分類目錄：《系統學習Python》總目錄
相關文章：
· 單元測試unittest：框架結構
· 單元測試unittest：測試固件
· 單元測試unittest：編寫測試用例
· 單元測試unittest：執行測試用例
· 單元測試unittest：用例執行次序
· 單元測試unittest：內置裝飾器
· 單元測試unittest：命令行執行測試
· 單元測試unittest：批量執行測試文件
· 單元測試unittest：測試斷言
· 單元測試unittest：測試報告
前面的文章，我們所有的測試結果都是直接輸出到PyCharm控制台的。這不利於我們查看和保存測試結果。本文我們將說明如何借助HTMLTestRunner生成HTML測試報告。
准備工作如下。
HTMLTestRunner.py文件，官網為Python 2的，如需Python 3的可以移步至本文末尾。HTMLTestRunner.py文件復制到Python安裝目錄下的Lib文件夾中。沒有報錯，說明導入成功。接下來，我們在文件夾下面新建一個Python Package，並取名為“Storm_10_2”。然後在下面新建3個文件，文件名及內容如下：
文件test1.py:
import unittest
class MyTestCase(unittest.TestCase):
def test_a(self):
print('test_a')
self.assertEqual('a', 'a')
def test_b(self):
print('test_b')
self.assertEqual('b', 'b')
if __name__ == '__main__':
unittest.main()
文件test2.py:
import unittest
class MyTestCase(unittest.TestCase):
def test_c(self):
print('test_c')
self.assertEqual('c', 'c')
def test_d(self):
print('test_d')
self.assertEqual('d', 'd')
if __name__ == '__main__':
unittest.main()
文件run.py：
import unittest
import HTMLTestRunner
if __name__ == '__main__':
testsuite = unittest.TestLoader().discover('.')
unittest.TextTestRunner(verbosity=2).run(testsuite)
file_name = r'D:\HTMLTestRunner_output.html'
with open(file_name, 'wb') as f:
runner = HTMLTestRunner.HTMLTestRunner(stream=f, title='報告標題', description='報告描述')
runner.run(testsuite)
我們重點看一下run.py文件，有以下幾點需要注意：
unittest.TestLoader().discover('.')構造測試集合。with open的方式打開、寫入文件，不需要手動關閉文件。HTMLTestRunner.HTMLTestRunner來生成測試報告。當我們執行run.py文件後，程序會在指定的目錄（上方代碼指定的目錄為D盤根目錄）下生成一個測試報告文件，我們通過浏覽器打開：
前文提到官網HTMLTestRunner.py文件為Python 2的，Python 3版本的可以直接復制如下代碼：
"""
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 = '<link rel="stylesheet" href="my_stylesheet.css" type="text/css">'
# 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 <script> block as CDATA.
Version in 0.7.1
* Back port to Python 2.3 (Frank Horowitz).
* Fix missing scroll bars in detail log (Podi).
"""
# TODO: color stderr
# TODO: simplify javascript using ,ore than 1 class in the class attribute?
import datetime
import io
import sys
import time
import unittest
from xml.sax import saxutils
# ------------------------------------------------------------------------
# The redirectors below are used to capture output during testing. Output
# sent to sys.stdout and sys.stderr are automatically captured. However
# in some cases sys.stdout is already cached before HTMLTestRunner is
# invoked (e.g. calling logging.basicConfig). In order to capture those
# output, use the redirectors for the cached stream.
#
# e.g.
# >>> logging.basicConfig(stream=HTMLTestRunner.stdout_redirector)
# >>>
class OutputRedirector(object):
""" Wrapper to redirect stdout or stderr """
def __init__(self, fp):
self.fp = fp
def write(self, s):
self.fp.write(bytes(s,'UTF-8'))
def writelines(self, lines):
self.fp.writelines(lines)
def flush(self):
self.fp.flush()
stdout_redirector = OutputRedirector(sys.stdout)
stderr_redirector = OutputRedirector(sys.stderr)
# ----------------------------------------------------------------------
# Template
class Template_mixin(object):
"""
Define a HTML template for report customerization and generation.
