RouteProviderTest.php

<?php


/**
 * @file
 * Contains \Drupal\KernelTests\Core\Routing\RouteProviderTest.
 */
namespace Drupal\KernelTests\Core\Routing;

use Drupal\Core\Cache\MemoryBackend;
use Drupal\Core\Database\Database;
use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\KeyValueStore\KeyValueMemoryFactory;
use Drupal\Core\Path\CurrentPathStack;
use Drupal\Core\Routing\MatcherDumper;
use Drupal\Core\Routing\RouteProvider;
use Drupal\Core\State\State;
use Drupal\KernelTests\KernelTestBase;
use Drupal\language\Entity\ConfigurableLanguage;
use Drupal\Tests\Core\Routing\RoutingFixtures;
use Drupal\Tests\Traits\Core\PathAliasTestTrait;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\Routing\Exception\ResourceNotFoundException;
use Symfony\Component\Routing\Exception\RouteNotFoundException;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RouteCollection;

/**
 * Confirm that the default route provider is working correctly.
 *
 * @group Routing
 */
class RouteProviderTest extends KernelTestBase {
    use PathAliasTestTrait;
    
    /**
     * Modules to enable.
     */
    public static $modules = [
        'url_alter_test',
        'system',
        'language',
        'path_alias',
    ];
    
    /**
     * A collection of shared fixture data for tests.
     *
     * @var \Drupal\Tests\Core\Routing\RoutingFixtures
     */
    protected $fixtures;
    
    /**
     * The state.
     *
     * @var \Drupal\Core\State\StateInterface
     */
    protected $state;
    
    /**
     * The current path.
     *
     * @var \Drupal\Core\Path\CurrentPathStack
     */
    protected $currentPath;
    
    /**
     * The cache backend.
     *
     * @var \Drupal\Core\Cache\MemoryBackend
     */
    protected $cache;
    
    /**
     * The inbound path processor.
     *
     * @var \Drupal\Core\PathProcessor\InboundPathProcessorInterface
     */
    protected $pathProcessor;
    
    /**
     * The cache tags invalidator.
     *
     * @var \Drupal\Core\Cache\CacheTagsInvalidatorInterface
     */
    protected $cacheTagsInvalidator;
    protected function setUp() {
        parent::setUp();
        $this->fixtures = new RoutingFixtures();
        $this->state = new State(new KeyValueMemoryFactory());
        $this->currentPath = new CurrentPathStack(new RequestStack());
        $this->cache = new MemoryBackend();
        $this->pathProcessor = \Drupal::service('path_processor_manager');
        $this->cacheTagsInvalidator = \Drupal::service('cache_tags.invalidator');
        $this->installEntitySchema('path_alias');
    }
    
    /**
     * {@inheritdoc}
     */
    public function register(ContainerBuilder $container) {
        parent::register($container);
        // Read the incoming path alias for these tests.
        if ($container->hasDefinition('path_alias.path_processor')) {
            $definition = $container->getDefinition('path_alias.path_processor');
            $definition->addTag('path_processor_inbound');
        }
    }
    protected function tearDown() {
        $this->fixtures
            ->dropTables(Database::getConnection());
        parent::tearDown();
    }
    
    /**
     * Confirms that the correct candidate outlines are generated.
     */
    public function testCandidateOutlines() {
        $connection = Database::getConnection();
        $provider = new TestRouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $parts = [
            'node',
            '5',
            'edit',
        ];
        $candidates = $provider->getCandidateOutlines($parts);
        $candidates = array_flip($candidates);
        $this->assertCount(7, $candidates, 'Correct number of candidates found');
        $this->assertArrayHasKey('/node/5/edit', $candidates);
        $this->assertArrayHasKey('/node/5/%', $candidates);
        $this->assertArrayHasKey('/node/%/edit', $candidates);
        $this->assertArrayHasKey('/node/%/%', $candidates);
        $this->assertArrayHasKey('/node/5', $candidates);
        $this->assertArrayHasKey('/node/%', $candidates);
        $this->assertArrayHasKey('/node', $candidates);
    }
    
