class LockFileValidatorTest

class LockFileValidatorTest extends PackageManagerKernelTestBase {
    
    /**
     * The path of the active directory in the test project.
     *
     * @var string
     */
    private $activeDir;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->activeDir = $this->container
            ->get(PathLocator::class)
            ->getProjectRoot();
    }
    
    /**
     * {@inheritdoc}
     */
    public function register(ContainerBuilder $container) : void {
        parent::register($container);
        // Temporarily mock the Composer inspector to prevent it from complaining
        // over the lack of a lock file if it's invoked by other validators.
        $inspector = $this->prophesize(ComposerInspector::class);
        $arguments = Argument::cetera();
        $inspector->getConfig('allow-plugins', $arguments)
            ->willReturn('[]');
        $inspector->getConfig('secure-http', $arguments)
            ->willReturn('true');
        $inspector->getConfig('disable-tls', $arguments)
            ->willReturn('false');
        $inspector->getConfig('extra', $arguments)
            ->willReturn('{}');
        $inspector->getConfig('minimum-stability', $arguments)
            ->willReturn('stable');
        $inspector->getInstalledPackagesList($arguments)
            ->willReturn(new InstalledPackagesList());
        $inspector->getAllowPluginsConfig($arguments)
            ->willReturn([]);
        $inspector->validate($arguments);
        $inspector->getRootPackageInfo($arguments)
            ->willReturn([]);
        $container->set(ComposerInspector::class, $inspector->reveal());
    }
    
    /**
     * Tests that if no active lock file exists, a stage cannot be created.
     *
     * @covers ::storeHash
     */
    public function testCreateWithNoLock() : void {
        unlink($this->activeDir . '/composer.lock');
        $project_root = $this->container
            ->get(PathLocator::class)
            ->getProjectRoot();
        $lock_file_path = $project_root . DIRECTORY_SEPARATOR . 'composer.lock';
        $no_lock = ValidationResult::createError([
            t('The active lock file (@file) does not exist.', [
                '@file' => $lock_file_path,
            ]),
        ]);
        $stage = $this->assertResults([
            $no_lock,
        ], PreCreateEvent::class);
        // The stage was not created successfully, so the status check should be
        // clear.
        $this->assertStatusCheckResults([], $stage);
    }
    
    /**
     * Tests that if an active lock file exists, a stage can be created.
     *
     * @covers ::storeHash
     * @covers ::deleteHash
     */
    public function testCreateWithLock() : void {
        $this->assertResults([]);
        // Change the lock file to ensure the stored hash of the previous version
        // has been deleted.
        file_put_contents($this->activeDir . '/composer.lock', '{"changed": true}');
        $this->assertResults([]);
    }
    
    /**
     * Tests validation when the lock file has changed.
     *
     * @dataProvider providerValidateStageEvents
     */
    public function testLockFileChanged(string $event_class) : void {
        // Add a listener with an extremely high priority to the same event that
        // should raise the validation error. Because the validator uses the default
        // priority of 0, this listener changes lock file before the validator
        // runs.
        $this->addEventTestListener(function () {
            $lock = json_decode(file_get_contents($this->activeDir . '/composer.lock'), TRUE, flags: JSON_THROW_ON_ERROR);
            $lock['extra']['key'] = 'value';
            file_put_contents($this->activeDir . '/composer.lock', json_encode($lock, JSON_THROW_ON_ERROR));
        }, $event_class);
        $result = ValidationResult::createError([
            t('Unexpected changes were detected in the active lock file (@file), which indicates that other Composer operations were performed since this Package Manager operation started. This can put the code base into an unreliable state and therefore is not allowed.', [
                '@file' => $this->activeDir . '/composer.lock',
            ]),
        ], t('Problem detected in lock file during stage operations.'));
        $stage = $this->assertResults([
            $result,
        ], $event_class);
        // A status check should agree that there is an error here.
        $this->assertStatusCheckResults([
            $result,
        ], $stage);
    }
    
    /**
     * Tests validation when the lock file is deleted.
     *
     * @dataProvider providerValidateStageEvents
     */
    public function testLockFileDeleted(string $event_class) : void {
        // Add a listener with an extremely high priority to the same event that
        // should raise the validation error. Because the validator uses the default
        // priority of 0, this listener deletes lock file before the validator
        // runs.
        $this->addEventTestListener(function () {
            unlink($this->activeDir . '/composer.lock');
        }, $event_class);
        $result = ValidationResult::createError([
            t('The active lock file (@file) does not exist.', [
                '@file' => $this->activeDir . '/composer.lock',
            ]),
        ], t('Problem detected in lock file during stage operations.'));
        $stage = $this->assertResults([
            $result,
        ], $event_class);
        // A status check should agree that there is an error here.
        $this->assertStatusCheckResults([
            $result,
        ], $stage);
    }
    
    /**
     * Tests exception when a stored hash of the active lock file is unavailable.
     *
     * @dataProvider providerValidateStageEvents
     */
    public function testNoStoredHash(string $event_class) : void {
        $reflector = new \ReflectionClassConstant(LockFileValidator::class, 'KEY');
        $key = $reflector->getValue();
        // Add a listener with an extremely high priority to the same event that
        // should throw an exception. Because the validator uses the default
        // priority of 0, this listener deletes stored hash before the validator
        // runs.
        $this->addEventTestListener(function () use ($key) {
            $this->container
                ->get('keyvalue')
                ->get('package_manager')
                ->delete($key);
        }, $event_class);
        $stage = $this->createStage();
        $stage->create();
        try {
            $stage->require([
                'drupal/core:9.8.1',
            ]);
            $stage->apply();
        } catch (StageException $e) {
            $this->assertSame(\LogicException::class, $e->getPrevious()::class);
            $this->assertSame('Stored hash key deleted.', $e->getMessage());
        }
    }
    
    /**
     * Tests validation when the staged and active lock files are identical.
     */
    public function testApplyWithNoChange() : void {
        // Leave the staged lock file alone.
        NoOpStager::setLockFileShouldChange(FALSE);
        $result = ValidationResult::createError([
            t('There appear to be no pending Composer operations because the active lock file (<PROJECT_ROOT>/composer.lock) and the staged lock file (<STAGE_DIR>/composer.lock) are identical.'),
        ], t('Problem detected in lock file during stage operations.'));
        $stage = $this->assertResults([
            $result,
        ], PreApplyEvent::class);
        // A status check shouldn't produce raise any errors, because it's only
        // during pre-apply that we care if there are any pending Composer
        // operations.
        $this->assertStatusCheckResults([], $stage);
    }
    
    /**
     * Tests StatusCheckEvent when the stage is available.
     */
    public function testStatusCheckAvailableStage() : void {
        $this->assertStatusCheckResults([]);
    }
    
    /**
     * Data provider for test methods that validate the stage directory.
     *
     * @return string[][]
     *   The test cases.
     */
    public static function providerValidateStageEvents() : array {
        return [
            'pre-require' => [
                PreRequireEvent::class,
            ],
            'pre-apply' => [
                PreApplyEvent::class,
            ],
        ];
    }

}