Overall structure of an HTML report
HTML
+------------------------+
|<html> |
| <head> |
| |
| STYLESHEET |
| +----------------+ |
| | | |
| +----------------+ |
| |
| </head> |
| |
| <body> |
| |
| HEADING |
| +----------------+ |
| | | |
| +----------------+ |
| |
| REPORT |
| +----------------+ |
| | | |
| +----------------+ |
| |
| ENDING |
| +----------------+ |
| | | |
| +----------------+ |
| |
| </body> |
|</html> |
+------------------------+
"""
STATUS = {
0: 'pass',
1: 'fail',
2: 'error',
}
DEFAULT_TITLE = 'Unit Test Report'
DEFAULT_DESCRIPTION = ''
# ------------------------------------------------------------------------
# HTML Template
HTML_TMPL = r"""<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>%(title)s</title>
<meta name="generator" content="%(generator)s"/>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
%(stylesheet)s
</head>
<body>
<script language="javascript" type="text/javascript"><!--
output_list = Array();
/* level - 0:Summary; 1:Failed; 2:All */
function showCase(level) {
trs = document.getElementsByTagName("tr");
for (var i = 0; i < trs.length; i++) {
tr = trs[i];
id = tr.id;
if (id.substr(0,2) == 'ft') {
if (level < 1) {
tr.className = 'hiddenRow';
}
else {
tr.className = '';
}
}
if (id.substr(0,2) == 'pt') {
if (level > 1) {
tr.className = '';
}
else {
tr.className = 'hiddenRow';
}
}
}
}
function showClassDetail(cid, count) {
var id_list = Array(count);
var toHide = 1;
for (var i = 0; i < count; i++) {
tid0 = 't' + cid.substr(1) + '.' + (i+1);
tid = 'f' + tid0;
tr = document.getElementById(tid);
if (!tr) {
tid = 'p' + tid0;
tr = document.getElementById(tid);
}
id_list[i] = tid;
if (tr.className) {
toHide = 0;
}
}
for (var i = 0; i < count; i++) {
tid = id_list[i];
if (toHide) {
document.getElementById('div_'+tid).style.display = 'none'
document.getElementById(tid).className = 'hiddenRow';
}
else {
document.getElementById(tid).className = '';
}
}
}
function showTestDetail(div_id){
var details_div = document.getElementById(div_id)
var displayState = details_div.style.display
// alert(displayState)
if (displayState != 'block' ) {
displayState = 'block'
details_div.style.display = 'block'
}
else {
details_div.style.display = 'none'
}
}
function html_escape(s) {
s = s.replace(/&/g,'&');
s = s.replace(/</g,'<');
s = s.replace(/>/g,'>');
return s;
}
/* obsoleted by detail in <div>
function showOutput(id, name) {
var w = window.open("", //url
name,
"resizable,scrollbars,status,width=800,height=450");
d = w.document;
d.write("<pre>");
d.write(html_escape(output_list[id]));
d.write("\n");
d.write("<a href='javascript:window.close()'>close</a>\n");
d.write("</pre>\n");
d.close();
}
*/
--></script>
%(heading)s
%(report)s
%(ending)s
</body>
</html>
"""
# variables: (title, generator, stylesheet, heading, report, ending)
# ------------------------------------------------------------------------
# Stylesheet
#
# alternatively use a <link> for external style sheet, e.g.
# <link rel="stylesheet" href="$url" type="text/css">
STYLESHEET_TMPL = """
<style type="text/css" media="screen">
body { font-family: verdana, arial, helvetica, sans-serif; font-size: 80%; }
table { font-size: 100%; }
pre { }
/* -- heading ---------------------------------------------------------------------- */
h1 {
font-size: 16pt;
color: gray;
}
.heading {
margin-top: 0ex;
margin-bottom: 1ex;
}
.heading .attribute {
margin-top: 1ex;
margin-bottom: 0;
}
.heading .description {
margin-top: 4ex;
margin-bottom: 6ex;
}
/* -- css div popup ------------------------------------------------------------------------ */
a.popup_link {
}
a.popup_link:hover {
color: red;
}
.popup_window {
display: none;
position: relative;
left: 0px;
top: 0px;
/*border: solid #627173 1px; */
padding: 10px;
background-color: #E6E6D6;
font-family: "Lucida Console", "Courier New", Courier, monospace;
text-align: left;
font-size: 8pt;
width: 500px;
}
}
/* -- report ------------------------------------------------------------------------ */
#show_detail_line {
margin-top: 3ex;
margin-bottom: 1ex;
}
#result_table {
width: 80%;
border-collapse: collapse;
border: 1px solid #777;
}
#header_row {
font-weight: bold;
color: white;
background-color: #777;
}
#result_table td {
border: 1px solid #777;
padding: 2px;
}
#total_row { font-weight: bold; }
.passClass { background-color: #6c6; }
.failClass { background-color: #c60; }
.errorClass { background-color: #c00; }
.passCase { color: #6c6; }
.failCase { color: #c60; font-weight: bold; }
.errorCase { color: #c00; font-weight: bold; }
.hiddenRow { display: none; }
.testcase { margin-left: 2em; }
/* -- ending ---------------------------------------------------------------------- */
#ending {
}
</style>
"""
# ------------------------------------------------------------------------
# Heading
#
HEADING_TMPL = """<div class='heading'>
<h1>%(title)s</h1>
%(parameters)s
<p class='description'>%(description)s</p>
</div>
""" # variables: (title, parameters, description)
HEADING_ATTRIBUTE_TMPL = """<p class='attribute'><strong>%(name)s:</strong> %(value)s</p>
""" # variables: (name, value)
# ------------------------------------------------------------------------
# Report
#
REPORT_TMPL = """
<p id='show_detail_line'>Show
<a href='javascript:showCase(0)'>Summary</a>
<a href='javascript:showCase(1)'>Failed</a>
<a href='javascript:showCase(2)'>All</a>
</p>
<table id='result_table'>
<colgroup>
<col align='left' />
<col align='right' />
<col align='right' />
<col align='right' />
<col align='right' />
<col align='right' />
</colgroup>
<tr id='header_row'>
<td>Test Group/Test case</td>
<td>Count</td>
<td>Pass</td>
<td>Fail</td>
<td>Error</td>
<td>View</td>
</tr>
%(test_list)s
<tr id='total_row'>
<td>Total</td>
<td>%(count)s</td>
<td>%(Pass)s</td>
<td>%(fail)s</td>
<td>%(error)s</td>
<td> </td>
</tr>
</table>
""" # variables: (test_list, count, Pass, fail, error)
REPORT_CLASS_TMPL = r"""
<tr class='%(style)s'>
<td>%(desc)s</td>
<td>%(count)s</td>
<td>%(Pass)s</td>
<td>%(fail)s</td>
<td>%(error)s</td>
<td><a href="javascript:showClassDetail('%(cid)s',%(count)s)">Detail</a></td>
</tr>
""" # variables: (style, desc, count, Pass, fail, error, cid)
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>
<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)
REPORT_TEST_NO_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'>%(status)s</td>
</tr>
""" # variables: (tid, Class, style, desc, status)
REPORT_TEST_OUTPUT_TMPL = r"""
%(id)s: %(output)s
""" # variables: (id, output)
# ------------------------------------------------------------------------
# ENDING
#
ENDING_TMPL = """<div id='ending'> </div>"""
# -------------------- 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('\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
else:
uo = o.decode('utf-8')
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
else:
ue = e.decode('utf-8')
script = self.REPORT_TEST_OUTPUT_TMPL % dict(
id = tid,
output = saxutils.escape(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)
