test(sqllab): migrate Cypress E2E tests to Playwright (#39071)

superset-frontend/playwright/components/core/EditableTabs.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.
+ */
+
+import { Tabs } from './Tabs';
+
+/**
+ * EditableTabs component for Ant Design editable-card tabs.
+ *
+ * Mirrors the Superset EditableTabs component (type="editable-card")
+ * which adds add/remove tab functionality to the base Tabs component.
+ *
+ * The add button (.ant-tabs-nav-add) is only rendered when
+ * type="editable-card". If the host component switches to type="card"
+ * (e.g., SQL Lab empty state), use the host page object for that case.
+ */
+export class EditableTabs extends Tabs {
+  /**
+   * Clicks the add-tab button rendered by antd in editable-card mode.
+   */
+  async addTab(): Promise<void> {
+    await this.element.getByRole('button', { name: 'Add tab' }).click();
+  }
+
+  /**
+   * Clicks the remove button on the last tab.
+   */
+  async removeLastTab(): Promise<void> {
+    await this.nav.locator('.ant-tabs-tab-remove').last().click();
+  }
+}