diff mbox series

[RFC,4/8] tests/pytest: add pytest to the meson build system

Message ID 20240711115546.40859-5-thuth@redhat.com
State New
Headers show
Series Convert avocado tests to normal Python unittests | expand

Commit Message

Thomas Huth July 11, 2024, 11:55 a.m. UTC
From: Ani Sinha <ani@anisinha.ca>

Integrate the pytest framework with the meson build system. This
will make meson run all the pytests under the pytest directory.

Signed-off-by: Ani Sinha <ani@anisinha.ca>
[thuth: Removed the acpi-bits and adjusted for converted avocado tests instead]
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/Makefile.include   |  4 ++-
 tests/meson.build        |  1 +
 tests/pytest/meson.build | 53 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 tests/pytest/meson.build

Comments

Daniel P. Berrangé July 12, 2024, 9:01 a.m. UTC | #1
On Thu, Jul 11, 2024 at 01:55:42PM +0200, Thomas Huth wrote:
> From: Ani Sinha <ani@anisinha.ca>
> 
> Integrate the pytest framework with the meson build system. This
> will make meson run all the pytests under the pytest directory.

Lets add a note about the compelling benefit of this new approach

  With this change, each functional test becomes subject
  to an individual execution timeout, defaulting to 60
  seconds, but overridable per-test.

> 
> Signed-off-by: Ani Sinha <ani@anisinha.ca>
> [thuth: Removed the acpi-bits and adjusted for converted avocado tests instead]
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  tests/Makefile.include   |  4 ++-
>  tests/meson.build        |  1 +
>  tests/pytest/meson.build | 53 ++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 57 insertions(+), 1 deletion(-)
>  create mode 100644 tests/pytest/meson.build

For CI purposes we'll need to add 'python3-pytest' to
tests/lcitool/projects/qemu.yml, and re-generate the
the dockerfiles. Some of the other non-gitlab CI
integrations probably need manual additions of pytest
packages.

> diff --git a/tests/Makefile.include b/tests/Makefile.include
> index d39d5dd6a4..68151717d7 100644
> --- a/tests/Makefile.include
> +++ b/tests/Makefile.include
> @@ -3,12 +3,14 @@
>  .PHONY: check-help
>  check-help:
>  	@echo "Regression testing targets:"
> -	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest and decodetree tests"
> +	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest, pytest and decodetree tests"
>  	@echo " $(MAKE) bench                  Run speed tests"
>  	@echo
>  	@echo "Individual test suites:"
>  	@echo " $(MAKE) check-qtest-TARGET     Run qtest tests for given target"
>  	@echo " $(MAKE) check-qtest            Run qtest tests"
> +	@echo " $(MAKE) check-pytest           Run pytest tests"
> +	@echo " $(MAKE) check-pytest-TARGET    Run pytest for a given target"

Or name it after the type of test rather than harness ?

 eg  check-functional / check-functional-TARGET

For that matter perhaps also for the dir name ?

