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Computing the coverage of tests can be done by running `./robo coverage`. Either [phpdbg](https://php.net/manual/en/book.phpdbg.php) or [Xdebug](https://xdebug.org) is required for this. An HTML-format coverage report will be written to `/tests/coverage/`. |
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Computing the coverage of tests can be done by running `./robo coverage`, after which an HTML-format coverage report will be written to `/tests/coverage/`. Either [Xdebug](https://xdebug.org) or [phpdbg](https://php.net/manual/en/book.phpdbg.php) is required for this. Xdebug is generally recommended as it is better maintained, though phpdbg is significantly faster. If using Xdebug, the extension need not be enabled globally; PHPUnit will enable it when needed. |