python3修改HTMLTestRunner，生成有截图的测试报告，并发送测试邮件

Posted 2020-10-24 zhou-queen

3. 如何将第一步得到的地址和名称 输入 进第二步里的表格中呢。。。

用上述查找元素的方法，发现HTMLTestRunner.py中REPORT_TEST_WITH_OUTPUT_TMPL是用来输出测试结果的。我们只需要将截图url和名称写进去即可。

假定我们目前已经可以定位到每个用例的具体截图，并将截图url定义为变量html，名称定义成变量name，修改HTMLTestRunner.py的代码如下：

  REPORT_TEST_WITH_OUTPUT_TMPL = r"""
<tr id=‘%(tid)s‘ class=‘%(Class)s‘>
    <td class=‘%(style)s‘><div class=‘testcase‘>%(desc)s</div></td>
    <td colspan=‘5‘ align=‘center‘>

    <!--css div popup start-->
    <a class="popup_link" onfocus=‘this.blur();‘ href="javascript:showTestDetail(‘div_%(tid)s‘)" >
        %(status)s</a>
    <td><a href="%(html)s" target="_blank">%(name)s</a></td>      <!--此处修改-->
    <div id=‘div_%(tid)s‘ class="popup_window">
        <div style=‘text-align: right; color:red;cursor:pointer‘>
        <a onfocus=‘this.blur();‘ onclick="document.getElementById(‘div_%(tid)s‘).style.display = ‘none‘ " >
           [x]</a>
        </div>
        <pre>
        %(script)s
        </pre>
       
    </div>
    <!--css div popup end-->   
    </td>

</tr>
""" # variables: (tid, Class, style, desc, status)

找到变量定义的函数：_generate_report_test，修改如下：

 row = tmpl % dict(
            tid = tid,
            Class = (n == 0 and ‘hiddenRow‘ or ‘none‘),
            style = n == 2 and ‘errorCase‘ or (n == 1 and ‘failCase‘ or ‘none‘),
            desc = desc,
            script = script,
            html = html,        #此处修改
            name = name,     #此处修改
            status = self.STATUS[n],
        )
        rows.append(row)
        if not has_output:
            return

定义变量、以url格式输出变量已经搞定。接下来是给变量赋值~~

思路：依照大神们些的博客，看出函数_generate_report_test中的ue和uo代表unittest中打印日志和抛出异常日志。想到如果我把截图的url和name打印到日志中，就能够从ue和uo中很容易的提取到url和name。
开始对unittest进行改造~~

思路：我想对每条用例都输出截图，不论fail或者pass。如果用例执行正确，则只打印日志。如果用例执行错误，则打印日志并抛出异常日志。

unittest是python3自带的库，我们需要找到unittest文件夹，对case.py修改。路径：XXX（自己的python安装路径）\Python\Python36\Lib\unittest
case.py的TestCase类中增加两个方法

def screenshot():
def add(func):
具体如下：

class TestCase(object):
    def screenshot():    #（一）中讲过定义截图的方法
        imageName = str(time.time()) + ‘.png ‘  
        imagepath = ‘//sdcard//‘ + imageName
        path = os.getcwd() + ‘\\screenshot‘  
        if not os.path.exists(path):        
            os.mkdir( path)
        os.system("adb shell //system//bin//screencap -p " + imagepath)
        os.system(‘adb pull ‘ + imagepath + path)
        print(‘lustrat‘ + path + ‘\\‘ + imageName + ‘luend‘)  #输出日志，前后加‘luStrat‘luEnd‘特殊字符方便截取

    def add(func):  #增加打印日志的方法
        def wrapper(self, first, second, msg=None):
            try:
                func(self, first, second, msg=None)
                TestCase.screenshot()

            except AssertionError:  
                TestCase.screenshot()
                raise AssertionError(msg)  # 抛出AssertionError
        return wrapper

 

然后在用到的assert方法前加@add装饰器。注意定义的func的传参与assert方法一致。如我用到了

@add        #此处修改
def assertEqual(self, first, second, msg=None):
        """Fail if the two objects are unequal as determined by the ‘==‘
           operator.
        """
        assertion_func = self._getAssertEqualityFunc(first, second)
        assertion_func(first, second, msg=msg)

至此HTMLTestRunner.py的uo和ue输出的日志就包含了print的截图地址信息

最后一步了，取出ue和uo的关于截图的url和name，并赋值给变量html和name就搞定了~~~　

    def _generate_report_test(self, rows, cid, tid, n, t, o, e):
        # e.g. ‘pt1.1‘, ‘ft1.1‘, etc
        has_output = bool(o or e)
        tid = (n == 0 and ‘p‘ or ‘f‘) + ‘t%s.%s‘ % (cid+1,tid+1)
        name = t.id().split(‘.‘)[-1]
        doc = t.shortDescription() or ""
        desc = doc and (‘%s: %s‘ % (name, doc)) or name
        tmpl = has_output and self.REPORT_TEST_WITH_OUTPUT_TMPL or self.REPORT_TEST_NO_OUTPUT_TMPL
        # o and e should be byte string because they are collected from stdout and stderr?
        if isinstance(o,str):
            # TODO: some problem with ‘string_escape‘: it escape \n and mess up formating
            # uo = unicode(o.encode(‘string_escape‘))
            uo = e
        else:
            uo = o
        if isinstance(e,str):
            # TODO: some problem with ‘string_escape‘: it escape \n and mess up formating
            # ue = unicode(e.encode(‘string_escape‘))
            ue = o      #此处修改
        else:
            ue = o

        script = self.REPORT_TEST_OUTPUT_TMPL % dict(
            id = tid,
            output = saxutils.escape(str(uo)+str(ue)),
        )
        s= str(uo) +str(ue)      #此处修改开始
        if s.count(‘png‘)!=0:       #判断日志中是否有图片
            html =  s[s.find(‘lustrat‘)+7:s.find(‘luend‘)]
            name =  html[html.find(‘shot\\‘)+5:]
        else:
            html = ‘ ‘
            name = ‘ ‘              #此处修改结束
        row = tmpl % dict(
            tid = tid,
            Class = (n == 0 and ‘hiddenRow‘ or ‘none‘),
            style = n == 2 and ‘errorCase‘ or (n == 1 and ‘failCase‘ or ‘none‘),
            desc = desc,
            script = script,
            html = html,
            name = name,
            status = self.STATUS[n],
        )
        rows.append(row)
        if not has_output:
            return

百度云盘下载地址：unittest文件夹case.py修改链接：https://pan.baidu.com/s/1eTMJu86 密码：n19o

                                       HTMLTestRunner.py链接：https://pan.baidu.com/s/1dGSRbg9 密码：lw0e