LayoutTests/webgpu/buffers.html - WebKit - Git at Google

 <!DOCTYPE html><!-- webkit-test-runner [ experimental:WebGPUEnabled=true ] -->
 <meta charset=utf-8>
 <title>Get the WebGPUDevice, create a WebGPUBuffer, and write vertex data to it.</title>
 <body>
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
 <script src="../resources/js-test-pre.js"></script>
 <script src="js/basic-webgpu-functions.js"></script>
 <script>
 function createBuffer() {
     const buffer = defaultDevice.createBuffer({ size: 16, usage: WebGPUBufferUsage.MAP_WRITE });
     assert_true(buffer instanceof WebGPUBuffer, "createBuffer returned a WebGPUBuffer");

     let arrayBuffer = buffer.mapping;
     let floatArray = new Float32Array(arrayBuffer);
     assert_equals(floatArray.length, 4);

     floatArray[0] = -1;
     floatArray[1] = 1;
     floatArray[2] = 0;
     floatArray[3] = 1;
 }

 promise_test(async t => {
     const canvas = document.createElement("canvas");
     await setUpContexts(canvas);
     createBuffer();
 }, "createBuffer() on WebGPUDevice.");

 </script>
 </body>
	<!DOCTYPE html><!-- webkit-test-runner [ experimental:WebGPUEnabled=true ] -->
	<meta charset=utf-8>
	<title>Get the WebGPUDevice, create a WebGPUBuffer, and write vertex data to it.</title>
	<body>
	<script src="../resources/testharness.js"></script>
	<script src="../resources/testharnessreport.js"></script>
	<script src="../resources/js-test-pre.js"></script>
	<script src="js/basic-webgpu-functions.js"></script>
	<script>
	function createBuffer() {
	const buffer = defaultDevice.createBuffer({ size: 16, usage: WebGPUBufferUsage.MAP_WRITE });
	assert_true(buffer instanceof WebGPUBuffer, "createBuffer returned a WebGPUBuffer");

	let arrayBuffer = buffer.mapping;
	let floatArray = new Float32Array(arrayBuffer);
	assert_equals(floatArray.length, 4);

	floatArray[0] = -1;
	floatArray[1] = 1;
	floatArray[2] = 0;
	floatArray[3] = 1;
	}

	promise_test(async t => {
	const canvas = document.createElement("canvas");
	await setUpContexts(canvas);
	createBuffer();
	}, "createBuffer() on WebGPUDevice.");

	</script>
	</body>