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### （1）安装pytest-repeat插件

```bash
pip install pytest-repeat
```
### （2）使用 pytest -s –count=3 命令可以重复执行,不管结果成功还是失败
test_example.py中编写如下代码

```python
def test_01():
    assert 1==1

def test_02():
    assert 1==2

```
重复执行的结果：
```bash
(PytestEnv) G:\lamb_source\pytest_example_for_full_documentation\test_demo>pytest -s --count=3
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 6 items

test_example.py ...FFF

=============================================================================== FAILURES ===============================================================================
_____________________________________________________________________________ test_02[1-3] _____________________________________________________________________________

def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
_____________________________________________________________________________ test_02[2-3] _____________________________________________________________________________

def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
_____________________________________________________________________________ test_02[3-3] _____________________________________________________________________________

def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_02[1-3] - assert 1 == 2
FAILED test_example.py::test_02[2-3] - assert 1 == 2
FAILED test_example.py::test_02[3-3] - assert 1 == 2
===================================================================== 3 failed, 3 passed in 0.24s ======================================================================

```

### （3）使用 pytest -s –count=3 -x 命令可以重复执行，直到失败位置，如果执行满三次了还没有失败，也不再继续了

test_example.py中编写如下代码：

```python
def test_01():
    assert 1==1

def test_02():
    assert 1==2

```
使用如下命令执行：test_02因为第一次就失败了，所以不再继续执行了

```bash
pytest -s --count=3 -x

```
运行结果如下：

```bash
PytestEnv) G:\lamb_source\pytest_example_for_full_documentation\test_demo>pytest -s --count=3 -x
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 6 items

test_example.py ...F

def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:6: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_02[1-3] - assert 1 == 2
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
===================================================================== 1 failed, 3 passed in 0.18s ======================================================================

```

### （4）使用装饰器标记重复执行的次数
在test_example.py中编写如下代码：

```python
import pytest

def test_01():
    assert 1==1

@pytest.mark.repeat(3)
def test_02():
    assert 1==2
```

此时执行只需要使用 pytest -s即可，运行结果如下：

```bash
(PytestEnv) G:\lamb_source\pytest_example_for_full_documentation\test_demo>pytest -s
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 4 items

test_example.py .FFF

@pytest.mark.repeat(3)
    def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:8: AssertionError
_____________________________________________________________________________ test_02[2-3] _____________________________________________________________________________

@pytest.mark.repeat(3)
    def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:8: AssertionError
_____________________________________________________________________________ test_02[3-3] _____________________________________________________________________________

@pytest.mark.repeat(3)
    def test_02():
>       assert 1==2
E       assert 1 == 2

test_example.py:8: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_02[1-3] - assert 1 == 2
FAILED test_example.py::test_02[2-3] - assert 1 == 2
FAILED test_example.py::test_02[3-3] - assert 1 == 2
===================================================================== 3 failed, 1 passed in 0.19s ======================================================================

```

### （5）重复执行类，只需要在类上加上装饰器即可
test_example.py 中编写如下代码：

```python
import pytest

@pytest.mark.repeat(3)
class TestExample():
    def test_01(self):
        assert 1==1

def test_02(self):
        assert 1==2

```

使用pytest -s执行结果如下：

test_example.py ...FFF

=============================================================================== FAILURES ===============================================================================
_______________________________________________________________________ TestExample.test_02[1-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x00000239A98BC370>

def test_02(self):
>       assert 1==3
E       assert 1 == 3

test_example.py:9: AssertionError
_______________________________________________________________________ TestExample.test_02[2-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x00000239A98CB6D0>

def test_02(self):
>       assert 1==3
E       assert 1 == 3

test_example.py:9: AssertionError
_______________________________________________________________________ TestExample.test_02[3-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x00000239A98CBAC0>

def test_02(self):
>       assert 1==3
E       assert 1 == 3

test_example.py:9: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::TestExample::test_02[1-3] - assert 1 == 3
FAILED test_example.py::TestExample::test_02[2-3] - assert 1 == 3
FAILED test_example.py::TestExample::test_02[3-3] - assert 1 == 3
===================================================================== 3 failed, 3 passed in 0.23s ======================================================================

```

### （6）pytest 命令行可通过 –repeat-scope指定重复执行的单元，可选值有：session，module，class，function
* (1) function（默认）范围针对每个用例重复执行，再执行下一个用例
* (2) class 以class为用例集合单位，重复执行class里面的用例，再执行下一个
* (3) module 以模块为单位，重复执行模块里面的用例，再执行下一个
* (4) session 重复整个测试会话，即所有收集的测试执行一次，然后所有这些测试再次执行等等

创建如下结构的文件：