   tests/functional/*.py

>  	@echo " $(MAKE) check-unit             Run qobject tests"
>  	@echo " $(MAKE) check-qapi-schema      Run QAPI schema tests"
>  	@echo " $(MAKE) check-block            Run block tests"
> diff --git a/tests/meson.build b/tests/meson.build
> index acb6807094..17510a468e 100644
> --- a/tests/meson.build
> +++ b/tests/meson.build
> @@ -85,3 +85,4 @@ subdir('unit')
>  subdir('qapi-schema')
>  subdir('qtest')
>  subdir('migration')
> +subdir('pytest')
> diff --git a/tests/pytest/meson.build b/tests/pytest/meson.build
> new file mode 100644
> index 0000000000..1486628d45
> --- /dev/null
> +++ b/tests/pytest/meson.build
> @@ -0,0 +1,53 @@
> +slow_pytests = {
> +  'mem_addr_space' : 90,
> +}
> +
> +pytests_generic = [
> +  'empty_cpu_model',
> +  'info_usernet',
> +  'version',
> +]
> +
> +pytests_x86_64 = [
> +  'cpu_queries',
> +  'mem_addr_space',
> +  'virtio_version',
> +]
> +
> +pytest = find_program('pytest', required: false)
> +if not pytest.found()
> +  message('pytest not available ==> Disabled the qemu-pytests.')
> +  subdir_done()
> +endif
> +
> +foreach dir : target_dirs
> +  if not dir.endswith('-softmmu')
> +    continue
> +  endif
> +
> +  target_base = dir.split('-')[0]
> +  pytest_emulator = emulators['qemu-system-' + target_base]
> +  target_pytests = get_variable('pytests_' + target_base, []) + pytests_generic
> +
> +  test_deps = roms
> +  pytest_env = environment()
> +  if have_tools
> +    pytest_env.set('PYTEST_QEMU_IMG', './qemu-img')
> +    test_deps += [qemu_img]
> +  endif
> +  pytest_env.set('PYTEST_QEMU_BINARY', meson.global_build_root() / 'qemu-system-' + target_base)
> +  pytest_env.set('PYTEST_SOURCE_ROOT', meson.project_source_root())
> +  pytest_env.set('PYTEST_BUILD_ROOT', meson.project_build_root())
> +  pytest_env.set('PYTHONPATH', meson.project_source_root() / 'python')
> +
> +  foreach test : target_pytests
> +    test('pytest-@0@/@1@'.format(target_base, test),
> +         pytest,
> +         depends: [test_deps, pytest_emulator, emulator_modules],
> +         env: pytest_env,
> +         args: [meson.current_source_dir() / 'test_' + test + '.py'],
> +         timeout: slow_pytests.get(test, 60),
> +         priority: slow_pytests.get(test, 60),
> +         suite: ['pytest', 'pytest-' + target_base])
> +  endforeach
> +endforeach
> -- 
> 2.45.2
> 

With regards,
Daniel
Thomas Huth July 12, 2024, 10:14 a.m. UTC | #2
On 12/07/2024 11.01, Daniel P. Berrangé wrote:
> On Thu, Jul 11, 2024 at 01:55:42PM +0200, Thomas Huth wrote:
>> From: Ani Sinha <ani@anisinha.ca>
>>
>> Integrate the pytest framework with the meson build system. This
>> will make meson run all the pytests under the pytest directory.
> 
> Lets add a note about the compelling benefit of this new approach
> 
>    With this change, each functional test becomes subject
>    to an individual execution timeout, defaulting to 60
>    seconds, but overridable per-test.

The avocado runner uses timeouts, too, so it's not really an additional 
benefit that we get here.

> For CI purposes we'll need to add 'python3-pytest' to
> tests/lcitool/projects/qemu.yml, and re-generate the
> the dockerfiles. Some of the other non-gitlab CI
> integrations probably need manual additions of pytest
> packages.

I'm currently rather looking into getting rid of pytest and to use pycotap 
instead: Using the TAP protocol for running the tests, you get a much nicer 
output from the meson test runner, which can then count the subtests and 
properly report SKIPs for tests that have not been run.

>> diff --git a/tests/Makefile.include b/tests/Makefile.include
>> index d39d5dd6a4..68151717d7 100644
>> --- a/tests/Makefile.include
>> +++ b/tests/Makefile.include
>> @@ -3,12 +3,14 @@
>>   .PHONY: check-help
>>   check-help:
>>   	@echo "Regression testing targets:"
>> -	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest and decodetree tests"
>> +	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest, pytest and decodetree tests"
>>   	@echo " $(MAKE) bench                  Run speed tests"
>>   	@echo
>>   	@echo "Individual test suites:"
>>   	@echo " $(MAKE) check-qtest-TARGET     Run qtest tests for given target"
>>   	@echo " $(MAKE) check-qtest            Run qtest tests"
>> +	@echo " $(MAKE) check-pytest           Run pytest tests"
>> +	@echo " $(MAKE) check-pytest-TARGET    Run pytest for a given target"
> 
> Or name it after the type of test rather than harness ?
> 
>   eg  check-functional / check-functional-TARGET
> 
> For that matter perhaps also for the dir name ?
> 
>     tests/functional/*.py

I almost expected that discussion again ... (see 
https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg06553.html ) ... 
last time we couldn't really agree on such a name and decided to go with the 
name of the framework...