    /**
     * Don't fail when given an empty path.
     */
    public function testEmptyPathCandidatesOutlines() {
        $provider = new TestRouteProvider(Database::getConnection(), $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $candidates = $provider->getCandidateOutlines([]);
        $this->assertCount(0, $candidates, 'Empty parts should return no candidates.');
    }
    
    /**
     * Confirms that we can find routes with the exact incoming path.
     */
    public function testExactPathMatch() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->sampleRouteCollection());
        $dumper->dump();
        $path = '/path/one';
        $request = Request::create($path, 'GET');
        $routes = $provider->getRouteCollectionForRequest($request);
        foreach ($routes as $route) {
            $this->assertEqual($route->getPath(), $path, 'Found path has correct pattern');
        }
    }
    
    /**
     * Confirms that we can find routes whose pattern would match the request.
     */
    public function testOutlinePathMatch() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->complexRouteCollection());
        $dumper->dump();
        $path = '/path/1/one';
        $request = Request::create($path, 'GET');
        $routes = $provider->getRouteCollectionForRequest($request);
        // All of the matching paths have the correct pattern.
        foreach ($routes as $route) {
            $this->assertEqual($route->compile()
                ->getPatternOutline(), '/path/%/one', 'Found path has correct pattern');
        }
        $this->assertCount(2, $routes, 'The correct number of routes was found.');
        $this->assertNotNull($routes->get('route_a'), 'The first matching route was found.');
        $this->assertNotNull($routes->get('route_b'), 'The second matching route was not found.');
    }
    
    /**
     * Data provider for testMixedCasePaths()
     */
    public function providerMixedCaseRoutePaths() {
        return [
            [
                '/path/one',
                'route_a',
            ],
            [
                '/path/two',
                NULL,
            ],
            [
                '/PATH/one',
                'route_a',
            ],
            [
                '/path/2/one',
                'route_b',
                'PUT',
            ],
            [
                '/paTH/3/one',
                'route_b',
                'PUT',
            ],
            // There should be no lower case of a Hebrew letter.
[
                '/somewhere/4/over/the/קainbow',
                'route_c',
            ],
            [
                '/Somewhere/5/over/the/קainboW',
                'route_c',
            ],
            [
                '/another/llama/aboUT/22',
                'route_d',
            ],
            [
                '/another/llama/about/22',
                'route_d',
            ],
            [
                '/place/meΦω',
                'route_e',
                'HEAD',
            ],
            [
                '/place/meφΩ',
                'route_e',
                'HEAD',
            ],
        ];
    }
    
    /**
     * Confirms that we find routes using a case-insensitive path match.
     *
     * @dataProvider providerMixedCaseRoutePaths
     */
    public function testMixedCasePaths($path, $expected_route_name, $method = 'GET') {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->mixedCaseRouteCollection());
        $dumper->dump();
        $request = Request::create($path, $method);
        $routes = $provider->getRouteCollectionForRequest($request);
        if ($expected_route_name) {
            $this->assertCount(1, $routes, 'The correct number of routes was found.');
            $this->assertNotNull($routes->get($expected_route_name), 'The first matching route was found.');
        }
        else {
            $this->assertCount(0, $routes, 'No routes matched.');
        }
    }
    
    /**
     * Data provider for testMixedCasePaths()
     */
    public function providerDuplicateRoutePaths() {
        // When matching routes with the same fit the route with the lowest-sorting
        // name should end up first in the resulting route collection.
        return [
            [
                '/path/one',
                3,
                'route_a',
            ],
            [
                '/PATH/one',
                3,
                'route_a',
            ],
            [
                '/path/two',
                1,
                'route_d',
            ],
            [
                '/PATH/three',
                0,
            ],
            [
                '/place/meΦω',
                2,
                'route_e',
            ],
            [
                '/placE/meφΩ',
                2,
                'route_e',
            ],
        ];
    }
    
