Question

我正在尝试用selenium编写py.test测试来测试复杂的网站。由于设置很复杂，因此即使在实际测试之前测试也会失败。但在这种情况下，我希望能够调用一个'debug'函数（可能是一个teardown函数，我可以使用它来调试东西。

示例：

测试使用一个返回硒webdriver的夹具

def test1(driver):
    driver.get("my page")
    ...
    other tests, login, etc etc

但现在呼叫driver.get因任何原因而失败。但在这种情况下，我希望能够调查像

这样的事情

def debug(driver):
    driver.screenshot(...)
    print(driver.page_source)
    ...
    driver.quit()

（包括关闭驱动程序，因为浏览器将保持打开状态）与测试方法中使用的driver实例相同。

有办法吗？

Answer 1

最棘手的部分是将测试结果传递到夹具中，其余部分非常简单。在pytest示例Making test result information available in fixtures之后，在conftest.py中添加自定义摘要：

import pytest

@pytest.hookimpl(hookwrapper=True, tryfirst=True)
def pytest_runtest_makereport(item, call):
    outcome = yield
    rep = outcome.get_result()
    setattr(item, "rep_" + rep.when, rep)
    return rep

现在，您可以使用自定义拆卸逻辑增强driver夹具，以防测试失败：

# test_selenium.py

import pytest
from selenium import webdriver

def debug(driver):
    print('debug: ', driver.title)

@pytest.fixture
def driver(request):
    driver = webdriver.Firefox()
    yield driver
    if request.node.rep_setup.passed and request.node.rep_call.failed:
        # this is the teardown code executed on test failure only
        debug(driver)
    # this is the teardown code that is always executed
    driver.quit()


def test_fail(driver):
    driver.get('http://wtf')


def test_ok(driver):
    driver.get('https://www.google.de')

运行测试产生：

$ pytest -sv
=============================== test session starts ===============================
platform darwin -- Python 3.6.3, ...
cachedir: .cache
rootdir: /Users/hoefling/projects/private/stackoverflow/so-48521762, inifile:
plugins: ...
collecting ... collected 2 items

test_spam.py::test_fail FAILED                                              [ 50%]
debug Server Not Found

test_spam.py::test_ok PASSED                                                [100%]

==================================== FAILURES =====================================
____________________________________ test_fail ____________________________________

driver = <selenium.webdriver.firefox.webdriver.WebDriver( ...
...
------------------------------- Captured log setup --------------------------------
remote_connection.py       474 DEBUG    POST http://127.0.0.1:50319/session { ...
...
remote_connection.py       561 DEBUG    Finished Request
======================== 1 failed, 1 passed in 7.23 seconds =======================

如果发生故障，如何在py.test中调用'debug'方法？

1 个答案: