test(playwright): additional dataset list playwright tests (#36684)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

superset-frontend/playwright/helpers/fixtures/testAssets.ts

@@ -0,0 +1,68 @@
+/**
+ * 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 { test as base } from '@playwright/test';
+import { apiDeleteDataset } from '../api/dataset';
+import { apiDeleteDatabase } from '../api/database';
+
+/**
+ * Test asset tracker for automatic cleanup after each test.
+ * Inspired by Cypress's cleanDashboards/cleanCharts pattern.
+ */
+export interface TestAssets {
+  trackDataset(id: number): void;
+  trackDatabase(id: number): void;
+}
+
+export const test = base.extend<{ testAssets: TestAssets }>({
+  testAssets: async ({ page }, use) => {
+    // Use Set to de-dupe IDs (same resource may be tracked multiple times)
+    const datasetIds = new Set<number>();
+    const databaseIds = new Set<number>();
+
+    await use({
+      trackDataset: id => datasetIds.add(id),
+      trackDatabase: id => databaseIds.add(id),
+    });
+
+    // Cleanup: Delete datasets FIRST (they reference databases)
+    // Then delete databases. Use failOnStatusCode: false for tolerance.
+    await Promise.all(
+      [...datasetIds].map(id =>
+        apiDeleteDataset(page, id, { failOnStatusCode: false }).catch(error => {
+          console.warn(`[testAssets] Failed to cleanup dataset ${id}:`, error);
+        }),
+      ),
+    );
+    await Promise.all(
+      [...databaseIds].map(id =>
+        apiDeleteDatabase(page, id, { failOnStatusCode: false }).catch(
+          error => {
+            console.warn(
+              `[testAssets] Failed to cleanup database ${id}:`,
+              error,
+            );
+          },
+        ),
+      ),
+    );
+  },
+});
+
+export { expect } from '@playwright/test';