    /**
     * Confirms that we find all routes with the same path.
     *
     * @dataProvider providerDuplicateRoutePaths
     */
    public function testDuplicateRoutePaths($path, $number, $expected_route_name = NULL) {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->duplicatePathsRouteCollection());
        $dumper->dump();
        $request = Request::create($path);
        $routes = $provider->getRouteCollectionForRequest($request);
        $this->assertEquals($number, count($routes), 'The correct number of routes was found.');
        if ($expected_route_name) {
            $route_name = key(current($routes));
            $this->assertEquals($expected_route_name, $route_name, 'The expected route name was found.');
        }
    }
    
    /**
     * Confirms that a trailing slash on the request does not result in a 404.
     */
    public function testOutlinePathMatchTrailingSlash() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->complexRouteCollection());
        $dumper->dump();
        $path = '/path/1/one/';
        $request = Request::create($path, 'GET');
        $routes = $provider->getRouteCollectionForRequest($request);
        // All of the matching paths have the correct pattern.
        foreach ($routes as $route) {
            $this->assertEqual($route->compile()
                ->getPatternOutline(), '/path/%/one', 'Found path has correct pattern');
        }
        $this->assertCount(2, $routes, 'The correct number of routes was found.');
        $this->assertNotNull($routes->get('route_a'), 'The first matching route was found.');
        $this->assertNotNull($routes->get('route_b'), 'The second matching route was not found.');
    }
    
    /**
     * Confirms that we can find routes whose pattern would match the request.
     */
    public function testOutlinePathMatchDefaults() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $collection = new RouteCollection();
        $collection->add('poink', new Route('/some/path/{value}', [
            'value' => 'poink',
        ]));
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($collection);
        $dumper->dump();
        $path = '/some/path';
        $request = Request::create($path, 'GET');
        try {
            $routes = $provider->getRouteCollectionForRequest($request);
            // All of the matching paths have the correct pattern.
            foreach ($routes as $route) {
                $this->assertEqual($route->compile()
                    ->getPatternOutline(), '/some/path', 'Found path has correct pattern');
            }
            $this->assertCount(1, $routes, 'The correct number of routes was found.');
            $this->assertNotNull($routes->get('poink'), 'The first matching route was found.');
        } catch (ResourceNotFoundException $e) {
            $this->fail('No matching route found with default argument value.');
        }
    }
    
    /**
     * Confirms that we can find routes whose pattern would match the request.
     */
    public function testOutlinePathMatchDefaultsCollision() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $collection = new RouteCollection();
        $collection->add('poink', new Route('/some/path/{value}', [
            'value' => 'poink',
        ]));
        $collection->add('narf', new Route('/some/path/here'));
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($collection);
        $dumper->dump();
        $path = '/some/path';
        $request = Request::create($path, 'GET');
        try {
            $routes = $provider->getRouteCollectionForRequest($request);
            // All of the matching paths have the correct pattern.
            foreach ($routes as $route) {
                $this->assertEqual($route->compile()
                    ->getPatternOutline(), '/some/path', 'Found path has correct pattern');
            }
            $this->assertCount(1, $routes, 'The correct number of routes was found.');
            $this->assertNotNull($routes->get('poink'), 'The first matching route was found.');
        } catch (ResourceNotFoundException $e) {
            $this->fail('No matching route found with default argument value.');
        }
    }
    
