Question

我有更好的方法为参数pytest.fixture函数提供默认值吗？

我有几个测试用例需要在testcase之前运行fixture_func，如果没有提供，我想在fixture中使用参数的默认值。我能想出的唯一代码如下。我有更好的方法吗？

@pytest.fixture(scope="function")
def fixture_func(self, request):
    argA = request.param['argA'] if request.param.get('argA', None) else 'default value for argA'
    argB = request.param['argB'] if request.param.get('argB', None) else 'default value for argB'
    # do something with fixture

@pytest.mark.parametrize('fixture_func', [dict(argA='argA')], indirect=['fixture_func'])
def test_case_1(self, fixture_func):
    #do something under testcase
    pass

@pytest.mark.parametrize('fixture_func', [dict()], indirect=['fixture_func'])
def test_case_2(self, fixture_func):
    #do something under testcase
    pass

我想用作

def test_case_3(self, fixture_func):
    #do something under testcase
    pass

Answer 1

None是默认结果

request.param.get('argA', None)

所以，你可以：

argA = request.param.get('argA', 'default value for argA')

Answer 2

将参数添加到您的装置：

@pytest.fixture(scope='function', params=[{'arg1': 'default'}, {'arg2': 'default'}])
def my_fixture(request):
    return request.param['arg1'] + request.param['arg1']

为py.test fixture函数提供默认参数值

2 个答案: