fix(settings): define a 'heartbeat' route, so SecurityHeaders can handle redirected root

Signed-off-by: Steve Mokris <steve@kosada.com>

Author: smokris

core/routes.php

@@ -40,3 +40,5 @@
 // Routing
 $this->create('core_ajax_update', '/core/ajax/update.php')
 	->actionInclude('core/ajax/update.php');
+
+$this->create('heartbeat', '/heartbeat')->get();

tests/lib/Route/RouterTest.php

@@ -39,7 +39,10 @@
  * @package Test\Route
  */
 class RouterTest extends TestCase {
-	public function testGenerateConsecutively(): void {
+	/** @var Router */
+	private $router;
+	protected function setUp(): void {
+		parent::setUp();
 		/** @var LoggerInterface $logger */
 		$logger = $this->createMock(LoggerInterface::class);
 		$logger->method('info')
@@ -48,20 +51,27 @@ function (string $message, array $data) {
 					$this->fail('Unexpected info log: '.(string)($data['exception'] ?? $message));
 				}
 			);
-		$router = new Router(
+		$this->router = new Router(
 			$logger,
 			$this->createMock(IRequest::class),
 			$this->createMock(IConfig::class),
 			$this->createMock(IEventLogger::class),
 			$this->createMock(ContainerInterface::class),
 		);
+	}
+
+	public function testHeartbeat(): void {
+		$this->assertEquals('/index.php/heartbeat', $this->router->generate('heartbeat'));
+	}
+
+	public function testGenerateConsecutively(): void {
 
-		$this->assertEquals('/index.php/apps/files/', $router->generate('files.view.index'));
+		$this->assertEquals('/index.php/apps/files/', $this->router->generate('files.view.index'));
 
 		// the OCS route is the prefixed one for the AppFramework - see /ocs/v1.php for routing details
-		$this->assertEquals('/index.php/ocsapp/apps/dav/api/v1/direct', $router->generate('ocs.dav.direct.getUrl'));
+		$this->assertEquals('/index.php/ocsapp/apps/dav/api/v1/direct', $this->router->generate('ocs.dav.direct.getUrl'));
 
 		// test caching
-		$this->assertEquals('/index.php/apps/files/', $router->generate('files.view.index'));
+		$this->assertEquals('/index.php/apps/files/', $this->router->generate('files.view.index'));
 	}
 }