class PerformanceTest

class PerformanceTest extends PerformanceTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected $profile = 'standard';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Uninstall the toolbar.
        \Drupal::service('module_installer')->uninstall([
            'toolbar',
        ]);
        \Drupal::service('module_installer')->install([
            'navigation',
        ]);
    }
    
    /**
     * Tests performance of the navigation toolbar.
     */
    public function testLogin() : void {
        $user = $this->drupalCreateUser();
        $user->addRole('administrator');
        $user->save();
        $this->drupalLogin($user);
        // Request the front page twice to ensure all cache collectors are fully
        // warmed. The exact contents of cache collectors depends on the order in
        // which requests complete so this ensures that the second request completes
        // after asset aggregates are served.
        $this->drupalGet('');
        sleep(1);
        $this->drupalGet('');
        // Flush the dynamic page cache to simulate visiting a page that is not
        // already fully cached.
        \Drupal::cache('dynamic_page_cache')->deleteAll();
        $performance_data = $this->collectPerformanceData(function () {
            $this->drupalGet('');
        }, 'navigation');
        $expected_queries = [
            'SELECT "session" FROM "sessions" WHERE "sid" = "SESSION_ID" LIMIT 0, 1',
            'SELECT * FROM "users_field_data" "u" WHERE "u"."uid" = "2" AND "u"."default_langcode" = 1',
            'SELECT "roles_target_id" FROM "user__roles" WHERE "entity_id" = "2"',
            'SELECT "name", "value" FROM "key_value" WHERE "name" IN ( "theme:stark" ) AND "collection" = "config.entity.key_store.block"',
        ];
        $recorded_queries = $performance_data->getQueries();
        $this->assertSame($expected_queries, $recorded_queries);
        $this->assertSame(4, $performance_data->getQueryCount());
        $this->assertSame(60, $performance_data->getCacheGetCount());
        $this->assertSame(2, $performance_data->getCacheSetCount());
        $this->assertSame(0, $performance_data->getCacheDeleteCount());
        $this->assertSame(2, $performance_data->getCacheTagChecksumCount());
        $this->assertSame(29, $performance_data->getCacheTagIsValidCount());
        $this->assertSame(0, $performance_data->getCacheTagInvalidationCount());
        $this->assertSame(1, $performance_data->getStyleSheetCount());
        $this->assertSame(2, $performance_data->getScriptCount());
        $this->assertLessThan(90000, $performance_data->getStylesheetBytes());
        $this->assertLessThan(220000, $performance_data->getScriptBytes());
        // Check that the navigation toolbar is cached without any high-cardinality
        // cache contexts (user, route, query parameters etc.).
        $this->assertIsObject(\Drupal::cache('render')->get('navigation:navigation:[languages:language_interface]=en:[theme]=stark:[user.permissions]=is-admin'));
    }

}