python - Django 调试服务器的代码覆盖率

Question

我正在使用来自 http://nedbatchelder.com/code/coverage/ 的 coverage.py为我的 django 单元测试获取覆盖率数据，但我似乎无法弄清楚如何在 django 调试服务器上运行覆盖率。我想使用以下方式运行 django 服务器:

coverage -x manage.py runserver 0.0.0.0:8080

当停止这个服务器时，我应该得到覆盖率数据，我可以使用它来生成覆盖率报告。但是在使用 CTRL-c 关闭服务器时，我得到了

^CCoverage.py warning: No data was collected.

如果无法使用此 coverage.py 脚本，我准备使用任何其他工具。

更新:

使用 --noreload 它似乎确实有效，但在生成 html 覆盖率报告时我得到以下堆栈跟踪:

traceback (most recent call last):
  File "/usr/local/bin/coverage", line 8, in <module>
    load_entry_point('coverage==3.5.1', 'console_scripts', 'coverage')()
  File "/usr/local/lib/python2.6/dist-packages/coverage/cmdline.py", line 657, in main
    status = CoverageScript().command_line(argv)
  File "/usr/local/lib/python2.6/dist-packages/coverage/cmdline.py", line 549, in command_line
    directory=options.directory, **report_args)
  File "/usr/local/lib/python2.6/dist-packages/coverage/control.py", line 599, in html_report
    reporter.report(morfs, config=self.config)
  File "/usr/local/lib/python2.6/dist-packages/coverage/html.py", line 83, in report
    self.report_files(self.html_file, morfs, config, config.html_dir)
  File "/usr/local/lib/python2.6/dist-packages/coverage/report.py", line 86, in report_files
    report_fn(cu, self.coverage._analyze(cu))
  File "/usr/local/lib/python2.6/dist-packages/coverage/html.py", line 198, in html_file
    self.write_html(html_path, html)
  File "/usr/local/lib/python2.6/dist-packages/coverage/html.py", line 103, in write_html
    write_encoded(fname, html, 'ascii', 'xmlcharrefreplace')
  File "/usr/local/lib/python2.6/dist-packages/coverage/backward.py", line 137, in write_encoded
    f.write(text.decode('utf8'))
  File "/usr/lib/python2.6/encodings/utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xdf in position 59130: invalid continuation byte

Answer 1

嗯，不知道该怎么做。当我创建一个全新的 Django 项目时，我得到了一些覆盖率测量值:

$ django-admin.py startproject mysite
$ cd mysite
$ coverage run manage.py runserver
Validating models...

0 errors found
Django version 1.3, using settings 'mysite.settings'
Development server is running at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
^C
$ coverage report
Name       Stmts   Miss  Cover
------------------------------
__init__       0      0   100%
manage        11      4    64%
settings      24      0   100%
------------------------------
TOTAL         35      4    89%

什么操作系统、Django 和覆盖版本等？您的项目中还有其他异常情况吗？

单独测量 runserver 可能不是您想要的，您可能只测量监视文件更改和重新启动服务器的代码。具有覆盖率支持的 Django 测试运行器可能更适合您的需求。

更新:

提供 --noreload 开关可以覆盖测量所有代码。