.
Not adding modules to `sys.modules` proved problematic, so we began to add the imported module to `sys.modules`
in #7870, but failed to realize that given we are now changing `sys.modules`, we might
as well avoid importing it more than once.
Then #10088 came along, passing `importlib` also when importing application modules
(as opposed to only test modules before), which caused problems due to imports
having side-effects and the expectation being that they are imported only once.
With this PR, `import_path` returns the module immediately if already in
`sys.modules`.
Fix#10811Fix#10341
Fixes#11104.
See the issue for a description of the problem.
Now, we use the same logic for initial conftest paths as we do for
deciding the initial args, which was the idea behind checking
`namespace.file_or_dir` and `testpaths` previously.
This fixes the issue of `testpaths` being considered for initial
conftests even when it's not used for the args.
(Another issue in faeb16146b was that the
`testpaths` were not glob-expanded, this is also fixed.)
I think it's helpful to separate the node classes from the other
objects, as they have their own unique usage.
I've chosen not to alphabetize the order, but to use a logical order
instead.
Also slightly improve the docstrings.
Currently, if `--confcutdir` is not set, `inipath.parent` is used, and
if `initpath` is not set, then `confcutdir` is None, which means there
is no cutoff.
Having no cutoff is not great, it means we potentially start probing
stuff all the way up to the filesystem root directory. So let's add
another fallback, to `rootpath`, which is always something reasonable.
In #10758 we introduced the support for the use of the walrus operator in the test cases. There was a case which was not handled that caused a bug report #11028. This PR aims to fix the issue and also to improve how the walrus operator is handled in the AssertionRewriter class.
Closes#11028
Added handling of %f directive to print microseconds in log format options, such as log-date-format. It is impossible to do with a standard logging.Formatter because it uses time.strftime which doesn't know about milliseconds and %f. In this PR I added a custom Formatter which converts LogRecord to a datetime.datetime object and formats it with %f flag. This behaviour is enabled only if a microsecond flag is specified in a format string.
Also added a few tests to check the standard and changed behavior.
Closes#10991
`--lf` has a feature where if a certain `Module` (python file) does not
contain any failed tests, it is skipped entirely at the collector level
instead of being collected and each item skipped individually. When this
happens the collection summary looks like this:
run-last-failure: rerun previous 1 failure (skipped 1 file)
However, this feature didn't work for `Module`s inside of `Package`s,
only for those directly beneath the `Session`.
Fix#11054.
Forces requested `caplog` logging levels to be enabled if they were disabled via `logging.disable()`
`[attr-defined]` mypy error ignored in `logging.py` because there were existing errors with the imports
and `loggin.Logger.manager` is an attr set at runtime. Since it's in the standard lib I can't really fix that.
Ignored an attr-defined error in `src/_pytest/config/__init__.py` because the re-export is necessary.
Fixes#8711
`_set_initial_conftests` could break on some systems if a very long
option was passed, because the `Path.exists()` call raises an
`OSError` instead of returning `False`.
Fix#10169
Fixes a pytest-xdist regression after
762bb61562 (not yet released).
pytest-xdist patches sys.stderr with an object which doesn't have
`encoding`. Strictly speaking, this should be fixed there (or more
precisely, in execnet), but it will drop support for older versions
which don't want.
But in any case, the fix turns out to simplify the code, using FD
support added in Python 3.5, so it's good anyway!
Refs: https://github.com/pytest-dev/pytest-xdist/pull/900
* faulthandler: fix an EncodingWarning
* _py/path: tiny change to `ensure` to silence EncodingWarning
We're not supposed to diverge here, but make this change to fix an
unavoidable EncodingWarning that is otherwise raised in pytest's test
suite. The behavior should be exactly the same besides the warning,
hopefully that won't cause confusion.
Since `Traceback.getcrashentry` takes the `ExceptionInfo`, it is not
really independent of it and is in the wrong layer. Prevent nonsensical
mistakes by inlining it.
TracebackEntry needs the excinfo for the `__tracebackhide__ = callback`
functionality, where `callback` accepts the excinfo.
Currently it achieves this by storing a weakref to the excinfo which
created it. I think this is not great, mixing layers and bloating the
objects.
Instead, have `ishidden` (and transitively, `Traceback.filter()`) take
the excinfo as a parameter.
Closes#10831.
This fixes a small bug where running tests that contained
`pytest.fail(pytrace=False)` with the `--tb=line` flag set results in
an output of "None" in the Failures section of the output, and adds
a test to ensure the behavior is correct.
