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1 pytest学习笔记 - 1.1 运行pytest

1.1 运行pyest

  在命令行执行pytest --help

usage: pytest [options] [file_or_dir] [file_or_dir] [...]
... ...

1.1.1 pytest不携带参数

  pytest不带参数时，会扫描当前目录下的所有目录、子目录中符合测试用例标准的文件(test_*.py, *_test.py)，并执行这些文件。

1.1.2 pytest携带文件名、目录、或者文件列表、目录列表

• 携带文件名：执行指定文件名中的测试用例(函数名满足test_...)。
• 携带目录名：执行指定目录中的所有测试文件中的所有测试用例(文件名满足：test_....py或..._test.py)。
• 携带文件列表：执行文件列表中所有文件中的所有测试用例。
• 携带目录列表：执行指定目录列表中的所有测试文件中的所有用例(会递归扫描所有子目录)。

1.2 实战案例

1.2.1 样例1：命名元组对象测试-1

执行命令： pytest -sv test_ch1_001.py

# ---------------------------------------------------------------------------
# @file       test_ch1_001.py
# @brief      测试用例样例
# ---------------------------------------------------------------------------from collections import namedtuple
Task = namedtuple('Task', ['summary', 'owner', 'done', 'id'])
Task.__new__.__defaults__ = (None, None, False, None)def test_defaults():"""Using no parameters should invoke defaults."""t1 = Task()t2 = Task(None, None, False, None) assert t1 == t2def test_member_access():"""Check .field functionality of namedtuple."""t = Task('buy milk', 'brian')assert t.summary == 'buy milk'assert t.owner == 'brian'assert (t.done, t.id) == (False, None)

输出报文：

============================= test session starts =============================
platform win32 -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0 -- C:\Program Files\Python313\python.exe
cachedir: .pytest_cache
metadata: {'Python': '3.13.1', 'Platform': 'Windows-10-10.0.19045-SP0', 'Packages': {'pytest': '8.3.4', 'pluggy': '1.5.0'}, 'Plugins': {'check': '2.4.1', 'html': '4.1.1', 'metadata': '3.1.1', 'timeout': '2.3.1', 'xdist': '3.6.1'}}
rootdir: D:\TYYSOFT\Study\Python\pytest
configfile: pytest.ini
plugins: check-2.4.1, html-4.1.1, metadata-3.1.1, timeout-2.3.1, xdist-3.6.1
collecting ... collected 2 itemstest_ch1_001.py::test_defaults PASSED
test_ch1_001.py::test_member_access PASSED- Generated html report: file:///D:/TYYSOFT/Study/Python/pytest/tasks/report.html -
============================== 2 passed in 0.03s ==============================

1.2.2 样例2：命名元组对象测试-2

执行命令：pytest -sv test_ch1_002.py

# ---------------------------------------------------------------------------
# @file       test_ch1_002.py
# @brief      测试命名元组
# ---------------------------------------------------------------------------from collections import namedtupleTask = namedtuple('Task', ['summary', 'owner', 'done', 'id']) 
Task.__new__.__defaults__ = (None, None, False, None)def test_asdict():"""_asdict() should return a dictionary."""t_task = Task('do something', 'okken', True, 21) t_dict = t_task._asdict()expected = {'summary': 'do something','owner': 'okken', 'done': True, 'id': 21}assert t_dict == expecteddef test_replace():"""replace() should change passed in fields."""t_before = Task('finish book', 'brian', False) t_after = t_before._replace(id=10, done=True) t_expected = Task('finish book', 'brian', True, 10) assert t_after == t_expected

输出结果：

============================= test session starts =============================
platform win32 -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0 -- C:\Program Files\Python313\python.exe
cachedir: .pytest_cache
metadata: {'Python': '3.13.1', 'Platform': 'Windows-10-10.0.19045-SP0', 'Packages': {'pytest': '8.3.4', 'pluggy': '1.5.0'}, 'Plugins': {'check': '2.4.1', 'html': '4.1.1', 'metadata': '3.1.1', 'timeout': '2.3.1', 'xdist': '3.6.1'}}
rootdir: D:\TYYSOFT\Study\Python\pytest
configfile: pytest.ini
plugins: check-2.4.1, html-4.1.1, metadata-3.1.1, timeout-2.3.1, xdist-3.6.1
collecting ... collected 2 itemstest_ch1_002.py::test_asdict PASSED
test_ch1_002.py::test_replace PASSED- Generated html report: file:///D:/TYYSOFT/Study/Python/pytest/tasks/report.html -
============================== 2 passed in 0.03s ==============================

1.2.3 样例3：运行文件列表

执行命令

 pytest test_ch1_001.py test_ch1_002.py
======================================= test session starts =======================================
platform win32 -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0
rootdir: D:\TYYSOFT\Study\Python\pytest
configfile: pytest.ini
plugins: check-2.4.1, html-4.1.1, metadata-3.1.1, timeout-2.3.1, xdist-3.6.1
collected 4 itemstest_ch1_001.py ..                                                                           [ 50%]
test_ch1_002.py ..                                                                           [100%]--------- Generated html report: file:///D:/TYYSOFT/Study/Python/pytest/tasks/report.html ---------
======================================== 4 passed in 0.03s ========================================

注：其他种运行方式，读者可以自行尝试。

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