sup*_*tor 66 python logging pytest
我想在测试函数中放入一些日志语句来检查一些状态变量.
我有以下代码片段:
import pytest,os
import logging
logging.basicConfig(level=logging.DEBUG)
mylogger = logging.getLogger()
#############################################################################
def setup_module(module):
''' Setup for the entire module '''
mylogger.info('Inside Setup')
# Do the actual setup stuff here
pass
def setup_function(func):
''' Setup for test functions '''
if func == test_one:
mylogger.info(' Hurray !!')
def test_one():
''' Test One '''
mylogger.info('Inside Test 1')
#assert 0 == 1
pass
def test_two():
''' Test Two '''
mylogger.info('Inside Test 2')
pass
if __name__ == '__main__':
mylogger.info(' About to start the tests ')
pytest.main(args=[os.path.abspath(__file__)])
mylogger.info(' Done executing the tests ')
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我得到以下输出:
[bmaryada-mbp:/Users/bmaryada/dev/platform/main/proto/tests/tpch $]python minitest.py
INFO:root: About to start the tests
======================================================== test session starts =========================================================
platform darwin -- Python 2.6.2 -- pytest-2.0.0
collected 2 items
minitest.py ..
====================================================== 2 passed in 0.01 seconds ======================================================
INFO:root: Done executing the tests
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请注意,只有来自'__name__ == __main__'块的日志消息才会传输到控制台.
有没有办法强制pytest从测试方法发出日志记录到控制台?
hoe*_*ing 64
从版本3.3开始,pytest支持实时日志记录,这意味着测试中发出的所有日志记录将立即打印到终端.该功能记录在" 实时日志"部分下.默认情况下禁用实时记录; 启用它,log_cli = 1在pytest.ini配置中设置.实时记录支持发送到终端和文件; 相关选项允许记录自定义:
log_cli_levellog_cli_formatlog_cli_date_formatlog_filelog_file_levellog_file_formatlog_file_date_format注意:正如KévinBarré在本评论中指出的那样,可以通过log_cliflag不能从命令行传递,必须在pytest.ini(或-o/--override)中设置.所有其他选项既可以从命令行传递,也可以在配置文件中设置.log_cli选项覆盖命令行中的ini 选项.因此,您可以简单地调用:而不是pytest.ini在pytest/ 中声明pytest.ini:
$ pytest -o log_cli=true ...
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用于演示的简单测试文件:
# test_spam.py
import logging
LOGGER = logging.getLogger(__name__)
def test_eggs():
LOGGER.info('eggs info')
LOGGER.warning('eggs warning')
LOGGER.error('eggs error')
LOGGER.critical('eggs critical')
assert True
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如您所见,无需额外配置; INFO将根据pytest.ini命令行中指定或传递的选项自动设置记录器.
CRITICAL级别,花式输出配置在pytest.log:
[pytest]
log_cli = 1
log_cli_level = INFO
log_cli_format = %(asctime)s [%(levelname)8s] %(message)s (%(filename)s:%(lineno)s)
log_cli_date_format=%Y-%m-%d %H:%M:%S
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运行测试:
$ pytest test_spam.py
=============================== test session starts ================================
platform darwin -- Python 3.6.4, pytest-3.7.0, 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-4673373, inifile: pytest.ini
collected 1 item
test_spam.py::test_eggs
---------------------------------- live log call -----------------------------------
2018-08-01 14:33:20 [ INFO] eggs info (test_spam.py:7)
2018-08-01 14:33:20 [ WARNING] eggs warning (test_spam.py:8)
2018-08-01 14:33:20 [ ERROR] eggs error (test_spam.py:9)
2018-08-01 14:33:20 [CRITICAL] eggs critical (test_spam.py:10)
PASSED [100%]
============================= 1 passed in 0.01 seconds =============================
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pytest.ini级别,pytest文件中的花式输出配置在setup.cfg:
[pytest]
log_cli = 1
log_cli_level = CRITICAL
log_cli_format = %(message)s
log_file = pytest.log
log_file_level = DEBUG
log_file_format = %(asctime)s [%(levelname)8s] %(message)s (%(filename)s:%(lineno)s)
log_file_date_format=%Y-%m-%d %H:%M:%S
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测试运行:
$ pytest test_spam.py
=============================== test session starts ================================
platform darwin -- Python 3.6.4, pytest-3.7.0, 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-4673373, inifile: pytest.ini
collected 1 item
test_spam.py::test_eggs
---------------------------------- live log call -----------------------------------
eggs critical
PASSED [100%]
============================= 1 passed in 0.01 seconds =============================
$ cat pytest.log
2018-08-01 14:38:09 [ INFO] eggs info (test_spam.py:7)
2018-08-01 14:38:09 [ WARNING] eggs warning (test_spam.py:8)
2018-08-01 14:38:09 [ ERROR] eggs error (test_spam.py:9)
2018-08-01 14:38:09 [CRITICAL] eggs critical (test_spam.py:10)
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Try*_*yPy 26
对我有用,这是我得到的输出:[snip - >示例不正确]
编辑:似乎你必须将-s选项传递给py.test,因此它不会捕获标准输出.这里(py.test没有安装),它足以使用 python pytest.py -s pyt.py.
对于你的代码,你需要的是通过-s在args到main:
pytest.main(args=['-s', os.path.abspath(__file__)])
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有关捕获输出的信息,请参阅py.test文档.
要打开记录器输出,请使用--capture=no命令行中的发送标志。
--capture=no将显示记录器和打印语句的所有输出。如果您想从记录器中捕获输出而不是打印语句,请使用--capture=sys
pytest --capture=no tests/system/test_backoffice.py
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这是有关“捕获标准输出/标准输出”的更多信息
默认情况下,记录器输出级别为“警告”要更改日志输出级别使用--log-cli-level标志。
pytest --capture=no --log-cli-level=DEBUG tests/system/test_backoffice.py
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小智 5
如果你想用命令行过滤日志,你可以通过--log-cli-level (pytest --log-cli-level) ,日志将从你指定的级别及以上显示
(例如pytest --log-cli-level=INFO将显示 INFO 及以上日志(警告、错误、严重))
请注意:如果您未指定默认 --log-cli-level ,则它是一个警告(https://docs.pytest.org/en/6.2.x/logging.html)
但是如果你不想每次使用 pytest 时都使用--log-cli-level ,你可以 在 pytest 配置文件(pytest.ini/tox.ini/setup.cfg)中设置日志级别
例如
将log-level=INFO放入 pytest.ini (或我提到的其他配置文件)
当你运行pytest时,你只能看到 INFO 和上面的日志
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