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/api/assertions.ts

@@ -0,0 +1,61 @@
+/**
+ * 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 { Response, APIResponse } from '@playwright/test';
+import { expect } from '@playwright/test';
+
+/**
+ * Common interface for response types with status() method.
+ * Supports both Response (network interception) and APIResponse (page.request API).
+ */
+type ResponseLike = Response | APIResponse;
+
+/**
+ * Verify response has exact status code
+ * @param response - Playwright Response or APIResponse object
+ * @param expected - Expected status code
+ * @returns The response for chaining
+ */
+export function expectStatus<T extends ResponseLike>(
+  response: T,
+  expected: number,
+): T {
+  expect(
+    response.status(),
+    `Expected status ${expected}, got ${response.status()}`,
+  ).toBe(expected);
+  return response;
+}
+
+/**
+ * Verify response status code is one of the expected values
+ * @param response - Playwright Response or APIResponse object
+ * @param expected - Array of acceptable status codes
+ * @returns The response for chaining
+ */
+export function expectStatusOneOf<T extends ResponseLike>(
+  response: T,
+  expected: number[],
+): T {
+  expect(
+    expected,
+    `Expected status to be one of ${expected.join(', ')}, got ${response.status()}`,
+  ).toContain(response.status());
+  return response;
+}