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/tests/experimental/dataset/dataset-test-helpers.ts

@@ -0,0 +1,67 @@
+/**
+ * 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 type { Page, TestInfo } from '@playwright/test';
+import type { TestAssets } from '../../../helpers/fixtures/testAssets';
+import { createTestVirtualDataset } from '../../../helpers/api/dataset';
+
+interface TestDatasetResult {
+  id: number;
+  name: string;
+}
+
+interface CreateTestDatasetOptions {
+  /** Prefix for generated name (default: 'test') */
+  prefix?: string;
+}
+
+/**
+ * Creates a test virtual dataset.
+ * Uses createTestVirtualDataset() to create a simple virtual dataset for testing.
+ *
+ * Note: The dataset duplicate API only works with virtual datasets. This helper
+ * creates virtual datasets directly to avoid that limitation.
+ *
+ * @example
+ * // Basic usage
+ * const { id, name } = await createTestDataset(page, testAssets, test.info());
+ *
+ * @example
+ * // Custom prefix
+ * const { id, name } = await createTestDataset(page, testAssets, test.info(), {
+ *   prefix: 'test_delete',
+ * });
+ */
+export async function createTestDataset(
+  page: Page,
+  testAssets: TestAssets,
+  testInfo: TestInfo,
+  options?: CreateTestDatasetOptions,
+): Promise<TestDatasetResult> {
+  const prefix = options?.prefix ?? 'test';
+  const name = `${prefix}_${Date.now()}_${testInfo.parallelIndex}`;
+
+  const id = await createTestVirtualDataset(page, name);
+  if (!id) {
+    throw new Error(`Failed to create test dataset: ${name}`);
+  }
+  testAssets.trackDataset(id);
+
+  return { id, name };
+}