```python
test_demo
    |----test_example.py
    |----test_example_02.py

```
在两个py文件中都编写如下代码：

```python
import pytest

def test_001():
    assert 1==1

def test_002():
    assert 1==2

class TestExample():
    def test_003(self):
        assert 3==3

def test_004(self):
        assert 3==4
```

pytest -s –count=3 –repeat-scope=function 运行的结果如下，每个函数都运行三次后在进行下一个

```bash
(PytestEnv) G:\lamb_source\pytest_example_for_full_documentation\test_demo>pytest -s --count=3 --repeat-scope=function
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 24 items

test_example.py ...FFF...FFF
test_example_02.py ...FFF...FFF

=============================================================================== FAILURES ===============================================================================
____________________________________________________________________________ test_002[1-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
____________________________________________________________________________ test_002[2-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
____________________________________________________________________________ test_002[3-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
______________________________________________________________________ TestExample.test_004[1-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x000001DD9BD0E730>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example.py:15: AssertionError
______________________________________________________________________ TestExample.test_004[2-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x000001DD9BCFBDF0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example.py:15: AssertionError
______________________________________________________________________ TestExample.test_004[3-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x000001DD9BCFB460>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example.py:15: AssertionError
____________________________________________________________________________ test_002[1-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example_02.py:7: AssertionError
____________________________________________________________________________ test_002[2-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example_02.py:7: AssertionError
____________________________________________________________________________ test_002[3-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example_02.py:7: AssertionError
______________________________________________________________________ TestExample.test_004[1-3] _______________________________________________________________________

self = <test_example_02.TestExample object at 0x000001DD9BD2E7C0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
______________________________________________________________________ TestExample.test_004[2-3] _______________________________________________________________________

self = <test_example_02.TestExample object at 0x000001DD9BD9F6A0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
______________________________________________________________________ TestExample.test_004[3-3] _______________________________________________________________________

self = <test_example_02.TestExample object at 0x000001DD9BD16DC0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_002[1-3] - assert 1 == 2
FAILED test_example.py::test_002[2-3] - assert 1 == 2
FAILED test_example.py::test_002[3-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example.py::TestExample::test_004[3-3] - assert 3 == 4
FAILED test_example_02.py::test_002[1-3] - assert 1 == 2
FAILED test_example_02.py::test_002[2-3] - assert 1 == 2
FAILED test_example_02.py::test_002[3-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example_02.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example_02.py::TestExample::test_004[3-3] - assert 3 == 4
==================================================================== 12 failed, 12 passed in 0.34s =====================================================================

```
pytest -s –count=3 –repeat-scope=class 运行结果如下，以类为单位进行重复执行3此，然后执行下一个类

```bash
(PytestEnv) G:\lamb_source\pytest_example_for_full_documentation\test_demo>pytest -s --count=3 --repeat-scope=class
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 24 items

test_example.py .F.F.F.F.F.F
test_example_02.py .F.F.F.F.F.F

=============================================================================== FAILURES ===============================================================================
____________________________________________________________________________ test_002[1-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example.TestExample object at 0x000001DAE249AB50>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

self = <test_example.TestExample object at 0x000001DAE24B0430>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

self = <test_example.TestExample object at 0x000001DAE24B0FA0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example_02.TestExample object at 0x000001DAE24C30A0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

self = <test_example_02.TestExample object at 0x000001DAE24C3F70>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

