在函数外的模块中使用 pytest 变量

Question

我正在使用Pytest and Pytest-variables with parametrized test functions to try and reduce duplication of code across test cases. I have this working with hard-coded strings within the test module: similar to this；但是，我不知道如何从函数范围之外的变量文件中导入变量。非常感谢任何帮助，我知道使用 pytest-variables 可能无法做到这一点，但我想在此处 post 以确保我没有遗漏任何东西。

工作代码

import pytest

account_email_field = [
     ['test@google.com', 'Site Title', True],
     ['', '', False ],
     ['test@google.com', '', False ],
     ['', 'Default Title', False]
]

@pytest.fixture(params=account_email_field)
def email_field(request):
    return [request.param[0], request.param[1], request.param[2]]

def test_sample_spage(email_field):
    return [email_field[0], email_field[1], email_field[2]]

None 工作代码，但我想要的例子。

import pytest

account_email_field = [
     [variables['sample_email'], variables['site_title'], True],
     [variables['empty'], variables['empty'], False ],
     [variables['sample_email'], variables['empty'], False ],
     [variables['empty'], variables['site_title'], False]
]

@pytest.fixture(params=account_email_field)
def email_field(request):
    return [request.param[0], request.param[1], request.param[2]]

def test_sample_spage(email_field):
    return [email_field[0], email_field[1], email_field[2]]

Answer 1

我会使用静态 class 而不是字典进行查找，因为它更 IDE 友好。在文件 constants.py（或其他名称）

中

class variables:
    sample_email = 'test@google.com'
    site_title = 'Site Title'
    empty = ''

然后在测试文件中你可以

from constants import variables as var

account_email_field = [
     [var.sample_email, var.site_title, True  ],
     [var.empty,        var.empty,      False ],
     [var.sample_email, var.empty,      False ],
     [var.empty,        var.site_title, False ],
]

希望对您有所帮助！

Answer 2

pytest-variables 插件将变量存储在配置对象中，因此您可以从 pytest_generate_tests 挂钩访问它。

给定以下 variables.json 文件：

{
  "data": [
    ["test@google.com", "Site Title", true],
    ["", "Default Title", false]
  ]
}

使用以下 test_param_vars.py 文件：

def pytest_generate_tests(metafunc):
    if 'data' in metafunc.fixturenames:
        metafunc.parametrize('data', metafunc.config._variables['data'])

def test_variables(data):
    assert data[0]

您应该得到类似于以下内容的输出：

$ pytest test_param_variables.py --variables=variables.json -ra -s
======================= test session starts ========================
platform darwin -- Python 3.6.4, pytest-3.4.2, py-1.5.2, pluggy-0.6.0
rootdir: /Users/dhunt/workspace/pytest-scratchpad, inifile:
plugins: variables-1.7.1
collected 2 items

test_param_variables.py .F
===================== short test summary info ======================
FAIL test_param_variables.py::test_variables[data1]

============================= FAILURES =============================
______________________ test_variables[data1] _______________________

data = ['', 'Default Title', False]

    def test_variables(data):
>       assert data[0]
E       AssertionError: assert ''

test_param_variables.py:6: AssertionError
================ 1 failed, 1 passed in 0.04 seconds ================

在函数外的模块中使用 pytest 变量

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python-3.x

pytest-selenium