httprunner学习12-hook 机制实现setup和teardown

前言

unittest框架里面有个非常好的概念:前置( setUp )和后置( tearDown )处理器,真正会用的人不多。
HttpRunner 实际上也是从用的unittest框架,里面也有前置 setup_hooks 和后置 teardown_hooks 的概念。

  • setup_hooks: 在整个用例开始执行前触发 hook 函数,主要用于准备工作。
  • teardown_hooks: 在整个用例结束执行后触发 hook 函数,主要用于测试后的清理工作。

config添加hook机制

在config里添加 setup_hooksteardown_hooks 实际上相当于unittest里面的 setUpClasstearDownClass 的概念。
它的作用是在整个 YAML/JSON 文件的用例只执行一次。接下来看下案例的执行情况就知道了,在debugtalk.py写2个简单函数

# debugtalk.py
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def hook_up():
    print("前置操作:setup!")

def hook_down():
    print("后置操作:teardown!")

test_hook_demo.yml 文件写以下2个test用例

# 上海悠悠,QQ交流群:750815713
- config:
    name: test_demo
    variables: {}
    setup_hooks:
        - ${hook_up()}
    teardown_hooks:
        - ${hook_down()}
- test:
    name: test_demo case1
    request:
        url: http://127.0.0.1:8000/api/test/demo
        method: GET
        headers:
            Content-Type: application/json
            User-Agent: python-requests/2.18.4
        json:
            username: test
            password: 123456
    extract:
        - mail: content.datas.0.mail         # 提取mail
    validate:
        - eq: [status_code, 200]
        - equals: [content.code, 0]
        - equals: [content.msg, success!]
- test:
    name: test_demo case2
    request:
        url: http://127.0.0.1:8000/api/test/demo
        method: GET
        headers:
            Content-Type: application/json
            User-Agent: python-requests/2.18.4
        json:
            username: test
            password: 123456
    extract:
        - mail: content.datas.0.mail         # 提取mail
    validate:
        - eq: [status_code, 200]

执行用例

D:\soft\untitled\projectdemo>hrun test_hook_demo.yml
前置操作:setup!
test_demo case1
INFO     GET http://127.0.0.1:8000/api/test/demo
INFO     status_code: 200, response_time(ms): 0.0 ms, response_length: 255 bytes
INFO     start to extract from response object.
INFO     start to validate.
.
test_demo case2
INFO     GET http://127.0.0.1:8000/api/test/demo
INFO     status_code: 200, response_time(ms): 15.66 ms, response_length: 255 bytes
INFO     start to extract from response object.
INFO     start to validate.
.

----------------------------------------------------------------------
Ran 2 tests in 0.031s

OK
后置操作:teardown!
INFO     Start to render Html report ...
INFO     Generated Html report: D:\soft\untitled\projectdemo\reports\1569512002.html

执行后会发现config里面的 setup_hooks 作用域是整个脚本文件,并且在测试开始前只执行一次,一般用于测试的数据准备工作。
teardown_hooks 在测试用例结束后只执行一次,一般用于数据清理。

test用例添加hook机制

在test测试用例里面也可以添加 setup_hooksteardown_hooks,它的作用域是当前test用例有效,以下是用过简单的输出log的函数,主要看下运行的顺序

# debugtalk.py

def hook_log(var=''):
    print("用例执行log:%s" % var)

在test_hook_demo2.yml 文件写以下2个test用例

# 上海悠悠,QQ交流群:750815713

- config:
    name: test_demo
    variables: {}
    setup_hooks:
        - ${hook_up()}
    teardown_hooks:
        - ${hook_down()}
- test:
    name: test_demo case1
    request:
        url: http://127.0.0.1:8000/api/test/demo
        method: GET
        headers:
            Content-Type: application/json
            User-Agent: python-requests/2.18.4
        json:
            username: test
            password: 123456
    extract:
        - mail: content.datas.0.mail         # 提取mail
    validate:
        - eq: [status_code, 200]
        - equals: [content.code, 0]
        - equals: [content.msg, success!]
    setup_hooks:
        - ${hook_log(--------测试用例 1 开始前的准备-------)}
    teardown_hooks:
        - ${hook_log(-------测试用例 1 结束--------)}

- test:
    name: test_demo case2
    request:
        url: http://127.0.0.1:8000/api/test/demo
        method: GET
        headers:
            Content-Type: application/json
            User-Agent: python-requests/2.18.4
        json:
            username: test
            password: 123456
    extract:
        - mail: content.datas.0.mail         # 提取mail
    validate:
        - eq: [status_code, 200]
    setup_hooks:
        - ${hook_log(---------测试用例 2 开始前的准备---------)}
    teardown_hooks:
        - ${hook_log(----------测试用例 2 结束---------)}

运行结果

D:\soft\untitled\projectdemo>hrun test_hook_demo2.yml
前置操作:setup!
test_demo case1
用例执行log:--------测试用例 1 开始前的准备-------
INFO     GET http://127.0.0.1:8000/api/test/demo
INFO     status_code: 200, response_time(ms): 15.62 ms, response_length: 255 bytes
用例执行log:-------测试用例 1 结束--------
INFO     start to extract from response object.
INFO     start to validate.
.
test_demo case2
用例执行log:---------测试用例 2 开始前的准备---------
INFO     GET http://127.0.0.1:8000/api/test/demo
INFO     status_code: 200, response_time(ms): 0.0 ms, response_length: 255 bytes
用例执行log:----------测试用例 2 结束---------
INFO     start to extract from response object.
INFO     start to validate.
.

----------------------------------------------------------------------
Ran 2 tests in 0.016s

OK
后置操作:teardown!
INFO     Start to render Html report ...
INFO     Generated Html report: D:\soft\untitled\projectdemo\reports\1569512879.html

运行结果可以看出,在test用例里面的前置和后置操作是针对单个用例的

posted @ 2019-09-26 23:20 上海-悠悠 阅读(...) 评论(...) 编辑 收藏