1. 前言

命令行參數是根據命令行選項將不同的值傳遞給測試函數，比如平常在cmd執行”pytest —html=report.html”,這里面的”—html=report.html“就是從命令行傳入的參數
對應的參數名稱是html，參數值是report.html

2.contetest配置參數

1.首先需要在contetest.py添加命令行選項,命令行傳入參數”—cmdopt“, 用例如果需要用到從命令行傳入的參數，就調用cmdopt函數：

# content of conftest.py
import pytest

def pytest_addoption(parser):
    parser.addoption(
        "--cmdopt", action="store", default="type1", help="my option: type1 or type2"
    )

@pytest.fixture
def cmdopt(request):
    return request.config.getoption("--cmdopt")

2.測試用例編寫案例

# content of test_sample.py
import pytest
def test_answer(cmdopt):
    if cmdopt == "type1":
        print("first")
    elif cmdopt == "type2":
        print("second")
    assert 0  # to see what was printed

if __name__ == "__main__":
    pytest.main(["-s", "test_case1.py"])

運行結果：

>pytest -s
============================= test session starts =============================
test_sample.py first
F

================================== FAILURES ===================================
_________________________________ test_answer _________________________________

cmdopt = 'type1'

    def test_answer(cmdopt):
        if cmdopt == "type1":
            print("first")
        elif cmdopt == "type2":
            print("second")
>       assert 0  # to see what was printed
E       assert 0

test_case1.py:8: AssertionError
========================== 1 failed in 0.05 seconds ===========================

3. 帶參數啟動

1.如果不帶參數執行，那么傳默認的default=”type1”，接下來在命令行帶上參數去執行

$ pytest -s test_sample.py --cmdopt=type2

test_sample.py second
F

================================== FAILURES ===================================
_________________________________ test_answer _________________________________

cmdopt = 'type2'

    def test_answer(cmdopt):
        if cmdopt == "type1":
            print("first")
        elif cmdopt == "type2":
            print("second")
>       assert 0  # to see what was printed
E       assert 0

test_case1.py:8: AssertionError
========================== 1 failed in 0.05 seconds ===========================