    /**
     * Confirms that we can find routes whose pattern would match the request.
     */
    public function testOutlinePathMatchDefaultsCollision2() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $collection = new RouteCollection();
        $collection->add('poink', new Route('/some/path/{value}', [
            'value' => 'poink',
        ]));
        $collection->add('narf', new Route('/some/path/here'));
        $collection->add('eep', new Route('/something/completely/different'));
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($collection);
        $dumper->dump();
        $path = '/some/path/here';
        $request = Request::create($path, 'GET');
        try {
            $routes = $provider->getRouteCollectionForRequest($request);
            $routes_array = $routes->all();
            $this->assertCount(2, $routes, 'The correct number of routes was found.');
            $this->assertEqual([
                'narf',
                'poink',
            ], array_keys($routes_array), 'Ensure the fitness was taken into account.');
            $this->assertNotNull($routes->get('narf'), 'The first matching route was found.');
            $this->assertNotNull($routes->get('poink'), 'The second matching route was found.');
            $this->assertNull($routes->get('eep'), 'Non-matching route was not found.');
        } catch (ResourceNotFoundException $e) {
            $this->fail('No matching route found with default argument value.');
        }
    }
    
    /**
     * Confirms that we can find multiple routes that match the request equally.
     */
    public function testOutlinePathMatchDefaultsCollision3() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $collection = new RouteCollection();
        $collection->add('poink', new Route('/some/{value}/path'));
        // Add a second route matching the same path pattern.
        $collection->add('poink2', new Route('/some/{object}/path'));
        $collection->add('narf', new Route('/some/here/path'));
        $collection->add('eep', new Route('/something/completely/different'));
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($collection);
        $dumper->dump();
        $path = '/some/over-there/path';
        $request = Request::create($path, 'GET');
        try {
            $routes = $provider->getRouteCollectionForRequest($request);
            $routes_array = $routes->all();
            $this->assertCount(2, $routes, 'The correct number of routes was found.');
            $this->assertEqual([
                'poink',
                'poink2',
            ], array_keys($routes_array), 'Ensure the fitness and name were taken into account in the sort.');
            $this->assertNotNull($routes->get('poink'), 'The first matching route was found.');
            $this->assertNotNull($routes->get('poink2'), 'The second matching route was found.');
            $this->assertNull($routes->get('eep'), 'Non-matching route was not found.');
        } catch (ResourceNotFoundException $e) {
            $this->fail('No matching route found with default argument value.');
        }
    }
    
    /**
     * Tests a route with a 0 as value.
     */
    public function testOutlinePathMatchZero() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $collection = new RouteCollection();
        $collection->add('poink', new Route('/some/path/{value}'));
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($collection);
        $dumper->dump();
        $path = '/some/path/0';
        $request = Request::create($path, 'GET');
        try {
            $routes = $provider->getRouteCollectionForRequest($request);
            // All of the matching paths have the correct pattern.
            foreach ($routes as $route) {
                $this->assertEqual($route->compile()
                    ->getPatternOutline(), '/some/path/%', 'Found path has correct pattern');
            }
            $this->assertCount(1, $routes, 'The correct number of routes was found.');
        } catch (ResourceNotFoundException $e) {
            $this->fail('No matchout route found with 0 as argument value');
        }
    }
    
    /**
     * Confirms that an exception is thrown when no matching path is found.
     */
    public function testOutlinePathNoMatch() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->complexRouteCollection());
        $dumper->dump();
        $path = '/no/such/path';
        $request = Request::create($path, 'GET');
        $routes = $provider->getRoutesByPattern($path);
        $this->assertEmpty($routes, 'No path found with this pattern.');
        $collection = $provider->getRouteCollectionForRequest($request);
        $this->assertEmpty($collection, 'Empty route collection found with this pattern.');
    }
    
