Address feedback

src/webgpu/api/operation/adapter/info.spec.ts

@@ -1,11 +1,11 @@
 export const description = `
-Tests GPUAdapter.info members formatting.
+Tests for GPUAdapterInfo.
 `;
 
 import { Fixture } from '../../../../common/framework/fixture.js';
 import { makeTestGroup } from '../../../../common/framework/test_group.js';
 import { getGPU } from '../../../../common/util/navigator_gpu.js';
-import { assert } from '../../../../common/util/util.js';
+import { assert, objectEquals } from '../../../../common/util/util.js';
 
 export const g = makeTestGroup(Fixture);
 
@@ -39,3 +39,27 @@ g.test('adapter_info')
       `adapterInfo.device should be a normalized identifier. But it's '${adapterInfo.device}'`
     );
   });
+
+g.test('device_matches_adapter')
+.desc(
+  `
+Test that GPUDevice.adapterInfo matches GPUAdapter.info`
+)
+.fn(async t => {
+  const gpu = getGPU(t.rec);
+  const adapter = await gpu.requestAdapter();
+  assert(adapter !== null);
+
+  const device = await t.requestDeviceTracked(adapter);
+  assert(device !== null);
+
+  assert(device.adapterInfo instanceof GPUAdapterInfo);
+  assert(adapter.info instanceof GPUAdapterInfo);
+
+  for (const k of Object.keys(GPUAdapterInfo.prototype)) {
+    t.expect(
+      objectEquals(device.adapterInfo[k], adapter.info[k]),
+      `device.adapterInfo.${k} is "${device.adapterInfo[k]}". Expected "${adapter.info[k]}"`
+    );
+  }
+});