I agree that "pytest" is likely not the best name here, especially if 
switching to the pycotap test runner instead of using the "pytest" program, 
but "functional" might trigger the same discussion again as last time ... 
should it rather be "functional" or "validation" or "integration" etc.?

Maybe best if we come up with a new fictional name for the "new" test 
framework... something like "pyqe" - PYthon-based Qemu test Environment"? 
... could be considered as a play on the word "pike", too, i.e. something 
that makes sure that not everything gets in ... ? WDYT?

  Thomas
Daniel P. Berrangé July 12, 2024, 10:26 a.m. UTC | #3
On Fri, Jul 12, 2024 at 12:14:45PM +0200, Thomas Huth wrote:
> On 12/07/2024 11.01, Daniel P. Berrangé wrote:
> > On Thu, Jul 11, 2024 at 01:55:42PM +0200, Thomas Huth wrote:
> > > From: Ani Sinha <ani@anisinha.ca>
> > > 
> > > Integrate the pytest framework with the meson build system. This
> > > will make meson run all the pytests under the pytest directory.
> > 
> > Lets add a note about the compelling benefit of this new approach
> > 
> >    With this change, each functional test becomes subject
> >    to an individual execution timeout, defaulting to 60
> >    seconds, but overridable per-test.
> 
> The avocado runner uses timeouts, too, so it's not really an additional
> benefit that we get here.

At the meson level though, we can't put an overall cap on
the execution time, as there's only 1 huge test visible,
and thus the meson timeout multiplier also won't get
honoured IIUC.

> 
> > For CI purposes we'll need to add 'python3-pytest' to
> > tests/lcitool/projects/qemu.yml, and re-generate the
> > the dockerfiles. Some of the other non-gitlab CI
> > integrations probably need manual additions of pytest
> > packages.
> 
> I'm currently rather looking into getting rid of pytest and to use pycotap
> instead: Using the TAP protocol for running the tests, you get a much nicer
> output from the meson test runner, which can then count the subtests and
> properly report SKIPs for tests that have not been run.
> 
> > > diff --git a/tests/Makefile.include b/tests/Makefile.include
> > > index d39d5dd6a4..68151717d7 100644
> > > --- a/tests/Makefile.include
> > > +++ b/tests/Makefile.include
> > > @@ -3,12 +3,14 @@
> > >   .PHONY: check-help
> > >   check-help:
> > >   	@echo "Regression testing targets:"
> > > -	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest and decodetree tests"
> > > +	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest, pytest and decodetree tests"
> > >   	@echo " $(MAKE) bench                  Run speed tests"
> > >   	@echo
> > >   	@echo "Individual test suites:"
> > >   	@echo " $(MAKE) check-qtest-TARGET     Run qtest tests for given target"
> > >   	@echo " $(MAKE) check-qtest            Run qtest tests"
> > > +	@echo " $(MAKE) check-pytest           Run pytest tests"
> > > +	@echo " $(MAKE) check-pytest-TARGET    Run pytest for a given target"
> > 
> > Or name it after the type of test rather than harness ?
> > 
> >   eg  check-functional / check-functional-TARGET
> > 
> > For that matter perhaps also for the dir name ?
> > 
> >     tests/functional/*.py
> 
> I almost expected that discussion again ... (see
> https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg06553.html ) ...
> last time we couldn't really agree on such a name and decided to go with the
> name of the framework...
> 
> I agree that "pytest" is likely not the best name here, especially if
> switching to the pycotap test runner instead of using the "pytest" program,
> but "functional" might trigger the same discussion again as last time ...
> should it rather be "functional" or "validation" or "integration" etc.?