    /**
     * Tests that route caching works.
     */
    public function testRouteCaching() {
        $connection = Database::getConnection();
        $language_manager = \Drupal::languageManager();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes', $language_manager);
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->sampleRouteCollection());
        $dumper->addRoutes($this->fixtures
            ->complexRouteCollection());
        $dumper->dump();
        // A simple path.
        $path = '/path/add/one';
        $request = Request::create($path, 'GET');
        $provider->getRouteCollectionForRequest($request);
        $cache = $this->cache
            ->get('route:[language]=en:/path/add/one:');
        $this->assertEqual('/path/add/one', $cache->data['path']);
        $this->assertEqual([], $cache->data['query']);
        $this->assertCount(3, $cache->data['routes']);
        // A path with query parameters.
        $path = '/path/add/one?foo=bar';
        $request = Request::create($path, 'GET');
        $provider->getRouteCollectionForRequest($request);
        $cache = $this->cache
            ->get('route:[language]=en:/path/add/one:foo=bar');
        $this->assertEqual('/path/add/one', $cache->data['path']);
        $this->assertEqual([
            'foo' => 'bar',
        ], $cache->data['query']);
        $this->assertCount(3, $cache->data['routes']);
        // A path with placeholders.
        $path = '/path/1/one';
        $request = Request::create($path, 'GET');
        $provider->getRouteCollectionForRequest($request);
        $cache = $this->cache
            ->get('route:[language]=en:/path/1/one:');
        $this->assertEqual('/path/1/one', $cache->data['path']);
        $this->assertEqual([], $cache->data['query']);
        $this->assertCount(2, $cache->data['routes']);
        // A path with a path alias.
        $this->createPathAlias('/path/add/one', '/path/add-one');
        
        /** @var \Drupal\path_alias\AliasManagerInterface $alias_manager */
        $alias_manager = \Drupal::service('path_alias.manager');
        $alias_manager->cacheClear();
        $path = '/path/add-one';
        $request = Request::create($path, 'GET');
        $provider->getRouteCollectionForRequest($request);
        $cache = $this->cache
            ->get('route:[language]=en:/path/add-one:');
        $this->assertEqual('/path/add/one', $cache->data['path']);
        $this->assertEqual([], $cache->data['query']);
        $this->assertCount(3, $cache->data['routes']);
        // Test with a different current language by switching out the default
        // language.
        $swiss = ConfigurableLanguage::createFromLangcode('gsw-berne');
        $language_manager->reset();
        \Drupal::service('language.default')->set($swiss);
        $path = '/path/add-one';
        $request = Request::create($path, 'GET');
        $provider->getRouteCollectionForRequest($request);
        $cache = $this->cache
            ->get('route:[language]=gsw-berne:/path/add-one:');
        $this->assertEquals('/path/add/one', $cache->data['path']);
        $this->assertEquals([], $cache->data['query']);
        $this->assertCount(3, $cache->data['routes']);
    }
    
    /**
     * Test RouteProvider::getRouteByName() and RouteProvider::getRoutesByNames().
     */
    public function testRouteByName() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->sampleRouteCollection());
        $dumper->dump();
        $route = $provider->getRouteByName('route_a');
        $this->assertEqual($route->getPath(), '/path/one', 'The right route pattern was found.');
        $this->assertEqual($route->getMethods(), [
            'GET',
        ], 'The right route method was found.');
        $route = $provider->getRouteByName('route_b');
        $this->assertEqual($route->getPath(), '/path/one', 'The right route pattern was found.');
        $this->assertEqual($route->getMethods(), [
            'PUT',
        ], 'The right route method was found.');
        $exception_thrown = FALSE;
        try {
            $provider->getRouteByName('invalid_name');
        } catch (RouteNotFoundException $e) {
            $exception_thrown = TRUE;
        }
        $this->assertTrue($exception_thrown, 'Random route was not found.');
        $routes = $provider->getRoutesByNames([
            'route_c',
            'route_d',
            $this->randomMachineName(),
        ]);
        $this->assertCount(2, $routes, 'Only two valid routes found.');
        $this->assertEqual($routes['route_c']->getPath(), '/path/two');
        $this->assertEqual($routes['route_d']->getPath(), '/path/three');
    }
    
