add test for sending request to check file info with invalid file id

tests/acceptance/TestHelpers/CollaborationHelper.php

@@ -0,0 +1,67 @@
+<?php declare(strict_types=1);
+/**
+ * ownCloud
+ *
+ * @author Amrita Shrestha <amrita@jankaritech.com>
+ * @copyright Copyright (c) 2024 Amrita Shrestha amrita@jankaritech.com
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License,
+ * as published by the Free Software Foundation;
+ * either version 3 of the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace TestHelpers;
+
+use GuzzleHttp\Exception\GuzzleException;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * A helper class for managing wopi requests
+ */
+class CollaborationHelper {
+
+	/**
+	 * @param string $fileId
+	 * @param string $app
+	 * @param string $username
+	 * @param string $password
+	 * @param string $baseUrl
+	 * @param string $xRequestId
+	 * @param string|null $viewMode
+	 *
+	 * @return ResponseInterface
+	 * @throws GuzzleException
+	 */
+	public static function sendPOSTRequestToAppOpen(
+		string $fileId,
+		string $app,
+		string $username,
+		string $password,
+		string $baseUrl,
+		string $xRequestId,
+		?string $viewMode = null,
+	): ResponseInterface {
+		$url = $baseUrl . "/app/open?app_name=$app&file_id=$fileId";
+		if ($viewMode) {
+			$url .= "&view_mode=$viewMode";
+		}
+
+		return HttpRequestHelper::post(
+			$url,
+			$xRequestId,
+			$username,
+			$password,
+			['Content-Type' => 'application/json']
+		);
+	}
+}