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### 1 下面以如下需求为例实例演示如何自定义测试文件、测试用例，测试类的命名规则
   * 测试文件以 test_, check_开头，或者_test, _check结尾
   * 测试用例以test_，check_开头，或者_test, _check结尾
   * 测试类以Test,Check开头，或者Test，Check结尾

### 2 实现步骤：
（1）在根目录创建 pytest.ini文件
（2） 在pytest.ini文件中编写如下内容：

```python
[pytest]
python_files = test_*  *_test.py   check_* *_check.py
python_classes =  Test*   Check*  *Test   *Check
python_functions = test_*  check_* *_test *_check
```

（3）依次创建 test_demo.py，demo_test.py，check_demo.py，demo_check.py
![](https://redrose2100.oss-cn-hangzhou.aliyuncs.com/img/b56d0fe8-d42a-11ee-87a4-0242ac110004.png)

（4）在上述每个文件中均写入如下测试用例代码

```python
def test_demo():
    print("in test_demo...")

def demo_test():
    print("in demo_test...")

def check_demo():
    print("in test_demo...")

def demo_check():
    print("in demo_test...")

class CheckDemo:
    def test_demo(self):
        print("in test_demo...")

def demo_test(self):
        print("in demo_test...")

def check_demo(self):
        print("in test_demo...")

def demo_check(self):
        print("in demo_test...")

class DemoCheck:
    def test_demo(self):
        print("in test_demo...")

def demo_test(self):
        print("in demo_test...")

def check_demo(self):
        print("in test_demo...")

def demo_check(self):
        print("in demo_test...")
```
（5）执行 pytest 查看结果如下：即均已生效

```python
G:\redrose2100\src\demo>pytest
========================================================================== test session starts ===========================================================================
platform win32 -- Python 3.9.5, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: G:\redrose2100\src\demo, configfile: pytest.ini
plugins: allure-pytest-2.9.43, rerunfailures-10.0
collected 48 items

check_example.py ............                                                                                                                                       [ 25%]
example_check.py ............                                                                                                                                       [ 50%]
example_test.py ............                                                                                                                                        [ 75%]
test_example.py ............                                                                                                                                        [100%]

=========================================================================== 48 passed in 0.12s ===========================================================================

G:\redrose2100\src\demo>
```

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