HTMLTestRunner_Chart 基于 unittest 的测试报告，使用详情见 demo

GitHub: https://github.com/githublitao/HTMLTestRunner_Chart 欢迎 star
参考链接:
http://tungwaiyip.info/software/HTMLTestRunner.html
https://github.com/GoverSky/HTMLTestRunner_cn

优化报告内容

1. 测试报告中文显示，优化一些断言失败正文乱码问题
   
2. 新增错误和失败截图，展示到 html 报告里
   
3. 增加饼图统计
   
4. 失败后重试功能
   
5. 保存近 10 次测试结果，并通过柱状图展示
   
6. 切换测试日期，展示历史测试结果
   
7. 兼容 python2.x 和 3.x
   

注意：

1. 在是 python3.x 中，如果在这里 setUp 里初始化 driver ，因为 3.x 版本 unittest 运行机制不同，会导致用力失败时截图失败，目前只有采用捕获异常来截图，或者在 setUpClass 里初始化 driver
   
2. driver 初始化变量名必须命名为 driver
   

报告首页：

用例截图：

失败饼图：

历史走势：

失败重试：

1. 生成报告的参数里面加了一个参数 retry=1,这个表示用例失败后，会重新跑一次。
   

   if __name__ == '__main__':
   suite = unittest.TestLoader().loadTestsFromTestCase(case_01)
   runner = HTMLTestRunner(
       title="带截图，饼图，折线图，历史结果查看的测试报告",
       description="",
       stream=open("./demo.html", "wb"),
       verbosity=2,
       retry=0,
       save_last_try=True)
   runner.run(suite)
   

   保存测试结果到 json 文件：

   def mkdir_json(self):
       is_exists = os.path.exists(self.path)
       # 判断结果
       if not is_exists:
           try:
               # 如果不存在则创建目录
               # 创建目录操作函数
               with open(self.path, "w+") as f:
                   f.write("var data = []")
               return True
           except Exception as e:
               print(e)
               return False
       else:
           return True
   
   def Write(self, title, heading, desc, data):
       try:
           with open(self.path, "r+") as f:
               all_data = f.read().split(" = ", 1)
               data_json = all_data[1]
               data_json = eval(data_json)
               if len(data_json) >= 10:
                   del data_json[0]
               description = dict()
               description["startTime"] = heading[0][1]
               description["duration"] = heading[1][1]
               if PY3K:
                   description["title"] = title
                   description["status"] = heading[2][1]
                   description["desc"] = desc
                   description["data"] = data
                   status = heading[2][1].split(" ")
                   for j in range(0, len(status)):
                       if status[j] == "通过":
                           description["success"] = str(status[j + 1])
                       if status[j] == "失败":
                           description["fail"] = str(status[j + 1])
                       if status[j] == "错误":
                           description["error"] = str(status[j + 1])
               else:
                   description["title"] = title.encode("gbk")
                   description["status"] = heading[2][1].encode("gbk")
                   description["desc"] = desc.encode("gbk")
                   description["data"] = data.encode("gbk")
                   status = heading[2][1].split(" ")
                   for j in range(0, len(status)):
                       if status[j] == u"通过":
                           description["success"] = str(status[j + 1])
                       if status[j] == u"失败":
                           description["fail"] = str(status[j + 1])
                       if status[j] == u"错误":
                           description["error"] = str(status[j + 1])
               data_json.append(description)
               data_json = str(data_json)
               f.seek(0)
               f.truncate()
               f.write(str("var data = " + data_json))
       except IndexError:
           sys.stderr.write("JSON初始化内容有误! 初始化内容’var data = []‘")
   

   错误/失败截图，修改 addError 和 addFail 函数：

   def addFailure(self, test, err):
       self.failure_count += 1
       self.status = 1
       TestResult.addFailure(self, test, err)
       _, _exc_str = self.failures[-1]
       output = self.complete_output()
       self.result.append((1, test, output, _exc_str))
       if not getattr(test, "driver",""):
           pass
       else:
           try:
               driver = getattr(test, "driver")
               test.imgs.append(driver.get_screenshot_as_base64())
           except Exception as e:
               pass
       if self.verbosity > 1:
           sys.stderr.write('F  ')
           sys.stderr.write(str(test))
           sys.stderr.write('\n')
       else:
           sys.stderr.write('F')
   

   错误重试，修改 stopTest 函数：

   def stopTest(self, test):
      # Usually one of addSuccess, addError or addFailure would have been called.
      # But there are some path in unittest that would bypass this.
      # We must disconnect stdout in stopTest(), which is guaranteed to be called.
      if self.retry:
          if self.status == 1:
              self.trys += 1
              if self.trys <= self.retry:
                  if self.save_last_try:
                      t = self.result.pop(-1)
                      if t[0]==1:
                          self.failure_count-=1
                      else:
                          self.error_count -= 1
                  test=copy.copy(test)
                  sys.stderr.write("Retesting... ")
                  sys.stderr.write(str(test))
                  sys.stderr.write('..%d \n' % self.trys)
                  doc = test._testMethodDoc or ''
                  if doc.find('_retry')!=-1:
                      doc = doc[:doc.find('_retry')]
                  desc ="%s_retry:%d" %(doc, self.trys)
                  if not PY3K:
                      if isinstance(desc, str):
                          desc = desc.decode("utf-8")
                  test._testMethodDoc = desc
                  test(self)
              else:
                  self.status = 0
                  self.trys = 0
      self.complete_output()
   

   HTML 模板导入 JSON 历史结果，如果 JSON 出现错误，则历史结果和走势图错误：

   <head>
   <title>%(title)s</title>
   <meta name="generator" content="%(generator)s"/>
   <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
   <script type="text/javascript" src="%(jsonpath)s" charset="gbk"></script>
   <link href="http://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">
   <script src="https://cdn.bootcss.com/echarts/3.8.5/echarts.common.min.js"></script>
   <!-- <script type="text/javascript" src="js/echarts.common.min.js"></script> -->
   
   %(stylesheet)s