httprunner 3.x学习17 - 断言字符串包含

Posted 2021-07-16 上海-悠悠

前言

校验接口返回结果，我们习惯校验实际结果和期望结果相等，如果只是部分相等可以用contains包含校验

校验包含

先看下httprunner/builtin/comparators.py 关于 contains 和 contained_by 函数定义

• check_value 是需要校验的返回结果
• expect_value 是期望结果，可以是这几种类型：list, tuple, dict, basestring

def contains(check_value: Any, expect_value: Any, message: Text = ""):
    assert isinstance(
        check_value, (list, tuple, dict, str, bytes)
    ), "expect_value should be list/tuple/dict/str/bytes type"
    assert expect_value in check_value, message


def contained_by(check_value: Any, expect_value: Any, message: Text = ""):
    assert isinstance(
        check_value, (list, tuple, dict, str, bytes)
    ), "expect_value should be list/tuple/dict/str/bytes type"
    assert check_value in expect_value, message

使用示例

登录结果返回

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{
    "code":0,
    "msg":"login success!",
    "username":"test1",
    "token":"2a05f8e450d590f4ea3aba66294a26ec3fe8e0cf"
}

校验 msg 包含 success! 字符串

    validate:
        - eq: [status_code, 200]
        - contains: [body.msg, success!]

如果code返回的结果有多种情况，可能为0，也可以为200，这2种情况但是可以的，于是可以用 contained_by 被包含在[0, 200]

    validate:
        - eq: [status_code, 200]
        - contains: [body.msg, success!]
        - contained_by: [body.code, [0, 200]]

对应pytest代码

            .validate()
            .assert_equal("status_code", 200)
            .assert_contains("body.msg", "success!")
            .assert_contained_by("body.code", [0, 200])

但是会抛出异常：

E   httprunner.exceptions.ValidationFailure: assert body.code contained_by [0, 200](list)       ==> fail
E   check_item: body.code
E   check_value: 0(int)
E   assert_method: contained_by
E   expect_value: [0, 200](list)
E   message: expect_value should be list/tuple/dict/str/bytes type

报错说 expect_value 必须是 list/tuple/dict/str/bytes 类型，但确实是给的list 类型[0, 200]

这是因为httprunner3.1.4版本的一个bug,把上面源码里面的contained_by函数check_value改成expect_value，这个bug就可以修复

def contained_by(check_value: Any, expect_value: Any, message: Text = ""):
    assert isinstance(
        expect_value, (list, tuple, dict, str, bytes)
    ), "expect_value should be list/tuple/dict/str/bytes type"
    assert check_value in expect_value, message

startswith 和 endswith

校验字符串以什么和以什么结果

• startswith 字符串以expect_value开头
• endswith 字符串以expect_value结尾

def startswith(check_value: Any, expect_value: Any, message: Text = ""):
    assert str(check_value).startswith(str(expect_value)), message


def endswith(check_value: Text, expect_value: Any, message: Text = ""):
    assert str(check_value).endswith(str(expect_value)), message

使用示例

    validate:
        - eq: [status_code, 200]
        - startswith: [body.msg, login]
        - endswith: [body.msg, success!]

pytest 示例

            .validate()
            .assert_equal("status_code", 200)
            .assert_startswith("body.msg", "login")
            .assert_endswith("body.msg", "success!")