如何在运行时访问pytest测试的总体测试结果？

Question

根据pytest测试运行的总体测试结果，我要执行条件拆卸。这意味着必须在执行完所有测试之后但离开测试运行程序之前，才能访问总体测试结果。我该如何实现？

Answer 1

我找不到合适的pytest挂钩来访问总体测试结果。

你不需要一个 自己收集测试结果。这是我需要批量访问测试结果时通常使用的蓝图：

# conftest.py
import pytest


def pytest_sessionstart(session):
    session.results = dict()


@pytest.hookimpl(tryfirst=True, hookwrapper=True)
def pytest_runtest_makereport(item, call):
    outcome = yield
    result = outcome.get_result()

    if result.when == 'call':
        item.session.results[item] = result

现在所有测试结果都存储在session.resultsdict下；用法示例：

# conftest.py (continued)

def pytest_sessionfinish(session, exitstatus):
    print()
    print('run status code:', exitstatus)
    passed_amount = sum(1 for result in session.results.values() if result.passed)
    failed_amount = sum(1 for result in session.results.values() if result.failed)
    print(f'there are {passed_amount} passed and {failed_amount} failed tests')

运行测试将产生：

$ pytest -sv
================================== test session starts ====================================
platform darwin -- Python 3.6.4, pytest-3.7.1, py-1.5.3, pluggy-0.7.1 -- /Users/hoefling/.virtualenvs/stackoverflow/bin/python3.6
cachedir: .pytest_cache
rootdir: /Users/hoefling/projects/private/stackoverflow/so-51711988, inifile:
collected 3 items

test_spam.py::test_spam PASSED
test_spam.py::test_eggs PASSED
test_spam.py::test_fail FAILED
run status code: 1
there are 2 passed and 1 failed tests


======================================== FAILURES =========================================
_______________________________________ test_fail _________________________________________

    def test_fail():
>       assert False
E       assert False

test_spam.py:10: AssertionError
=========================== 1 failed, 2 passed in 0.05 seconds ============================

编辑：

如果总体pytest退出代码（exitstatus）是足够的信息（有关＃通过，＃失败等信息，则不是必需的），请使用以下代码：

# conftest.py

def pytest_sessionfinish(session, exitstatus):
    print()
    print('run status code:', exitstatus)