Pytest learning ----- pytest confitest of interface automation test Py file details

One 、’conftest characteristic ：

1、 Can span .py A file called , There are many. .py File call , Allowing conftest.py Only called once fixture, Or call multiple times fixture

2、conftest.py The same as the running use case pakage Next , And there are init.py file

3、 Unwanted import Import conftest.py,pytest The example will automatically identify the file , Put it under the root directory of the project and call the global directory , If you put it in one package Next , That's changing package Effective within , There can be multiple conftest.py

4、conftest.py The configuration script name is fixed , You can't change the name

5、conftest.py File cannot be imported by other files

6、 All test files in the same directory will be executed before running conftest.py file

Two 、’conftest usage ：

conftest The practical application of the document needs to be combined with fixture To use ,fixture In the parameter scope Also applicable conftest in fixture Characteristics of , Here's another explanation

1、fixture Source details

1.fixture（scope='function',params=None,autouse=False,ids=None,name=None）：
fixture There's a scope Parameters can be controlled fixture The scope of action of ,scope： There are four level parameters "function"（ Default ）,"class","module","session

2.params： An optional parameter list , It will result in multiple parameter calls fixture Function and all tests use it .
3.autouse： If True, Active for all tests fixture func You can see it . If False The display requires a reference to activate fixture
4.ids： Each string id A list of , Each string corresponds to params So they're the test ID Part of . If not provided ID They will come from params Automatic generation
5.name：fixture The name of . This defaults to the name of the decoration function . If fixture The first mock exam is used in defining its unified module. , Fixture function name will be requested fixture function arg shelter , One way to solve this problem is to decorate the function command "fixture_<fixturename>" And then use "@pytest.fixture（name='<fixturename>'）".

2、fixture The scope of action of

fixture There's a scope Parameters can be controlled fixture The scope of action of ：session>module>class>function

-function： Every function or method calls

-class： Each class is called once , There can be multiple methods in a class

-module： every last .py File call once , There are many more in this file function and class

-session： Multiple files are called once , Can span .py A file called , Every .py The document is module

function The default mode @pytest.fixture(scope='function') or @pytest.fixture()

3、conftest combination fixture Use

conftest in fixture Of scope Parameter is session, All tests .py Execute once before file execution

conftest in fixture Of scope Parameter is module, Every test .py The file will be executed once before execution conftest In the document fixture

conftest in fixture Of scope Parameter is class, The test class in each test file will be executed once before execution conftest In the document fixture

conftest in fixture Of scope Parameter is function, The test cases of all files will be executed once before execution conftest In the document fixture

3、 ... and 、conftest Application scenarios

1、 Each interface needs to share token

2、 Test case data to be shared by each interface

3、 Configuration information to be shared by each interface

#  Realize partial pre 
import pytest

from comment.yaml_unit import YamlUnit


@pytest.fixture(scope="function")
def conn_getbase():
    print(" Successfully connected to database ")
    yield
    print(" Closing database succeeded ")


@pytest.fixture(scope="session", autouse=True)
def clear_yaml():
    YamlUnit().deleteYaml()

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