self = <test_example_02.TestExample object at 0x000001DAE24BD1C0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_002[1-3] - assert 1 == 2
FAILED test_example.py::test_002[2-3] - assert 1 == 2
FAILED test_example.py::test_002[3-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example.py::TestExample::test_004[3-3] - assert 3 == 4
FAILED test_example_02.py::test_002[1-3] - assert 1 == 2
FAILED test_example_02.py::test_002[2-3] - assert 1 == 2
FAILED test_example_02.py::test_002[3-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example_02.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example_02.py::TestExample::test_004[3-3] - assert 3 == 4
==================================================================== 12 failed, 12 passed in 0.26s =====================================================================

```
pytest -s –count=3 –repeat-scope=module运行结果如下：以模块为单位进行重复执行

```bash
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 24 items

test_example.py .F.F.F.F.F.F
test_example_02.py .F.F.F.F.F.F

=============================================================================== FAILURES ===============================================================================
____________________________________________________________________________ test_002[1-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example.TestExample object at 0x000001C76ED3D760>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example.py:15: AssertionError
____________________________________________________________________________ test_002[2-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
______________________________________________________________________ TestExample.test_004[2-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x000001C76ED74D90>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example.py:15: AssertionError
____________________________________________________________________________ test_002[3-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example.py:7: AssertionError
______________________________________________________________________ TestExample.test_004[3-3] _______________________________________________________________________

self = <test_example.TestExample object at 0x000001C76ED74D00>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example_02.TestExample object at 0x000001C76ED9D2E0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
____________________________________________________________________________ test_002[2-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example_02.py:7: AssertionError
______________________________________________________________________ TestExample.test_004[2-3] _______________________________________________________________________

self = <test_example_02.TestExample object at 0x000001C76ED7D850>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
____________________________________________________________________________ test_002[3-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

test_example_02.py:7: AssertionError
______________________________________________________________________ TestExample.test_004[3-3] _______________________________________________________________________

self = <test_example_02.TestExample object at 0x000001C76ED9D9A0>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_002[1-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example.py::test_002[2-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example.py::test_002[3-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[3-3] - assert 3 == 4
FAILED test_example_02.py::test_002[1-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example_02.py::test_002[2-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example_02.py::test_002[3-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[3-3] - assert 3 == 4
==================================================================== 12 failed, 12 passed in 0.28s =====================================================================

```
pytest -s –count=3 –repeat-scope=session 运行结果如下，以整个测试过程为单位重复执行3此

```bash
(PytestEnv) G:\lamb_source\pytest_example_for_full_documentation\test_demo>pytest -s --count=3 --repeat-scope=session
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
rootdir: G:\lamb_source\pytest_example_for_full_documentation\test_demo
plugins: html-2.1.1, metadata-1.10.0, repeat-0.8.0
collected 24 items

test_example.py .F.F
test_example_02.py .F.F
test_example.py .F.F
test_example_02.py .F.F
test_example.py .F.F
test_example_02.py .F.F

=============================================================================== FAILURES ===============================================================================
____________________________________________________________________________ test_002[1-3] _____________________________________________________________________________

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example.TestExample object at 0x0000018975001730>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example_02.TestExample object at 0x000001897504FD60>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example.TestExample object at 0x000001897504F130>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example_02.TestExample object at 0x0000018975060100>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example.TestExample object at 0x000001897505EC10>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

def test_002():
>       assert 1==2
E       assert 1 == 2

self = <test_example_02.TestExample object at 0x000001897505E670>

def test_004(self):
>       assert 3==4
E       assert 3 == 4

test_example_02.py:15: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_example.py::test_002[1-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example_02.py::test_002[1-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[1-3] - assert 3 == 4
FAILED test_example.py::test_002[2-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example_02.py::test_002[2-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[2-3] - assert 3 == 4
FAILED test_example.py::test_002[3-3] - assert 1 == 2
FAILED test_example.py::TestExample::test_004[3-3] - assert 3 == 4
FAILED test_example_02.py::test_002[3-3] - assert 1 == 2
FAILED test_example_02.py::TestExample::test_004[3-3] - assert 3 == 4
==================================================================== 12 failed, 12 passed in 0.27s =====================================================================

```

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