IMHO you can just make an executive decision and pick one of those
three. None of them are terrible, any would be a valid choice.

> Maybe best if we come up with a new fictional name for the "new" test
> framework... something like "pyqe" - PYthon-based Qemu test Environment"?
> ... could be considered as a play on the word "pike", too, i.e. something
> that makes sure that not everything gets in ... ? WDYT?

A wierd acronym isn't really going to tell contributors anything about
what this is, compared to calling it 'functional' or 'integration', etc.

With regards,
Daniel
Daniel P. Berrangé July 12, 2024, 11:47 a.m. UTC | #4
On Fri, Jul 12, 2024 at 12:14:45PM +0200, Thomas Huth wrote:
> On 12/07/2024 11.01, Daniel P. Berrangé wrote:
> > On Thu, Jul 11, 2024 at 01:55:42PM +0200, Thomas Huth wrote:
> > > From: Ani Sinha <ani@anisinha.ca>
> > > 
> > > Integrate the pytest framework with the meson build system. This
> > > will make meson run all the pytests under the pytest directory.
> > 
> > Lets add a note about the compelling benefit of this new approach
> > 
> >    With this change, each functional test becomes subject
> >    to an individual execution timeout, defaulting to 60
> >    seconds, but overridable per-test.
> 
> The avocado runner uses timeouts, too, so it's not really an additional
> benefit that we get here.
> 
> > For CI purposes we'll need to add 'python3-pytest' to
> > tests/lcitool/projects/qemu.yml, and re-generate the
> > the dockerfiles. Some of the other non-gitlab CI
> > integrations probably need manual additions of pytest
> > packages.
> 
> I'm currently rather looking into getting rid of pytest and to use pycotap
> instead: Using the TAP protocol for running the tests, you get a much nicer
> output from the meson test runner, which can then count the subtests and
> properly report SKIPs for tests that have not been run.

I've just looked at pycotap and IIUC, there's no command line
tool equivalent to '/usr/bin/pytest' at all. Each test case
is expected to provide a stub for "__main__" to invoke the
tests. As such each individual test is directly executable.
This meshes nicely with what I'd suggested as changes in
patch 1, and eliminating the intermediate runner process is
a nice further simplification. So I'll be interested to see
your next version using pycotap.


