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Pytest----如何打开或关闭实时日志和捕获日志
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作者:redrose2100 类别: 日期:2022-12-05 09:23:19 阅读:889 次 消耗积分:0 分
[TOC] ![](https://redrose2100.oss-cn-hangzhou.aliyuncs.com/img/7cd47362-951c-11ee-986a-0242ac110004.png) Pytest中默认情况下实时日志是关闭的,捕获日志是打开的,因此这里主要介绍如何打开实时日志以及关闭捕获日志。 比如如下脚本: ```python import logging def test_demo(): logging.warning("this is warning log ...") logging.error("this is error log ...") logging.critical("this is critical log ...") assert 1==1 ``` 开启实时日志有两种方式,一种是通过命令行,pytest –o log_cli=true,如下所示: ```bash (demo-HCIhX0Hq) E:\demo>pytest -o log_cli=true =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py::test_demo ---------------------- live log call ---------------------- WARNING root:test_demo.py:4 this is warning log ... ERROR root:test_demo.py:5 this is error log ... CRITICAL root:test_demo.py:6 this is critical log ... PASSED [100%] ==================== 1 passed in 0.02s ==================== (demo-HCIhX0Hq) E:\demo> ``` 在命令行中打开实时日志是比较繁琐的,因此另外一种方式就是在pytest.ini文件中配置。创建pytest.ini文件,然后写入如下配置即可打开实时日志。 ```bash [pytest] log_cli = True ``` 此时直接使用pytest命令即可显示实时日志了。如下所示。 ```bash (demo-HCIhX0Hq) E:\demo>pytest =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo, configfile: pytest.ini plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py::test_demo ---------------------- live log call ---------------------- WARNING root:test_demo.py:4 this is warning log ... ERROR root:test_demo.py:5 this is error log ... CRITICAL root:test_demo.py:6 this is critical log ... PASSED [100%] ==================== 1 passed in 0.02s ==================== (demo-HCIhX0Hq) E:\demo> ``` 当不设置日志级别时,默认情况下也是warning,即warning及以上的级别日志才会显示,info和debug日志在默认情况下是不会显示的,比如在测试脚本中增加info和debug的日志。 ```python import logging def test_demo(): logging.debug("this is debug log ...") logging.info("this is info log ...") logging.warning("this is warning log ...") logging.error("this is error log ...") logging.critical("this is critical log ...") assert 1==1 ``` 执行结果如下,可以看到此时info和debug日志是未显示的。 ```bash (demo-HCIhX0Hq) E:\demo>pytest =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo, configfile: pytest.ini plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py::test_demo ---------------------- live log call ---------------------- WARNING root:test_demo.py:6 this is warning log ... ERROR root:test_demo.py:7 this is error log ... CRITICAL root:test_demo.py:8 this is critical log ... PASSED [100%] ==================== 1 passed in 0.02s ==================== (demo-HCIhX0Hq) E:\demo> ``` 在pytest.ini中开启实时日志的同时,可以同时将日志级别以及日志格式同步设置一下,不如pytest.ini设置如下配置。 ```bash [pytest] log_cli = True log_cli_level = debug log_cli_format = %(asctime)s %(levelname)s %(message)s log_cli_date_format = %Y-%m-%d %H:%M:%S ``` 此时再次执行,即debug和info日志此时均显示出来了,而且每行日志同时带有时间戳、日志级别、日志内容了。 ```bash (demo-HCIhX0Hq) E:\demo>pytest =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo, configfile: pytest.ini plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py::test_demo ---------------------- live log call ---------------------- 2022-12-05 16:22:17 DEBUG this is debug log ... 2022-12-05 16:22:17 INFO this is info log ... 2022-12-05 16:22:17 WARNING this is warning log ... 2022-12-05 16:22:17 ERROR this is error log ... 2022-12-05 16:22:17 CRITICAL this is critical log ... PASSED [100%] ==================== 1 passed in 0.02s ==================== (demo-HCIhX0Hq) E:\demo> ``` 捕获日志默认情况下是开启的,即当用例失败时就会自动显示捕获的日志了,比如如下将测试用例修改为失败。 ```python import logging def test_demo(): logging.debug("this is debug log ...") logging.info("this is info log ...") logging.warning("this is warning log ...") logging.error("this is error log ...") logging.critical("this is critical log ...") assert 1==2 ``` 执行结果如下,即用例失败后显示了Captured log call即捕获日志。 ```bash (demo-HCIhX0Hq) E:\demo>pytest =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo, configfile: pytest.ini plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py::test_demo ---------------------- live log call ---------------------- 2022-12-05 16:28:59 DEBUG this is debug log ... 2022-12-05 16:28:59 INFO this is info log ... 2022-12-05 16:28:59 WARNING this is warning log ... 2022-12-05 16:28:59 ERROR this is error log ... 2022-12-05 16:28:59 CRITICAL this is critical log ... FAILED [100%] ======================== FAILURES ========================= ________________________ test_demo ________________________ def test_demo(): logging.debug("this is debug log ...") logging.info("this is info log ...") logging.warning("this is warning log ...") logging.error("this is error log ...") logging.critical("this is critical log ...") > assert 1==2 E assert 1 == 2 test_demo.py:9: AssertionError -------------------- Captured log call -------------------- DEBUG root:test_demo.py:4 this is debug log ... INFO root:test_demo.py:5 this is info log ... WARNING root:test_demo.py:6 this is warning log ... ERROR root:test_demo.py:7 this is error log ... CRITICAL root:test_demo.py:8 this is critical log ... ================= short test summary info ================= FAILED test_demo.py::test_demo - assert 1 == 2 ==================== 1 failed in 0.08s ==================== (demo-HCIhX0Hq) E:\demo> ``` 捕获日志pytest默认是打开的,这里顺便也提一下,对于捕获日志,也是可以通过在pytest.ini中配置日志级别、时间戳、格式等的,而且捕获日志配置与实时日志配置关键字是不一样的,需要注意分开,如下为配置捕获日志格式的。 ```bash [pytest] log_level = debug log_format = %(asctime)s %(levelname)s %(message)s log_date_format = %Y-%m-%d %H:%M:%S 执行结果如下,可以看到此时捕获日志已经将debug和info级别的日志显示出来了,并且也带有时间戳和日志级别的信息。 (demo-HCIhX0Hq) E:\demo>pytest =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo, configfile: pytest.ini plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py F [100%] ======================== FAILURES ========================= ________________________ test_demo ________________________ def test_demo(): logging.debug("this is debug log ...") logging.info("this is info log ...") logging.warning("this is warning log ...") logging.error("this is error log ...") logging.critical("this is critical log ...") > assert 1==2 E assert 1 == 2 test_demo.py:9: AssertionError -------------------- Captured log call -------------------- 2022-12-05 17:12:33 DEBUG this is debug log ... 2022-12-05 17:12:33 INFO this is info log ... 2022-12-05 17:12:33 WARNING this is warning log ... 2022-12-05 17:12:33 ERROR this is error log ... 2022-12-05 17:12:33 CRITICAL this is critical log ... ================= short test summary info ================= FAILED test_demo.py::test_demo - assert 1 == 2 ==================== 1 failed in 0.08s ==================== (demo-HCIhX0Hq) E:\demo> ``` 而若想关闭捕获日志,则只需要使用--show-capture=no 参数即可,比如如下,可以看到,此时即没有捕获日志显示了,但是在实际应用中,一般不需要将捕获日志关闭,因为在默认用例通过时捕获日志就是不显示的,而当用例失败时,此时正是需要查看捕获日志的,因此对于捕获日志一般保持默认打开即可,需要做的就是去设置一下日志打印的格式等。 ```bash (demo-HCIhX0Hq) E:\demo>pytest --show-capture=no =================== test session starts =================== platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0 rootdir: E:\demo, configfile: pytest.ini plugins: assume-2.4.3, rerunfailures-10.2 collected 1 item test_demo.py F [100%] ======================== FAILURES ========================= ________________________ test_demo ________________________ def test_demo(): logging.debug("this is debug log ...") logging.info("this is info log ...") logging.warning("this is warning log ...") logging.error("this is error log ...") logging.critical("this is critical log ...") > assert 1==2 E assert 1 == 2 test_demo.py:9: AssertionError ================= short test summary info ================= FAILED test_demo.py::test_demo - assert 1 == 2 ==================== 1 failed in 0.07s ==================== (demo-HCIhX0Hq) E:\demo> ```
始终坚持开源开放共享精神,同时感谢您的充电鼓励和支持!
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