Python自动化测试框架【生成测试报告】

如何才能让用例自动运行完之后，生成一张直观可看易懂的测试报告呢？

小编使用的是unittest的一个扩展HTMLTestRunner

• 环境准备

使用之前，我们需要下载HTMLTestRunner.py文件

点击HTMLTestRunner后进入的是一个写满代码的网页，小编推荐操作：右键 --> 另存为，文件名称千万不要改

python3使用上述HTMLTestRunner可能会报错，可以替换如下文件

"""
A TestRunner for use with the Python unit testing framework. It
generates a HTML report to show the result at a glance.

The simplest way to use this is to invoke its main method. E.g.

    import unittest
    import HTMLTestRunner

    ... define your tests ...

    if __name__ == '__main__':
        HTMLTestRunner.main()


For more customization options, instantiates a HTMLTestRunner object.
HTMLTestRunner is a counterpart to unittest's TextTestRunner. E.g.

    # output to a file
    fp = file('my_report.html', 'wb')
    runner = HTMLTestRunner.HTMLTestRunner(
                stream=fp,
                title='My unit test',
                description='This demonstrates the report output by HTMLTestRunner.'
                )

    # Use an external stylesheet.
    # See the Template_mixin class for more customizable options
    runner.STYLESHEET_TMPL = ''

    # run the test
    runner.run(my_test_suite)


------------------------------------------------------------------------
Copyright (c) 2004-2007, Wai Yip Tung
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.
* Neither the name Wai Yip Tung nor the names of its contributors may be
  used to endorse or promote products derived from this software without
  specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""

# URL: http://tungwaiyip.info/software/HTMLTestRunner.html

__author__ = "Wai Yip Tung"
__version__ = "0.8.2"


"""
Change History

Version 0.8.2
* Show output inline instead of popup window (Viorel Lupu).

Version in 0.8.1
* Validated XHTML (Wolfgang Borgert).
* Added description of test classes and test cases.

Version in 0.8.0
* Define Template_mixin class for customization.
* Workaround a IE 6 bug that it does not treat 

%(heading)s
%(report)s
%(ending)s



"""
    # variables: (title, generator, stylesheet, heading, report, ending)


    # ------------------------------------------------------------------------
    # Stylesheet
    #
    # alternatively use a  for external style sheet, e.g.
    #   

    STYLESHEET_TMPL = """

"""



    # ------------------------------------------------------------------------
    # Heading
    #

    HEADING_TMPL = """

%(title)s
%(parameters)s
%(description)s


""" # variables: (title, parameters, description)

    HEADING_ATTRIBUTE_TMPL = """
%(name)s: %(value)s
""" # variables: (name, value)



    # ------------------------------------------------------------------------
    # Report
    #

    REPORT_TMPL = """
Show
Summary
Failed
All


%(test_list)s










    
Test Group/Test case
    
Count
    
Pass
    
Fail
    
Error
    
View

    
Total
    
%(count)s
    
%(Pass)s
    
%(fail)s
    
%(error)s
    
 


""" # variables: (test_list, count, Pass, fail, error)

    REPORT_CLASS_TMPL = r"""

    %(desc)s
    %(count)s
    %(Pass)s
    %(fail)s
    %(error)s
    Detail

""" # variables: (style, desc, count, Pass, fail, error, cid)


    REPORT_TEST_WITH_OUTPUT_TMPL = r"""

    
%(desc)s
    

    
    
        %(status)s

    

        

        
           [x]
        
        
        %(script)s
        
    
    

    

""" # variables: (tid, Class, style, desc, status)


    REPORT_TEST_NO_OUTPUT_TMPL = r"""

    
%(desc)s
    %(status)s

""" # variables: (tid, Class, style, desc, status)


    REPORT_TEST_OUTPUT_TMPL = r"""
%(id)s: %(output)s
""" # variables: (id, output)



    # ------------------------------------------------------------------------
    # ENDING
    #

    ENDING_TMPL = """
 
"""

# -------------------- The end of the Template class -------------------


TestResult = unittest.TestResult

class _TestResult(TestResult):
    # note: _TestResult is a pure representation of results.
    # It lacks the output and reporting ability compares to unittest._TextTestResult.

    def __init__(self, verbosity=1):
        TestResult.__init__(self)
        self.stdout0 = None
        self.stderr0 = None
        self.success_count = 0
        self.failure_count = 0
        self.error_count = 0
        self.verbosity = verbosity