The problem is that we would loop over all directories of the basetemp directory searching for dead symlinks, for each test, which would compound over the test session run.
Doing the cleanup just once, at the end of the session, fixes the problem.
Fix#10896
By "empty traceback" I mean a traceback all of whose entries have been
filtered/cut/pruned out.
Currently, if an empty traceback needs to be repr'ed, the last entry
before the filtering is used instead (added in
accd962c9f).
Showing a hidden frame is not so good IMO. This commit does the
following instead:
1. Shows details of the exception.
2. Shows a message about how the full trace can be seen.
Example:
```
_____________ test _____________
E ZeroDivisionError: division by zero
All traceback entries are hidden. Pass `--full-trace` to see hidden and internal frames.
```
Also handles `--tb=native`, though there the `--full-trace` bit is not
shown.
This commit contains some pieces from
431ec6d34e (which has been reverted).
Helps towards fixing issue # 1904.
Co-authored-by: Felix Hofstätter <Felhof1@hotmail.com>
The old-style `sys.exc_info()` triplet is redundant nowadays with
`(type(exc), exc, exc.__traceback__)`, and is beginning to get
soft-deprecated in Python 3.12.
Add a nicer API to ExceptionInfo which takes just the exc instead of the
triplet. There are already a few internal uses which benefit.
Fix#10875
Without this, fails with
```
...
E AttributeError: 'TestCaseFunction' object has no attribute 'addDuration'
...
E RuntimeWarning: TestResult has no addDuration method
```
pytest could crash given pathological AST position attributes, which shouldn't happen when testing real Python code, but could happen when testing AST produced by e.g. Hylang.
Another example of the failure is in the nightly CI for the JAX project: https://github.com/google/jax/actions/runs/4607513902/jobs/8142126075
Co-authored-by: Bruno Oliveira <nicoddemus@gmail.com>
Co-authored-by: Jake VanderPlas <jakevdp@google.com>
Nowadays, the prepend and append import modes use importlib.import_module() instead of __import__().
There was a phrase “which avoids having to use `__import__`”, in which I couldn’t just replace `__import__` by `importlib.import_module` because the latter is used (in insert_missing_modules()) also when using importlib mode. Therefore I removed the part from the sentence.
This makes it possible to correlate pytest stages with external events, and also makes it readable when TestReports are exported externall (for example with pytest-reportlog).
Closes#10710
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Instead of `SysCapture`/`FDCapture` inheriting from
`SysCaptureBinary`/`FDCaptureBinary`, have both inherit from a common
`SysCaptureBase`/`FDCaptureBase`. This fixes a Liskov substitution
violation.
Since pytest now requires Python>=3.7, we can use the stdlib attrs
clone, dataclasses, instead of the OG package.
attrs is still somewhat nicer than dataclasses and has some extra
functionality, but for pytest usage there's not really a justification
IMO to impose the extra dependency on users when a standard alternative
exists.
Makes `AbstractContextManager` the shared base class between "raises" and other context managers.
The motivation is for type checkers to narrow `pytest.raises(...) if x else nullcontext()` to a `ContextManager` rather than `object`.
Fixes https://github.com/pytest-dev/pytest/issues/10604 which could intermittently display unexpected behavior between checking if the path exists and requesting creation. This was fairly prevalent when pytest was being invoked in parallel by another test runner (CTest) and trying to create the same parent-folder for multiple XMLs. A modest amount of testing did not reproduce other filesystem race conditions.
This notably does not work around an edge case where the parent path of the XML could be created as a file instead of a folder or link. That vanishingly rare case should cause file creation to fail on the next line, with a fairly obvious exception message.
Ran Benita
Benjamin Schubert
Jens Tröger
Simon Blanchard
Patrick Lannigan
Avasam
Bruno Oliveira
Sharad Nair
Bruno Oliveira
Benjamin Schubert
pre-commit-ci[bot]
ryanpudd
Tanya Agarwal
Reagan Lee
Warren Markham
Chris Mahoney
Mihail Milushev
Mihail Milushev
Marc Mueller
Sadra Barikbin
Fraser Stark
Ronny Pfannschmidt
Israel Fruchter
Sean Patrick Malloy
Jon Parise
Zac Hatfield-Dodds
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DetachHead
Tyler Smart
Christoph Anton Mitterer
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Kenny Y
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Tushar Sadhwani
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Roberto Aldera
Alex Lambson
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Brian Larsen
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Manuel Jacob
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