Test that createBuffer/createTexture only allows exposed usages

src/webgpu/api/validation/buffer/create.spec.ts

@@ -61,6 +61,7 @@ g.test('usage')
     u
       .combine('usage1', [0, ...kBufferUsages, kSomeBogusBufferUsage])
       .combine('usage2', [0, ...kBufferUsages, kSomeBogusBufferUsage])
+      .filter(p => p.usage1 <= p.usage2)
       .beginSubcases()
       .combine('mappedAtCreation', [false, true])
   )
@@ -83,6 +84,32 @@ g.test('usage')
     );
   });
 
+g.test('new_usages')
+  .desc(`Valid usages not present in GPUBufferUsage shouldn't be accepted by createBuffer().`)
+  .params(u =>
+    u //
+      .beginSubcases()
+      .combine('usage', kBufferUsages)
+  )
+  .fn(t => {
+    const { usage } = t.params;
+
+    let exposedUsages = 0;
+    for (const v of Object.values(GPUBufferUsage)) {
+      exposedUsages |= v;
+    }
+
+    const success = (usage & exposedUsages) === usage;
+
+    t.expectGPUError(
+      'validation',
+      () => {
+        t.createBufferTracked({ size: 16, usage });
+      },
+      !success
+    );
+  });
+
 const BufferUsage = GPUConst.BufferUsage;
 
 g.test('createBuffer_invalid_and_oom')

src/webgpu/api/validation/createTexture.spec.ts

@@ -1132,6 +1132,35 @@ g.test('usage')
     );
   });
 
+g.test('new_usages')
+  .desc(`Valid usages not present in GPUTextureUsage shouldn't be accepted by createTexture().`)
+  .params(u =>
+    u
+      .combine('usage', [
+        ...kTextureUsages,
+        GPUConst.TextureUsage.RENDER_ATTACHMENT | GPUConst.TextureUsage.TRANSIENT_ATTACHMENT,
+      ])
+      .filter(p => isValidTextureUsageCombination(p.usage))
+  )
+  .fn(t => {
+    const { usage } = t.params;
+
+    let exposedUsages = 0;
+    for (const v of Object.values(GPUTextureUsage)) {
+      exposedUsages |= v;
+    }
+
+    const success = (usage & exposedUsages) === usage;
+
+    t.expectGPUError(
+      'validation',
+      () => {
+        t.createTextureTracked({ format: 'rgba8unorm', size: [1, 1], usage });
+      },
+      !success
+    );
+  });
+
 g.test('viewFormats')
   .desc(
     `Test creating a texture with viewFormats list for all {texture format}x{view format}. Only compatible view formats should be valid.`