With regards,
Daniel
Thomas Huth July 12, 2024, 11:54 a.m. UTC | #5
On 12/07/2024 12.26, Daniel P. Berrangé wrote:
> On Fri, Jul 12, 2024 at 12:14:45PM +0200, Thomas Huth wrote:
>> On 12/07/2024 11.01, Daniel P. Berrangé wrote:
>>> On Thu, Jul 11, 2024 at 01:55:42PM +0200, Thomas Huth wrote:
>>>> From: Ani Sinha <ani@anisinha.ca>
>>>>
>>>> Integrate the pytest framework with the meson build system. This
>>>> will make meson run all the pytests under the pytest directory.
>>>
>>> Lets add a note about the compelling benefit of this new approach
>>>
>>>     With this change, each functional test becomes subject
>>>     to an individual execution timeout, defaulting to 60
>>>     seconds, but overridable per-test.
>>
>> The avocado runner uses timeouts, too, so it's not really an additional
>> benefit that we get here.
> 
> At the meson level though, we can't put an overall cap on
> the execution time, as there's only 1 huge test visible,
> and thus the meson timeout multiplier also won't get
> honoured IIUC.
> 
>>
>>> For CI purposes we'll need to add 'python3-pytest' to
>>> tests/lcitool/projects/qemu.yml, and re-generate the
>>> the dockerfiles. Some of the other non-gitlab CI
>>> integrations probably need manual additions of pytest
>>> packages.
>>
>> I'm currently rather looking into getting rid of pytest and to use pycotap
>> instead: Using the TAP protocol for running the tests, you get a much nicer
>> output from the meson test runner, which can then count the subtests and
>> properly report SKIPs for tests that have not been run.
>>
>>>> diff --git a/tests/Makefile.include b/tests/Makefile.include
>>>> index d39d5dd6a4..68151717d7 100644
>>>> --- a/tests/Makefile.include
>>>> +++ b/tests/Makefile.include
>>>> @@ -3,12 +3,14 @@
>>>>    .PHONY: check-help
>>>>    check-help:
>>>>    	@echo "Regression testing targets:"
>>>> -	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest and decodetree tests"
>>>> +	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest, pytest and decodetree tests"
>>>>    	@echo " $(MAKE) bench                  Run speed tests"
>>>>    	@echo
>>>>    	@echo "Individual test suites:"
>>>>    	@echo " $(MAKE) check-qtest-TARGET     Run qtest tests for given target"
>>>>    	@echo " $(MAKE) check-qtest            Run qtest tests"
>>>> +	@echo " $(MAKE) check-pytest           Run pytest tests"
>>>> +	@echo " $(MAKE) check-pytest-TARGET    Run pytest for a given target"
>>>
>>> Or name it after the type of test rather than harness ?
>>>
>>>    eg  check-functional / check-functional-TARGET
>>>
>>> For that matter perhaps also for the dir name ?
>>>
>>>      tests/functional/*.py
>>
>> I almost expected that discussion again ... (see
>> https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg06553.html ) ...
>> last time we couldn't really agree on such a name and decided to go with the
>> name of the framework...
>>
>> I agree that "pytest" is likely not the best name here, especially if
>> switching to the pycotap test runner instead of using the "pytest" program,
>> but "functional" might trigger the same discussion again as last time ...
>> should it rather be "functional" or "validation" or "integration" etc.?
> 
> IMHO you can just make an executive decision and pick one of those
> three. None of them are terrible, any would be a valid choice.

Ok, I think I'll go with "functional" since that still seems to be the best 
fit to me.

  Thomas
Thomas Huth July 12, 2024, 11:59 a.m. UTC | #6
On 12/07/2024 13.47, Daniel P. Berrangé wrote:
> On Fri, Jul 12, 2024 at 12:14:45PM +0200, Thomas Huth wrote:
>> On 12/07/2024 11.01, Daniel P. Berrangé wrote:
>>> On Thu, Jul 11, 2024 at 01:55:42PM +0200, Thomas Huth wrote:
>>>> From: Ani Sinha <ani@anisinha.ca>
>>>>
>>>> Integrate the pytest framework with the meson build system. This
>>>> will make meson run all the pytests under the pytest directory.
>>>
>>> Lets add a note about the compelling benefit of this new approach
>>>
>>>     With this change, each functional test becomes subject
>>>     to an individual execution timeout, defaulting to 60
>>>     seconds, but overridable per-test.
>>
>> The avocado runner uses timeouts, too, so it's not really an additional
>> benefit that we get here.
>>
>>> For CI purposes we'll need to add 'python3-pytest' to
>>> tests/lcitool/projects/qemu.yml, and re-generate the
>>> the dockerfiles. Some of the other non-gitlab CI
>>> integrations probably need manual additions of pytest
>>> packages.
>>
>> I'm currently rather looking into getting rid of pytest and to use pycotap
>> instead: Using the TAP protocol for running the tests, you get a much nicer
>> output from the meson test runner, which can then count the subtests and
>> properly report SKIPs for tests that have not been run.
> 
> I've just looked at pycotap and IIUC, there's no command line
> tool equivalent to '/usr/bin/pytest' at all. Each test case
> is expected to provide a stub for "__main__" to invoke the
> tests.

