httprunner 3.x學習17 - 斷言字符串包含

前言

校驗接口返回結果，我們習慣校驗實際結果和期望結果相等，如果只是部分相等可以用contains包含校驗

校驗包含

先看下httprunner/builtin/comparators.py 關於 contains 和 contained_by 函數定義

• check_value 是需要校驗的返回結果
• expect_value 是期望結果，可以是這幾種類型：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

登錄結果返回

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

校驗 msg 包含 success! 字符串

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

如果code返回的結果有多種情況，可能為0，也可以為200，這2種情況但是可以的，於是可以用 contained_by 被包含在[0, 200]

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

對應pytest代碼

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

但是會拋出異常：

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

報錯說 expect_value 必須是 list/tuple/dict/str/bytes 類型，但確實是給的list 類型[0, 200]

這是因為httprunner3.1.4版本的一個bug,把上面源碼里面的contained_by函數check_value改成expect_value，這個bug就可以修復

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

(備注：此問題在httprunner 3.1.5版本已修復，更新時間2021年6月27號)

startswith 和 endswith

校驗字符串以什么和以什么結果

• startswith 字符串以expect_value開頭
• endswith 字符串以expect_value結尾

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!")