--coverage-html时phpunit非常慢 [英] Phpunit very slow when --coverage-html

问题描述

Im使用Phpunit.如果我仅使用以下方式运行测试:

Im using Phpunit. If I just run my tests with:

phpunit --log-junit output.xml

phpunit --log-junit output.xml

这可以在一秒钟内完成.但是，如果我要覆盖代码:

this runs within a second. But if I want a code coverage:

phpunit --coverage-html ./report --log-junit output.xml

phpunit --coverage-html ./report --log-junit output.xml

然后非常缓慢，phpunit发送从 * .xml读取配置"，挂起一分钟，然后开始执行测试

then its very slow, the phpunit sends "Configuration read from *.xml" and it hangs for a minute, then it start executing the tests

推荐答案

默认情况下，即使您为单个测试运行PHPUnit，PHPUnit也会评估配置的白名单中所有文件的覆盖范围.

By default, PHPUnit will evaluate the coverage of all files in your configured whitelist, even when you run PHPUnit for a single test.

如果白名单中有很多文件，这可能会增加代码覆盖范围的时间.

If you have a lot files in your whitelist, this can add a LOT of time to the generation of the code coverage.

通过将PHPUnit配置为将addUncoveredFilesFromWhitelist属性设置为false，可以将PHPUnit配置为仅为您编写/执行测试的文件生成代码覆盖率，从而加快处理速度.

You can speed things up by configuring PHPUnit to generate code coverage only for the files you have written/execute tests for, by setting the addUncoveredFilesFromWhitelist attribute to false.

<phpunit>
    <!-- ... -->
    <filter>
        <whitelist addUncoveredFilesFromWhitelist="false">
            <!-- ... -->
        </whitelist>
    </filter>
</phpunit>

在禁用此设置的情况下，您应该看到生成的代码覆盖率文件仅描述了针对其运行测试的文件.

With this setting disabled, you should see that the resulting code coverage files only describe the files you ran the tests for.

请注意， PHPUnit文档建议addUncoveredFilesFromWhitelist默认为false，但在5.5版上，默认情况下为true.

Note that the PHPUnit documentation suggests addUncoveredFilesFromWhitelist is false by default, but on version 5.5 it appears to be true by default.

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