With pycotap 1.3.0 you could run tests through "python -m pycotap ...", too. 
But for playing nicely with meson, I'd like to set message_log and 
test_output_log to LogMode.LogToError instead of using their default value, 
so I need my own wrapper code anyway.

> As such each individual test is directly executable.
> This meshes nicely with what I'd suggested as changes in
> patch 1, and eliminating the intermediate runner process is
> a nice further simplification. So I'll be interested to see
> your next version using pycotap.

I'll try to post it as soon as I have something at least in a somewhat more 
proper shape than the RFC ;-)

  Thomas
diff mbox series

Patch

diff --git a/tests/Makefile.include b/tests/Makefile.include
index d39d5dd6a4..68151717d7 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -3,12 +3,14 @@ 
 .PHONY: check-help
 check-help:
 	@echo "Regression testing targets:"
-	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest and decodetree tests"
+	@echo " $(MAKE) check                  Run block, qapi-schema, unit, softfloat, qtest, pytest and decodetree tests"
 	@echo " $(MAKE) bench                  Run speed tests"
 	@echo
 	@echo "Individual test suites:"
 	@echo " $(MAKE) check-qtest-TARGET     Run qtest tests for given target"
 	@echo " $(MAKE) check-qtest            Run qtest tests"
+	@echo " $(MAKE) check-pytest           Run pytest tests"
+	@echo " $(MAKE) check-pytest-TARGET    Run pytest for a given target"
 	@echo " $(MAKE) check-unit             Run qobject tests"
 	@echo " $(MAKE) check-qapi-schema      Run QAPI schema tests"
 	@echo " $(MAKE) check-block            Run block tests"
diff --git a/tests/meson.build b/tests/meson.build
index acb6807094..17510a468e 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -85,3 +85,4 @@  subdir('unit')
 subdir('qapi-schema')
 subdir('qtest')
 subdir('migration')
+subdir('pytest')
diff --git a/tests/pytest/meson.build b/tests/pytest/meson.build
new file mode 100644
index 0000000000..1486628d45
--- /dev/null
+++ b/tests/pytest/meson.build
@@ -0,0 +1,53 @@ 
+slow_pytests = {
+  'mem_addr_space' : 90,
+}
+
+pytests_generic = [
+  'empty_cpu_model',
+  'info_usernet',
+  'version',
+]
+
+pytests_x86_64 = [
+  'cpu_queries',
+  'mem_addr_space',
+  'virtio_version',
+]
+
+pytest = find_program('pytest', required: false)
+if not pytest.found()
+  message('pytest not available ==> Disabled the qemu-pytests.')
+  subdir_done()
+endif
+
+foreach dir : target_dirs
+  if not dir.endswith('-softmmu')
+    continue
+  endif
+
+  target_base = dir.split('-')[0]
+  pytest_emulator = emulators['qemu-system-' + target_base]
+  target_pytests = get_variable('pytests_' + target_base, []) + pytests_generic
+
+  test_deps = roms
+  pytest_env = environment()
+  if have_tools
+    pytest_env.set('PYTEST_QEMU_IMG', './qemu-img')
+    test_deps += [qemu_img]
+  endif
+  pytest_env.set('PYTEST_QEMU_BINARY', meson.global_build_root() / 'qemu-system-' + target_base)
+  pytest_env.set('PYTEST_SOURCE_ROOT', meson.project_source_root())
+  pytest_env.set('PYTEST_BUILD_ROOT', meson.project_build_root())
+  pytest_env.set('PYTHONPATH', meson.project_source_root() / 'python')
+
+  foreach test : target_pytests
+    test('pytest-@0@/@1@'.format(target_base, test),
+         pytest,
+         depends: [test_deps, pytest_emulator, emulator_modules],
+         env: pytest_env,
+         args: [meson.current_source_dir() / 'test_' + test + '.py'],
+         timeout: slow_pytests.get(test, 60),
+         priority: slow_pytests.get(test, 60),
+         suite: ['pytest', 'pytest-' + target_base])
+  endforeach
+endforeach