Pytest----如何通过pytest.ini配置不显示告警或将告警报错

【原文链接】Pytest----如何通过pytest.ini配置不显示告警或将告警报错

首先，看如下测试脚本，即在两个测试函数中人为抛出两个告警。

import warnings

def test_demo1():
    print("in test_demo1 ...")
    warnings.warn(SyntaxWarning("warning，used to test..."))
    assert 1==1

def test_demo2():
    print("in test_demo2 ...")
    warnings.warn(UserWarning("warning，used to demo..."))
    assert 1==1
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执行结果如下，即显示出两条告警信息。

(demo-HCIhX0Hq) E:\demo>pytest -s
=================== 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 2 items

test_demo.py in test_demo1 ...
.in test_demo2 ...
.

==================== warnings summary =====================
test_demo.py::test_demo1
  E:\demo\test_demo.py:5: SyntaxWarning: warning，used to test...
    warnings.warn(SyntaxWarning("warning，used to test..."))

test_demo.py::test_demo2
  E:\demo\test_demo.py:10: UserWarning: warning，used to demo...
    warnings.warn(UserWarning("warning，used to demo..."))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
============== 2 passed, 2 warnings in 0.03s ==============

(demo-HCIhX0Hq) E:\demo>
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不论通过命令行的方式还是装饰器的方式，其实都可以在pytest.ini配置文件中配置，比如如下创建pytest.ini，编写如下代码，即指定filterwarnings可将所有的告警忽略不显示。

[pytest]
filterwarnings =
    ignore
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执行结果如下，即此时不再打印告警信息。

(demo-HCIhX0Hq) E:\demo>pytest -s
=================== 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 2 items

test_demo.py in test_demo1 ...
.in test_demo2 ...
.

==================== 2 passed in 0.02s ====================

(demo-HCIhX0Hq) E:\demo>
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同样若指定filterwarnings为error，则可将所有的告警转换为报错。

[pytest]
filterwarnings =
    error
	执行结果如下，即此时显示有两个失败，失败的原因则为产生的告警。
(demo-HCIhX0Hq) E:\demo>pytest -s
=================== 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 2 items

test_demo.py in test_demo1 ...
Fin test_demo2 ...
F

======================== FAILURES =========================
_______________________ test_demo1 ________________________

    def test_demo1():
        print("in test_demo1 ...")
>       warnings.warn(SyntaxWarning("warning，used to test..."))
E       SyntaxWarning: warning，used to test...

test_demo.py:5: SyntaxWarning
_______________________ test_demo2 ________________________

    def test_demo2():
        print("in test_demo2 ...")
>       warnings.warn(UserWarning("warning，used to demo..."))
E       UserWarning: warning，used to demo...

test_demo.py:10: UserWarning
================= short test summary info =================
FAILED test_demo.py::test_demo1 - SyntaxWarning: warning，used to test...
FAILED test_demo.py::test_demo2 - UserWarning: warning，used to demo...
==================== 2 failed in 0.08s ====================

(demo-HCIhX0Hq) E:\demo>
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当然也是可以指定忽略特定的告警类型的，如下即为忽略不显示UserWarning类型的告警。

[pytest]
filterwarnings =
    ignore::UserWarning
	执行结果如下，可以看出此时UserWarning类型的告警不再显示。
(demo-HCIhX0Hq) E:\demo>pytest -s
=================== 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 2 items

test_demo.py in test_demo1 ...
.in test_demo2 ...
.

==================== warnings summary =====================
test_demo.py::test_demo1
  E:\demo\test_demo.py:5: SyntaxWarning: warning，used to test...
    warnings.warn(SyntaxWarning("warning，used to test..."))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
============== 2 passed, 1 warning in 0.02s ===============

(demo-HCIhX0Hq) E:\demo>
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同样也是可以通过配置正则表达式来过滤告警，对匹配的告警进行忽略不显示处理或报错处理，如下即为对告警信息含有demo的的告警进行忽略不显示。

[pytest]
filterwarnings =
    ignore:.*demo.*
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执行结果如下，此时含有demo的告警不再显示。

(demo-HCIhX0Hq) E:\demo>pytest -s
=================== 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 2 items

test_demo.py in test_demo1 ...
.in test_demo2 ...
.

==================== warnings summary =====================
test_demo.py::test_demo1
  E:\demo\test_demo.py:5: SyntaxWarning: warning，used to test...
    warnings.warn(SyntaxWarning("warning，used to test..."))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
============== 2 passed, 1 warning in 0.02s ===============

(demo-HCIhX0Hq) E:\demo>
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对于命令行中使用的参数，可以在pytest.ini中通过addopts指定，如下即关闭告警显示。

[pytest]
addopts=--disable-warnings
	执行结果如下，即显示有两条告警，但告警的具体内容不再显示。
(demo-HCIhX0Hq) E:\demo>pytest -s
=================== 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 2 items

test_demo.py in test_demo1 ...
.in test_demo2 ...
.

============== 2 passed, 2 warnings in 0.02s ==============

(demo-HCIhX0Hq) E:\demo>
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通过指定如下参数，则可以彻底关闭告警。

[pytest]
addopts=-p no:warnings
	执行结果如下，即不再显示搞定内容。
(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 2 items

test_demo.py ..                                      [100%]

==================== 2 passed in 0.02s ====================

(demo-HCIhX0Hq) E:\demo>
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