stdio.test.js•1.05 kB
import { ReadBuffer } from "./stdio.js";
const testMessage = {
jsonrpc: "2.0",
method: "foobar",
};
test("should have no messages after initialization", () => {
const readBuffer = new ReadBuffer();
expect(readBuffer.readMessage()).toBeNull();
});
test("should only yield a message after a newline", () => {
const readBuffer = new ReadBuffer();
readBuffer.append(Buffer.from(JSON.stringify(testMessage)));
expect(readBuffer.readMessage()).toBeNull();
readBuffer.append(Buffer.from("\n"));
expect(readBuffer.readMessage()).toEqual(testMessage);
expect(readBuffer.readMessage()).toBeNull();
});
test("should be reusable after clearing", () => {
const readBuffer = new ReadBuffer();
readBuffer.append(Buffer.from("foobar"));
readBuffer.clear();
expect(readBuffer.readMessage()).toBeNull();
readBuffer.append(Buffer.from(JSON.stringify(testMessage)));
readBuffer.append(Buffer.from("\n"));
expect(readBuffer.readMessage()).toEqual(testMessage);
});
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