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import pytest | |
def params(n): | |
fn = range(n) | |
return {'name': 'a', 'args': fn, 'ids': ['a: {}'.format(i) for i in fn]} | |
named_args = params(3) | |
@pytest.mark.parametrize( | |
named_args['name'], named_args['args'], ids=named_args['ids']) | |
def test_funcs_with_naming_func(a): | |
assert a ** 3 == a * (a ** 2) | |
############################################################################### | |
## Our parametrize wrapper: | |
def myparametrize(argnames, argvalues): | |
def fmt(ns, vs): | |
return ', '.join('{}: {}'.format(n, v) for n, v in zip(ns, vs)) | |
return pytest.mark.parametrize(argnames, argvalues, | |
ids=[fmt(argnames, vs) for vs in argvalues]) | |
# As you can see, the single argument case looks a bit pathological, | |
# as pytest.mark.parametrize is doing extra work that we are no longer | |
# taking advantage of. But I assume this is not the usual case so it may not matter. | |
@myparametrize(('a',), [(0,), (1,), (2,)]) | |
def test_func_with_myparametrize(a): | |
pass | |
@myparametrize(('a','b','c'), [(1, 2, 3), (10, 20, 30)]) | |
def test_more_complicated_example(a, b, c): | |
pass |
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$ py.test testing/test_foo.py --collectonly | |
============================================================================================ test session starts ============================================================================================ | |
platform linux2 -- Python 2.7.6 -- py-1.4.26 -- pytest-2.6.4 | |
collected 8 items | |
<Module 'testing/test_foo.py'> | |
<Function 'test_funcs_with_naming_func[a: 0]'> | |
<Function 'test_funcs_with_naming_func[a: 1]'> | |
<Function 'test_funcs_with_naming_func[a: 2]'> | |
<Function 'test_func_with_myparametrize[a: 0]'> | |
<Function 'test_func_with_myparametrize[a: 1]'> | |
<Function 'test_func_with_myparametrize[a: 2]'> | |
<Function 'test_more_complicated_example[a: 1, b: 2, c: 3]'> | |
<Function 'test_more_complicated_example[a: 10, b: 20, c: 30]'> |
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