Appium系列(三十一)增加失败重试功能

import  unittest
import  sys,copy
from io import StringIO as StringIO
TestResult = unittest.TestResult
class MyResult(TestResult):
    def __init__(self, verbosity=1, trynum=0):
        #默认次数是0
        TestResult.__init__(self)
        self.outputBuffer = StringIO()
        self.stdout0 = None
        self.stderr0 = None
        self.success_count = 0
        self.failure_count = 0
        self.error_count = 0
        self.verbosity = verbosity
        self.trynnum = trynum
        self.result = []
        self.trys=0#
        self.istry=False

    def startTest(self, test):
        TestResult.startTest(self, test)
        self.stdout0 = sys.stdout
        self.stderr0 = sys.stderr

    def complete_output(self):
        if self.stdout0:
            sys.stdout = self.stdout0
            sys.stderr = self.stderr0
            self.stdout0 = None
            self.stderr0 = None
        return self.outputBuffer.getvalue()

    def stopTest(self, test):
        #判断是否要重试
        if self.istry is True :
            #如果执行的次数小于重试的次数 就重试
            if self.trys < self.trynnum :
                #删除最后一个结果
                reslut = self.result.pop(-1)
                #判断结果，如果是错误就把错误的个数减掉
                #如果是失败，就把失败的次数减掉
                if reslut[0] == 1:
                    self.failure_count -= 1
                else:
                    self.error_count -= 1
                sys.stderr.write('{}:用例正在重试中。。。' .format(test.id())+ '\n')
                #深copy用例
                test = copy.copy(test)
                #重试次数增加+1
                self.trys += 1
                #测试
                test(self)
            else:
                self.istry=False
                self.trys =0
        self.complete_output()

    def addSuccess(self, test):
        #成功就不要重试
        self.istry = False
        self.success_count += 1
        TestResult.addSuccess(self, test)
        output = self.complete_output()
        self.result.append((0, test, output, ''))
        if self.verbosity > 1:
            sys.stderr.write('ok ')
            sys.stderr.write(str(test))
            sys.stderr.write('\n')
        else:
            sys.stderr.write('.')

    def addError(self, test, err):
        #重试+1，错误次数+1
        self.istry = True
        self.error_count += 1
        TestResult.addError(self, test, err)
        _, _exc_str = self.errors[-1]
        output = self.complete_output()
        self.result.append((2, test, output, _exc_str))
        if self.verbosity > 1:
            sys.stderr.write('E  ')
            sys.stderr.write(str(test))
            sys.stderr.write('\n')
        else:
            sys.stderr.write('E')

    def addFailure(self, test, err):
        self.istry = True
        TestResult.startTestRun(self)
        self.failure_count += 1
        TestResult.addFailure(self, test, err)
        _, _exc_str = self.failures[-1]
        output = self.complete_output()
        self.result.append((1, test, output, _exc_str))
        if self.verbosity > 1:
            sys.stderr.write('F  ')
            sys.stderr.write(str(test))
            sys.stderr.write('\n')
        else:
            sys.stderr.write('F')

    def stop(self) -> None:
        pass

from  common. trytestnum import *

def runnerCaseApp(devices):
    '''利用unittest的testsuite来组织测试用例'''
    newtry = MyResult(trynum=3)
    test_suit = unittest.TestSuite()
    test_suit.addTest(Parmer.parametrize(testcase_klass=testCase, parame=devices))  # 扩展的其他的测试用例均这样添加
    test_suit.run(newtry)

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