        # result is a list of result in 4 tuple
        # (
        #   result code (0: success; 1: fail; 2: error),
        #   TestCase object,
        #   Test output (byte string),
        #   stack trace,
        # )
        self.result = []


    def startTest(self, test):
        TestResult.startTest(self, test)
        # just one buffer for both stdout and stderr
        self.outputBuffer = io.StringIO()
        stdout_redirector.fp = self.outputBuffer
        stderr_redirector.fp = self.outputBuffer
        self.stdout0 = sys.stdout
        self.stderr0 = sys.stderr
        sys.stdout = stdout_redirector
        sys.stderr = stderr_redirector


    def complete_output(self):
        """
        Disconnect output redirection and return buffer.
        Safe to call multiple times.
        """
        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):
        # 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.
        self.complete_output()


    def addSuccess(self, test):
        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):
        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.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')


class HTMLTestRunner(Template_mixin):
    """
    """
    def __init__(self, stream=sys.stdout, verbosity=1, title=None, description=None):
        self.stream = stream
        self.verbosity = verbosity
        if title is None:
            self.title = self.DEFAULT_TITLE
        else:
            self.title = title
        if description is None:
            self.description = self.DEFAULT_DESCRIPTION
        else:
            self.description = description

        self.startTime = datetime.datetime.now()


    def run(self, test):
        "Run the given test case or test suite."
        result = _TestResult(self.verbosity)
        test(result)
        self.stopTime = datetime.datetime.now()
        self.generateReport(test, result)
        # print >> sys.stderr, '\nTime Elapsed: %s' % (self.stopTime-self.startTime)
        print(sys.stderr, '\nTime Elapsed: %s' % (self.stopTime-self.startTime))
        return result


    def sortResult(self, result_list):
        # unittest does not seems to run in any particular order.
        # Here at least we want to group them together by class.
        rmap = {}
        classes = []
        for n,t,o,e in result_list:
            cls = t.__class__
            if not cls in rmap:
                rmap[cls] = []
                classes.append(cls)
            rmap[cls].append((n,t,o,e))
        r = [(cls, rmap[cls]) for cls in classes]
        return r


    def getReportAttributes(self, result):
        """
        Return report attributes as a list of (name, value).
        Override this to add custom attributes.
        """
        startTime = str(self.startTime)[:19]
        duration = str(self.stopTime - self.startTime)
        status = []
        if result.success_count: status.append('Pass %s'    % result.success_count)
        if result.failure_count: status.append('Failure %s' % result.failure_count)
        if result.error_count:   status.append('Error %s'   % result.error_count  )
        if status:
            status = ' '.join(status)
        else:
            status = 'none'
        return [
            ('Start Time', startTime),
            ('Duration', duration),
            ('Status', status),
        ]


    def generateReport(self, test, result):
        report_attrs = self.getReportAttributes(result)
        generator = 'HTMLTestRunner %s' % __version__
        stylesheet = self._generate_stylesheet()
        heading = self._generate_heading(report_attrs)
        report = self._generate_report(result)
        ending = self._generate_ending()
        output = self.HTML_TMPL % dict(
            title = saxutils.escape(self.title),
            generator = generator,
            stylesheet = stylesheet,
            heading = heading,
            report = report,
            ending = ending,
        )
        self.stream.write(output.encode('utf8'))


    def _generate_stylesheet(self):
        return self.STYLESHEET_TMPL


    def _generate_heading(self, report_attrs):
        a_lines = []
        for name, value in report_attrs:
            line = self.HEADING_ATTRIBUTE_TMPL % dict(
                    name = saxutils.escape(name),
                    value = saxutils.escape(value),
                )
            a_lines.append(line)
        heading = self.HEADING_TMPL % dict(
            title = saxutils.escape(self.title),
            parameters = ''.join(a_lines),
            description = saxutils.escape(self.description),
        )
        return heading


    def _generate_report(self, result):
        rows = []
        sortedResult = self.sortResult(result.result)
        for cid, (cls, cls_results) in enumerate(sortedResult):
            # subtotal for a class
            np = nf = ne = 0
            for n,t,o,e in cls_results:
                if n == 0: np += 1
                elif n == 1: nf += 1
                else: ne += 1

            # format class description
            if cls.__module__ == "__main__":
                name = cls.__name__
            else:
                name = "%s.%s" % (cls.__module__, cls.__name__)
            doc = cls.__doc__ and cls.__doc__.split("\n")[0] or ""
            desc = doc and '%s: %s' % (name, doc) or name

            row = self.REPORT_CLASS_TMPL % dict(
                style = ne > 0 and 'errorClass' or nf > 0 and 'failClass' or 'passClass',
                desc = desc,
                count = np+nf+ne,
                Pass = np,
                fail = nf,
                error = ne,
                cid = 'c%s' % (cid+1),
            )
            rows.append(row)

            for tid, (n,t,o,e) in enumerate(cls_results):
                self._generate_report_test(rows, cid, tid, n, t, o, e)

        report = self.REPORT_TMPL % dict(
            test_list = ''.join(rows),
            count = str(result.success_count+result.failure_count+result.error_count),
            Pass = str(result.success_count),
            fail = str(result.failure_count),
            error = str(result.error_count),
        )
        return report


