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Writing `subprocess.Popen[str]` requires python 3.9+.
kunit.py has an assertion that the python version is 3.7+, so we should
try to stay backwards compatible.
This conflicts a bit with commit 1da2e6220e11 ("kunit: tool: fix
pre-existing `mypy --strict` errors and update run_checks.py"), since
mypy complains like so
> kunit_kernel.py:95: error: Missing type parameters for generic type "Popen" [type-arg]
Note: `mypy --strict --python-version 3.7` does not work.
We could annotate each file with comments like
`# mypy: disable-error-code="type-arg"
but then we might still get nudged to break back-compat in other files.
This patch adds a `mypy.ini` file since it seems like the only way to
disable specific error codes for all our files.
Note: run_checks.py doesn't need to specify `--config_file mypy.ini`,
but I think being explicit is better, particularly since most kernel
devs won't be familiar with how mypy works.
Fixes: 695e26030858 ("kunit: tool: add subscripts for type annotations where appropriate")
Reported-by: SeongJae Park <sj@kernel.org>
Link: https://lore.kernel.org/linux-kselftest/20230501171520.138753-1-sj@kernel.org
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Tested-by: SeongJae Park <sj@kernel.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Basically, get this command to be happy and make run_checks.py happy
$ mypy --strict --exclude '_test.py$' --exclude qemu_configs/ ./tools/testing/kunit/
Primarily the changes are
* add `-> None` return type annotations
* add all the missing argument type annotations
Previously, we had false positives from mypy in `main()`, see commit
09641f7c7d8f ("kunit: tool: surface and address more typing issues").
But after commit 2dc9d6ca52a4 ("kunit: kunit.py extract handlers")
refactored things, the variable name reuse mypy hated is gone.
Note: mypy complains we don't annotate the types the unused args in our
signal handler. That's silly.
But to make it happy, I've copy-pasted an appropriate annotation from
https://github.com/python/typing/discussions/1042#discussioncomment-2013595.
Reported-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/linux-kselftest/9a172b50457f4074af41fe1dc8e55dcaf4795d7e.camel@sipsolutions.net/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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E.g. for subprocess.Popen, it can be opened in `text=True` mode where it
returns strings, or `text=False` where it returns bytes.
To differentiate, you can annotate types as `Popen[str]` or
`Popen[bytes]`.
This patch should add subscripts in all the places we were missing them.
Reported-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/linux-kselftest/20230315105055.9b2be0153625.I7a2cb99b95dff216c0feed4604255275e0b156a7@changeid/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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This primarily comes from running pylint over kunit tool code and
ignoring some warnings we don't care about.
If we ever got a fully clean setup, we could add this to run_checks.py,
but we're not there yet.
Fix things like
* Drop unused imports
* check `is None`, not `== None` (see PEP 8)
* remove redundant parens around returns
* remove redundant `else` / convert `elif` to `if` where appropriate
* rename make_arch_qemuconfig() param to base_kunitconfig (this is the
name used in the subclass, and it's a better one)
* kunit_tool_test: check the exit code for SystemExit (could be 0)
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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We're missing the `f` prefix to have python do string interpolation, so
we'd never end up printing what the actual "unexpected" error is.
Fixes: ee92ed38364e ("kunit: add run_checks.py script to validate kunit changes")
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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This formalizes the checks KUnit maintainers have been running (or in
other cases: forgetting to run).
This script also runs them all in parallel to minimize friction (pytype
can be fairly slow, but not slower than running kunit.py).
Example output:
$ ./tools/testing/kunit/run_checks.py
Waiting on 4 checks (kunit_tool_test.py, kunit smoke test, pytype, mypy)...
kunit_tool_test.py: PASSED
mypy: PASSED
pytype: PASSED
kunit smoke test: PASSED
On failure or timeout (5 minutes), it'll dump out the stdout/stderr.
E.g. adding in a type-checking error:
mypy: FAILED
> kunit.py:54: error: Name 'nonexistent_function' is not defined
> Found 1 error in 1 file (checked 8 source files)
mypy and pytype are two Python type-checkers and must be installed.
This file treats them as optional and will mark them as SKIPPED if not
installed.
This tool also runs `kunit.py run --kunitconfig=lib/kunit` to run
KUnit's own KUnit tests and to verify KUnit kernel code and kunit.py
play nicely together.
It uses --build_dir=kunit_run_checks so as not to clobber the default
build_dir, which helps make it faster by reducing the need to rebuild,
esp. if you're been passing in --arch instead of using UML.
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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