// META: script=/resources/test-only-api.js // META: script=/serial/resources/common.js // META: script=resources/automation.js serial_test(async (t, fake) => { const {port, fakePort} = await getFakeSerialPort(fake); // Select a buffer size smaller than the amount of data transferred. await port.open({baudRate: 9600, bufferSize: 64}); const reader = port.readable.getReader(); await fakePort.writable(); const data = new Uint8Array(1024); // Much larger than bufferSize above. for (let i = 0; i < data.byteLength; ++i) data[i] = i & 0xff; fakePort.write(data); const value = await readWithLength(reader, data.byteLength); compareArrays(data, value); reader.releaseLock(); await port.close(); }, 'Can read a large amount of data');