多个模块的Python单元测试覆盖率 [英] Python unit test coverage for multiple modules

问题描述

我搜索了很长时间，但出乎意料的是，没有找到满意的答案.

我的Python项目中有多个模块/文件，我编写了使用 unittest 的单元测试.这样的结构使得我在一个目录中(例如 myproject/production )具有生产模块 module_A.py 和 module_B.py 并进行相应的测试-将文件 test_module_A.py 和 test_module_B.py 放在同级目录中(例如 myproject/tests ).

现在，我已经安装了 coverage.py ，并希望运行与该项目相关的所有测试(即，所有前缀为 test_ (来自 tests 目录)，并收到一份覆盖率报告，其中显示了所有生产模块( module_A.py 和 module_B.py >).

我发现可以通过从 myproject/tests 目录运行以下命令来做到这一点:

• 覆盖擦除
• coverage run -a --source myproject.production test_module_A.py
• coverage run -a --source myproject.production test_module_B.py
• 覆盖率报告

这给了我一张不错的表格，其中列出了我所有的生产模块及其覆盖范围.到目前为止一切顺利.

但是我可以只用一个命令来执行此操作吗?假设我没有要包含在一个报告中的2个或20个或200个测试，那么手工"执行此操作似乎很荒谬.

必须有一种自动化的方法，但是我似乎找不到它.当然，shell脚本可以做到这一点，但这相当笨拙.我正在考虑类似于 unittest discover 的方法，但是对于 coverage.py 来说，这似乎不起作用.

或者我可以使用coverage-API来完成此操作吗?到目前为止，我没有运气尝试.

.

解决方案:(感谢Ned Batchelder先生)

从 myproject/tests 目录运行:

coverage run --source myproject.production -m unittest discover&&覆盖率报告

一行，完全按照需要做.

解决方案

这应该做到:

  coverage.py运行-m unittest发现 

I searched for a long time and surprisingly found no satisfactory answer.

I have multiple modules/files in my Python project that I wrote unit tests for using unittest. The structure is such that I have production-modules module_A.py and module_B.py in one directory (say myproject/production) and corresponding test-files test_module_A.py and test_module_B.py in a sibling directory (say myproject/tests).

Now I have coverage.py installed and want to run all the tests associated with the project (i.e. all .py-files with the prefix test_ from the tests directory) and receive a coverage report showing the coverage for all the production-modules (module_A.py and module_B.py).

I figured out that I can do this by running the following commands from the myproject/tests directory:

• coverage erase
• coverage run -a --source myproject.production test_module_A.py
• coverage run -a --source myproject.production test_module_B.py
• coverage report

This gives me that nice table with all my production modules listed and their coverage results. So far so good.

But can I do this with just one command? Assuming I have not 2 but 20 or 200 tests that I want to include in one report, doing this "by hand" seems ridiculous.

There must be a way to automate this, but I can't seem to find it. Sure a shell-script might do it, but that is rather clumsy. I am thinking of something akin to unittest discover, but for coverage.py this doesn't seem to work.

Or could I accomplish this using the coverage-API somehow? So far I had no luck trying.

.

SOLUTION: (credit to Mr. Ned Batchelder)

From myproject/tests directory run:

coverage run --source myproject.production -m unittest discover && coverage report

One line, doing exactly what was needed.

解决方案

This should do it:

coverage.py run -m unittest discover

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