test(playwright): convert and create new dataset list playwright tests (#36196)

Co-authored-by: Claude <noreply@anthropic.com>

superset-frontend/playwright/utils/constants.ts

@@ -0,0 +1,46 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/**
+ * Timeout constants for Playwright tests.
+ * Only define timeouts that differ from Playwright defaults or are semantically important.
+ *
+ * Default Playwright timeouts (from playwright.config.ts):
+ * - Test timeout: 30000ms (30s)
+ * - Expect timeout: 8000ms (8s)
+ *
+ * Use these constants instead of magic numbers for better maintainability.
+ */
+
+export const TIMEOUT = {
+  /**
+   * Global setup timeout (matches test timeout for cold CI starts)
+   */
+  GLOBAL_SETUP: 30000, // 30s for global setup auth
+
+  /**
+   * Page navigation and load timeouts
+   */
+  PAGE_LOAD: 10000, // 10s for page transitions (login → welcome, dataset → explore)
+
+  /**
+   * Form and UI element load timeouts
+   */
+  FORM_LOAD: 5000, // 5s for forms to become visible (login form, modals)
+} as const;

superset-frontend/playwright/utils/urls.ts

@@ -17,7 +17,18 @@
  * under the License.
  */
 
+/**
+ * URL constants for Playwright navigation
+ *
+ * These are relative paths (no leading '/') that rely on baseURL ending with '/'.
+ * playwright.config.ts normalizes baseURL to always end with '/' to ensure
+ * correct URL resolution with APP_PREFIX (e.g., /app/prefix/).
+ *
+ * Example: baseURL='http://localhost:8088/app/prefix/' + 'tablemodelview/list'
+ *        = 'http://localhost:8088/app/prefix/tablemodelview/list'
+ */
 export const URL = {
+  DATASET_LIST: 'tablemodelview/list',
   LOGIN: 'login/',
   WELCOME: 'superset/welcome/',
 } as const;