Pytest-parametrize参数化

对于一些场景需要大量数据来支撑的测试，就可以用到参数化来节省手工测试所花费的时间

pytest参数化需要用到装饰器：parametrize

用户，导入pytest模块之后，在函数上方使用，效果如下：

import pytest

@pytest.mark.parametrize("id,goodscode,goodsname",[
    (12,"sp_1235444444","python 入门到放弃！！！"),
(13,"sp_100001","python 入门到放弃！！！"),
(14,"sp_111111","python 入门到放弃！！！")])
def test_update_goods(ke_login_setup,id,goodscode,goodsname):
    print("setp1:修改商品信息")
    res = updata_goods(ke_login_setup,id=id,goodscode=goodscode,goodsname=goodsname)
    print(res.json())

    #断言
    assert  res.json()["code"] == 0
    assert res.json()["msg"] == "success!"

也可以将参数拿出来单独写进一个列表中，实现简单的代码与数据分离，实现效果如下：

import pytest

test_data = [
    (12,"sp_1235444444","python 入门到放弃！！！"),
(13,"sp_100001","python 入门到放弃！！！"),
(14,"sp_111111","python 入门到放弃！！！")]

@pytest.mark.parametrize("id,goodscode,goodsname",test_data)
def test_update_goods(ke_login_setup,id,goodscode,goodsname):
    print("setp1:修改商品信息")
    res = updata_goods(ke_login_setup,id=id,goodscode=goodscode,goodsname=goodsname)
    print(res.json())

    #断言
    assert  res.json()["code"] == 0
    assert res.json()["msg"] == "success!"

也可以实现参数组合的情况，参数组合遵循“笛卡尔积”的方式

pytest使用装饰器的叠加进行参数组合，注意：离函数近的装饰器优先执行

import pytest

test_goodscode = ["sp_1235444444"]
test_goodsname = ["python 入门到放弃！！！","python 入门到结束！！！","python 入门到精通！！！"]

@pytest.mark.parametrize("goodsname",test_goodsname)
@pytest.mark.parametrize("goodscode",test_goodscode)
def test_update_goods(ke_login_setup,goodscode,goodsname):
    print("setp1:修改商品信息")
    res = updata_goods(ke_login_setup,goodscode=goodscode,goodsname=goodsname)
    print(res.json())

    #断言
    assert  res.json()["code"] == 0
    assert res.json()["msg"] == "success!"

以上测试数据都是在代码文件内的，没有达到真正的代码与数据分离

达到代码与数据分离可以用到yaml文件或者json文件内，以下实现为存放在yaml文件：

'''读取yaml文件'''
# 获取当前文件的绝对路径
cur_path = os.path.dirname(os.path.realpath(__file__))

# 获取当前文件上一级路径
yml_path = os.path.dirname(cur_path)

# 拼接获取data_test.yml测试数据的文件的相对路径
data_path = os.path.join(yml_path, "ke11", "data_test.yml")

test_date = read_data_yml(data_path)
print(test_date)

@pytest.mark.parametrize("goodsid,goodscode,goodsname",test_date)
def test_update_goods(ke_login_setup,goodsid,goodscode,goodsname):
    print("setp1:修改商品信息")
    res = updata_goods(ke_login_setup,goodsid=goodsid,goodscode=goodscode,goodsname=goodsname)
    print(res.json())

    #断言
    assert  res.json()["code"] == 0
    assert res.json()["msg"] == "success!"