    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 = o.decode('latin-1')
            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 = e.decode('latin-1')
            ue = e
        else:
            ue = e

        script = self.REPORT_TEST_OUTPUT_TMPL % dict(
            id = tid,
            output = saxutils.escape(str(uo)+ue),
        )

        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,
            status = self.STATUS[n],
        )
        rows.append(row)
        if not has_output:
            return

    def _generate_ending(self):
        return self.ENDING_TMPL


##############################################################################
# Facilities for running tests from the command line
##############################################################################

# Note: Reuse unittest.TestProgram to launch test. In the future we may
# build our own launcher to support more specific command line
# parameters like test title, CSS, etc.
class TestProgram(unittest.TestProgram):
    """
    A variation of the unittest.TestProgram. Please refer to the base
    class for command line parameters.
    """
    def runTests(self):
        # Pick HTMLTestRunner as the default test runner.
        # base class's testRunner parameter is not useful because it means
        # we have to instantiate HTMLTestRunner before we know self.verbosity.
        if self.testRunner is None:
            self.testRunner = HTMLTestRunner(verbosity=self.verbosity)
        unittest.TestProgram.runTests(self)

main = TestProgram

##############################################################################
# Executing this module from the command line
##############################################################################

if __name__ == "__main__":
    main(module=None)

• 使用

接下来，小编将以登录网易邮箱为例，生成一份最基础的测试报告。小伙伴们copy走代码验证时一定记得修改账号密码哦。

目录结构如下：

 将HTMLTestRunner.py文件存放到package包下，将test_login.py存放到testcase目录下，用于编写测试用例，建立testreport包，用于存放测试报告，在email目录下建立run_test.py，用于执行测试

HTMLTestRunner的使用方法在代码注释中介绍和解释【test_login.py】

from selenium import webdriver
import unittest,time

class Login(unittest.TestCase):
    def setUp(self):
        #打开百度，搜索“163网易邮箱”，登录
        driver=webdriver.Firefox()
        driver.implicitly_wait(5)
        self.driver=driver
        driver.get("https://www.baidu.com/")

        driver.find_element_by_id("kw").send_keys("163邮箱登录")
        driver.find_element_by_id("su").click()

        name = driver.find_element_by_id("op_email3_username")
        password = driver.find_element_by_class_name("op_email3_password")
        login = driver.find_element_by_css_selector(".c-btn")

        #如下操作可以使setUp中的变量被其他模块调用
        self.name=name
        self.password=password
        self.login=login

    def tearDown(self):
        self.driver.quit()

    def switch_window(self):
        #切换窗口
        for handle in self.driver.window_handles:
            self.driver.switch_to.window(handle)
            #j增加等待时间，可以提高测试用例执行的健壮性
            time.sleep(2)
        time.sleep(3)

    #成功登录
    def test_right_login(self):
        #账号密码自行填写
        self.name.send_keys("xxx")
        self.password.send_keys("xxx")
        self.login.click()

        self.switch_window()
        #t通过新窗口的title验证用例是否通过
        self.assertEqual(self.driver.title,"网易邮箱6.0版","登录失败")

    #密码为空登录
    def test_null_psw_login(self):
        self.name.send_keys("xxx")
        time.sleep(3)
        self.login.click()
        self.switch_window()
        # t通过新窗口的title验证用例是否通过
        self.assertEqual(self.driver.title,"网易帐号中心 > 用户验证","未跳转至用户验证界面")

【run_test.py】

#导入HTMLTestRunner的包
from package import HTMLTestRunner
#导入test_login的包，执行测试用例时需使用
from testcase.test_login import *

#定义要执行的测试用例的路径
test_dir = './testcase'
#定义要执行的测试用例的路径和名称格式
#test_*.py的意思是，./testcase路径下文件名称格式为test_*.py的文件，*为任意匹配，路径下有多少的test_*.py格式的文件，就依次执行几个
discover = unittest.defaultTestLoader.discover(test_dir, pattern='test_*.py')
#定义测试报告的名称和存储位置
filename = './testreport/loginReport.html'

#开始执行
if __name__ == '__main__':

    suit=unittest.TestSuite()
    suit.addTest(Login("test_right_login"))
    suit.addTest(Login("test_null_psw_login"))

    #以wb(可写的二进制文件)形式，打开文件，若文件不存在，则先执行创建，再执行打开
    fp = open(filename, 'wb')
    #调用HTMLTestRunner生成报告
    runner = HTMLTestRunner.HTMLTestRunner(
        # 指定测试报告的文件
        stream=fp,
        # 测试报告的标题
        title=u"登录网易邮箱测试报告",
        # 测试报告的副标题
        description=u'用例执行情况（win7 64位）'
    )
    #执行用例
    runner.run(discover)

• 报告展示

【整整200集】超超超详细的Python接口自动化测试进阶教程合集，真实模拟企业项目实战