class TestControllers

class TestControllers {
    
    /**
     * Returns page to be used as a login path.
     */
    public function testLogin() {
        return [
            '#markup' => 'This is TestControllers::testLogin.',
        ];
    }
    
    /**
     * Prints out test data.
     */
    public function test1() {
        return [
            '#markup' => 'test1',
        ];
    }
    
    /**
     * Prints out test data.
     */
    public function test2() {
        return [
            '#markup' => 'test2',
        ];
    }
    
    /**
     * Prints out test data.
     *
     * @param \Symfony\Component\HttpFoundation\Request $request
     *   The request.
     *
     * @return array
     *   Render array.
     */
    public function testSession(Request $request) {
        $counter = $request->getSession()
            ->get('menu_test', 0);
        $request->getSession()
            ->set('menu_test', ++$counter);
        return [
            '#markup' => new FormattableMarkup('Session menu_test is @count', [
                '@count' => $counter,
            ]),
        ];
    }
    
    /**
     * Prints out test data.
     */
    public function testDerived() {
        return [
            '#markup' => 'testDerived',
        ];
    }
    
    /**
     * Prints out test data.
     *
     * @param string|null $placeholder
     *   A placeholder for the return string.
     *
     * @return string
     *   The string for this route.
     */
    public function testDefaults($placeholder = NULL) {
        if ($placeholder) {
            return [
                '#markup' => new FormattableMarkup("Sometimes there is a placeholder: '@placeholder'.", [
                    '@placeholder' => $placeholder,
                ]),
            ];
        }
        else {
            return [
                '#markup' => 'Sometimes there is no placeholder.',
            ];
        }
    }
    
    /**
     * Prints out test data with contextual links.
     */
    public function testContextual() {
        return [
            '#markup' => 'testContextual',
            'stuff' => [
                '#type' => 'contextual_links',
                '#contextual_links' => [
                    'menu_test_menu' => [
                        'route_parameters' => [
                            'bar' => 1,
                        ],
                    ],
                ],
            ],
        ];
    }

}