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AllMutatorTest.php
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AllMutatorTest.php
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<?php
/**
* This code is licensed under the BSD 3-Clause License.
*
* Copyright (c) 2017-2019, Maks Rafalko
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
declare(strict_types=1);
namespace Infection\Tests\Mutator;
use Generator;
use Infection\Mutator\Util\Mutator;
use Infection\Mutator\Util\MutatorConfig;
use Infection\Mutator\Util\MutatorProfile;
use Infection\Tests\Fixtures\NullMutationVisitor;
use Infection\Visitor\FullyQualifiedClassNameVisitor;
use Infection\Visitor\NotMutableIgnoreVisitor;
use Infection\Visitor\ParentConnectorVisitor;
use Infection\Visitor\ReflectionVisitor;
use PhpParser\NodeTraverser;
use PhpParser\Parser;
use PhpParser\ParserFactory;
use PHPUnit\Framework\TestCase;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;
use Throwable;
/**
* @internal
*/
final class AllMutatorTest extends TestCase
{
/**
* @var Parser
*/
private static $parser;
public static function setUpBeforeClass(): void
{
self::$parser = (new ParserFactory())->create(ParserFactory::PREFER_PHP7);
}
/**
* This test only proves that the mutators do not crash on more 'exotic' code.
* It does not care whether or not the code is actually mutated, only if it does not error.
*
* @dataProvider provideMutatorAndCodeCases
*/
public function test_the_mutator_does_not_crash_during_parsing(string $code, Mutator $mutator, string $fileName): void
{
try {
$this->getMutationsFromCode($code, $mutator);
} catch (Throwable $t) {
$this->fail(sprintf(
'Ran into an error on the "%s" mutator, while parsing the file "%s". The original error was "%s"',
$mutator::getName(),
$fileName,
$t->getMessage()
));
}
$this->addToAssertionCount(1);
}
public function provideMutatorAndCodeCases(): Generator
{
foreach ($this->getCodeSamples() as $codeSample) {
foreach (MutatorProfile::FULL_MUTATOR_LIST as $mutator) {
yield [$codeSample->getContents(), new $mutator(new MutatorConfig([])), $codeSample->getFilename()];
}
}
}
/**
* @return SplFileInfo[]|Finder
*/
public function getCodeSamples()
{
return Finder::create()
->in(__DIR__ . '/../Fixtures/CodeSamples')
->name('*.php')
->files();
}
private function getMutationsFromCode(string $code, Mutator $mutator): void
{
$initialStatements = self::$parser->parse($code);
$traverser = new NodeTraverser();
$traverser->addVisitor(new NotMutableIgnoreVisitor());
$traverser->addVisitor(new ParentConnectorVisitor());
$traverser->addVisitor(new FullyQualifiedClassNameVisitor());
$traverser->addVisitor(new ReflectionVisitor());
$traverser->addVisitor(new NullMutationVisitor($mutator));
$traverser->traverse($initialStatements);
}
}