    /**
     * Ensures that the routing system is capable of extreme long patterns.
     */
    public function testGetRoutesByPatternWithLongPatterns() {
        $connection = Database::getConnection();
        $provider = new TestRouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        // This pattern has only 3 parts, so we will get candidates, but no routes,
        // even though we have not dumped the routes yet.
        $shortest = '/test/1/test2';
        $result = $provider->getRoutesByPattern($shortest);
        $this->assertEqual($result->count(), 0);
        $candidates = $provider->getCandidateOutlines(explode('/', trim($shortest, '/')));
        $this->assertCount(7, $candidates);
        // A longer patten is not found and returns no candidates
        $path_to_test = '/test/1/test2/2/test3/3/4/5/6/test4';
        $result = $provider->getRoutesByPattern($path_to_test);
        $this->assertEqual($result->count(), 0);
        $candidates = $provider->getCandidateOutlines(explode('/', trim($path_to_test, '/')));
        $this->assertCount(0, $candidates);
        // Add a matching route and dump it.
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $collection = new RouteCollection();
        $collection->add('long_pattern', new Route('/test/{v1}/test2/{v2}/test3/{v3}/{v4}/{v5}/{v6}/test4'));
        $dumper->addRoutes($collection);
        $dumper->dump();
        $result = $provider->getRoutesByPattern($path_to_test);
        $this->assertEqual($result->count(), 1);
        // We can't compare the values of the routes directly, nor use
        // spl_object_hash() because they are separate instances.
        $this->assertEqual(serialize($result->get('long_pattern')), serialize($collection->get('long_pattern')), 'The right route was found.');
        // We now have a single candidate outline.
        $candidates = $provider->getCandidateOutlines(explode('/', trim($path_to_test, '/')));
        $this->assertCount(1, $candidates);
        // Longer and shorter patterns are not found. Both are longer than 3, so
        // we should not have any candidates either. The fact that we do not
        // get any candidates for a longer path is a security feature.
        $longer = '/test/1/test2/2/test3/3/4/5/6/test4/trailing/more/parts';
        $result = $provider->getRoutesByPattern($longer);
        $this->assertEqual($result->count(), 0);
        $candidates = $provider->getCandidateOutlines(explode('/', trim($longer, '/')));
        $this->assertCount(1, $candidates);
        $shorter = '/test/1/test2/2/test3';
        $result = $provider->getRoutesByPattern($shorter);
        $this->assertEqual($result->count(), 0);
        $candidates = $provider->getCandidateOutlines(explode('/', trim($shorter, '/')));
        $this->assertCount(0, $candidates);
        // This pattern has only 3 parts, so we will get candidates, but no routes.
        // This result is unchanged by running the dumper.
        $result = $provider->getRoutesByPattern($shortest);
        $this->assertEqual($result->count(), 0);
        $candidates = $provider->getCandidateOutlines(explode('/', trim($shortest, '/')));
        $this->assertCount(7, $candidates);
    }
    
    /**
     * Tests getRoutesPaged().
     */
    public function testGetRoutesPaged() {
        $connection = Database::getConnection();
        $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
        $this->fixtures
            ->createTables($connection);
        $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
        $dumper->addRoutes($this->fixtures
            ->sampleRouteCollection());
        $dumper->dump();
        $fixture_routes = $this->fixtures
            ->staticSampleRouteCollection();
        // Query all the routes.
        $routes = $provider->getRoutesPaged(0);
        $this->assertEqual(array_keys($routes), array_keys($fixture_routes));
        // Query non routes.
        $routes = $provider->getRoutesPaged(0, 0);
        $this->assertEqual(array_keys($routes), []);
        // Query a limited sets of routes.
        $routes = $provider->getRoutesPaged(1, 2);
        $this->assertEqual(array_keys($routes), array_slice(array_keys($fixture_routes), 1, 2));
    }

}
class TestRouteProvider extends RouteProvider {
    public function getCandidateOutlines(array $parts) {
        return parent::getCandidateOutlines($parts);
    }

}