Add tests for GPUDevice.adapterInfo

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 +39,42 @@ g.test('adapter_info')
       `adapterInfo.device should be a normalized identifier. But it's '${adapterInfo.device}'`
     );
   });
+
+g.test('same_object')
+  .desc(
+    `
+GPUAdapter.info provides the same object each time it's accessed`
+  )
+  .fn(async t => {
+    const gpu = getGPU(t.rec);
+    const adapter = await gpu.requestAdapter();
+    assert(adapter !== null);
+
+    const adapterInfo1 = adapter.info;
+    const adapterInfo2 = adapter.info;
+    t.expect(adapterInfo1 === adapterInfo2);
+  });
+
+g.test('device_matches_adapter')
+  .desc(
+    `
+Test that GPUDevice.adapterInfo matches GPUAdapter.info`
+  )
+  .fn(async t => {
+    const gpu = getGPU(t.rec);
+    const adapter = await gpu.requestAdapter();
+    assert(adapter !== null);
+
+    const device = await t.requestDeviceTracked(adapter);
+    assert(device !== null);
+
+    assert(device.adapterInfo instanceof GPUAdapterInfo);
+    assert(adapter.info instanceof GPUAdapterInfo);
+
+    for (const k of Object.keys(GPUAdapterInfo.prototype)) {
+      t.expect(
+        objectEquals(device.adapterInfo[k], adapter.info[k]),
+        `device.adapterInfo.${k} is "${device.adapterInfo[k]}". Expected "${adapter.info[k]}"`
+      );
+    }
+  });