[TIP] pytest

[James]

Great, thanks.


On 2016-10-17 11:00 AM, Bruno Oliveira wrote:
>
> On Mon, Oct 17, 2016 at 11:42 AM James bjlockie at lockie.ca 
> <http://mailto:bjlockie@lockie.ca> wrote:
>
>     Is it possible to skip all the tests within a class without having
>     to pass "a" into all the functions?
>
> You can use the |usefixtures| marker on the class:
>
> |@pytest.mark.usefixtures('a') class Test: def test_foo(self): pass |
>
> Cheers,
> Bruno.
>
>     On 2016-10-16 12:56 AM, Bruno Oliveira wrote:
>>
>>     Hi James,
>>
>>     What error do you get? From your example it is missing a |self|
>>     argument, otherwise it should work just fine.
>>
>>     Cheers,
>>     Bruno.
>>
>>     ​
>>
>>     On Sat, Oct 15, 2016 at 11:03 AM James <bjlockie at lockie.ca
>>     <mailto:bjlockie at lockie.ca>> wrote:
>>
>>         I tried to make it work with a class:
>>
>>         import pytest
>>
>>         # testscript.py
>>         class TestAclasss:
>>
>>
>>             def test_foo(a):
>>                 assert a == '1'
>>
>>         Do I need to do something in the __init__ function?
>>
>>
>>
>>
>>         On 2016-10-14 02:50 PM, Bruno Oliveira wrote:
>>>
>>>         Hi James,
>>>
>>>         Thanks for posting the complete example.
>>>
>>>         There are some problems here, both general Python problems
>>>         and some related to how you are using pytest:
>>>
>>>          1. |testscript.py| has no access to the |A| function
>>>             because it doesn’t import it.
>>>          2. You probably want to declare your fixture in a
>>>             |conftest.py| file so pytest can make it available for
>>>             all tests in your test suite.
>>>          3. You have to first declare your option using the
>>>             |pytest_addoption| hook.
>>>          4. Since you intend to provide the value passed in the
>>>             command line to the tests using a fixture, it is simpler
>>>             to skip the test in the fixture itself.
>>>
>>>         Here’s the full example with my suggestions:
>>>
>>>         |# conftest.py import pytest @pytest.fixture(scope='module')
>>>         def a(request): value = request.config.getoption("A") if not
>>>         value: pytest.skip('test needs -A option to run') return
>>>         value def pytest_addoption(parser): parser.addoption("--A",
>>>         action="store", default=None, help="a option") #
>>>         testscript.py def test_foo(a): assert a == '1' |
>>>
>>>         Running it:
>>>
>>>         |$ py.test testscript.py -q s 1 skipped in 0.01 seconds $
>>>         py.test testscript.py -q --A 1 . 1 passed in 0.01 seconds $
>>>         py.test testscript.py -q --A 2 F
>>>         ================================== FAILURES
>>>         ===================================
>>>         __________________________________ test_foo
>>>         ___________________________________ a = '2' def test_foo(a):
>>>         > assert a == '1' E assert '2' == '1' E - 2 E + 1
>>>         testscript.py:6: AssertionError 1 failed in 0.07 seconds |
>>>
>>>         Hope that helps,
>>>         Bruno.
>>>
>>>         ​
>>>
>>>
>>>         On Fri, Oct 14, 2016 at 3:07 PM James <bjlockie at lockie.ca
>>>         <mailto:bjlockie at lockie.ca>> wrote:
>>>
>>>
>>>             Here is the exact code:
>>>             $ cat testconfig.py
>>>             import pytest
>>>
>>>
>>>             @pytest.fixture(scope='module')
>>>             def A(request):
>>>                 return request.config.getoption("--A")
>>>
>>>             $ cat testscript.py
>>>             import pytest
>>>
>>>
>>>             skip_A = pytest.mark.skipif(
>>>                 A(pytest.config.request),
>>>                 reason="need --A option to run"
>>>             )
>>>
>>>
>>>             $ py.test testscript.py
>>>             ============================= test session starts
>>>             ==============================
>>>             platform linux2 -- Python 2.7.12, pytest-2.8.7,
>>>             py-1.4.31, pluggy-0.3.1
>>>             rootdir: /home/rjl/pytest, inifile:
>>>             collected 0 items / 1 errors
>>>
>>>             ==================================== ERRORS
>>>             ====================================
>>>             ________________________ ERROR collecting testscript.py
>>>             ________________________
>>>             testscript.py:4: in <module>
>>>                 A(pytest.config.request),
>>>
>>>             E   NameError: name 'A' is not defined
>>>             =========================== 1 error in 0.01 seconds
>>>             ============================
>>>
>>>             Instead of doing
>>>             pytest.config.getoptionmore than one like this:
>>>             skip_A = pytest.mark.skipif(
>>>             pytest.config.getoption("--A"), reason="need --A option
>>>             to run" )
>>>             I want to do it once in the config file.
>>>             I might want to use the value of the argument --A
>>>             elsewhere so I don't want to do getoption many times.
>>>
>>>
>>>             On 2016-10-14 01:16 PM, Bruno Oliveira wrote:
>>>>
>>>>             Hi,
>>>>
>>>>             After fixing the missing “pytest” import, I get this error:
>>>>
>>>>             |foo.py:8: in <module> A(pytest.config.request), E
>>>>             AttributeError: 'Config' object has no attribute
>>>>             'request' |
>>>>
>>>>             Please make sure to post a complete example and state
>>>>             clearly what your problem is and what you are trying to
>>>>             accomplish.
>>>>
>>>>             Cheers,
>>>>             Bruno.
>>>>
>>>>             ​
>>>>
>>>>             On Fri, Oct 14, 2016 at 2:03 PM James
>>>>             <bjlockie at lockie.ca <mailto:bjlockie at lockie.ca>> wrote:
>>>>
>>>>                 I have this in my config file:
>>>>                 @pytest.fixture(scope='module')
>>>>                 def A(request):
>>>>                     return request.config.getoption("--A")
>>>>
>>>>                 skip_A = pytest.mark.skipif(
>>>>                 A(pytest.config.request),
>>>>                     reason="need --A option to run"
>>>>                 )
>>>>
>>>>                 but when I run it, it says
>>>>                 E   NameError: name 'A' is not defined
>>>>
>>>>                 _______________________________________________
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>>>>
>>>
>>
>
> ​

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