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MediaWikiCoversValidator.php
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MediaWikiCoversValidator.php
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<?php
/**
* Copyright (C) 2017 Kunal Mehta <legoktm@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
use PHPUnit\Framework\CodeCoverageException;
use PHPUnit\Util\Test;
/**
* Check that `@covers` tags are valid. PHPUnit only does this when generating
* code coverage reports, which is slow and we generally don't do that when
* running tests during development and pre-merge in CI.
*
* @since 1.31
*/
trait MediaWikiCoversValidator {
/**
* Assert that all "test*" methods in the host class have valid `@covers` tags.
*
* Don't use a data provider here because this assertion will be run many
* thousands of times in CI, and the implicit overhead from PHPUnit with
* generating and executing a test case around each becomes rather significant
* at that scale. Also, when using a data provider, the setUp() and tearDown()
* of the host class would be re-run for every check, which becomes very
* expensive for integration tests that involve databases.
* @coversNothing
*/
public function testValidCovers() {
$class = static::class;
foreach ( get_class_methods( $this ) as $method ) {
if ( str_starts_with( $method, 'test' ) ) {
try {
Test::getLinesToBeCovered( $class, $method );
} catch ( CodeCoverageException $ex ) {
$this->fail( "$class::$method: " . $ex->getMessage() );
}
}
}
$this->addToAssertionCount( 1 );
}
}

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