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code-server/packages/protocol/test/helpers.ts

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import * as fs from "fs";
import * as os from "os";
import * as path from "path";
import * as rimraf from "rimraf";
import * as util from "util";
import { IDisposable } from "@coder/disposable";
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import { Emitter } from "@coder/events";
import { Client } from "../src/browser/client";
import { Server, ServerOptions } from "../src/node/server";
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// So we only make the directory once when running multiple tests.
let mkdirPromise: Promise<void> | undefined;
export class Helper {
private i = 0;
public coderDir: string;
private baseDir = path.join(os.tmpdir(), "coder");
public constructor(directoryName: string) {
if (!directoryName.trim()) {
throw new Error("no directory name");
}
this.coderDir = path.join(this.baseDir, directoryName);
}
public tmpFile(): string {
return path.join(this.coderDir, `${this.i++}`);
}
public async createTmpFile(): Promise<string> {
const tf = this.tmpFile();
await util.promisify(fs.writeFile)(tf, "");
return tf;
}
public async prepare(): Promise<void> {
if (!mkdirPromise) {
mkdirPromise = util.promisify(fs.mkdir)(this.baseDir).catch((error) => {
if (error.code !== "EEXIST" && error.code !== "EISDIR") {
throw error;
}
});
}
await mkdirPromise;
await util.promisify(rimraf)(this.coderDir);
await util.promisify(fs.mkdir)(this.coderDir);
}
}
export const createClient = (serverOptions?: ServerOptions): Client => {
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const s2c = new Emitter<Uint8Array | Buffer>();
const c2s = new Emitter<Uint8Array | Buffer>();
const closeCallbacks = <Array<() => void>>[];
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// tslint:disable-next-line no-unused-expression
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new Server({
close: (): void => closeCallbacks.forEach((cb) => cb()),
onDown: (_cb: () => void): void => undefined,
onUp: (_cb: () => void): void => undefined,
onClose: (cb: () => void): number => closeCallbacks.push(cb),
onMessage: (cb): IDisposable => c2s.event((d) => cb(d)),
send: (data): NodeJS.Timer => setTimeout(() => s2c.emit(data), 0),
}, serverOptions);
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const client = new Client({
close: (): void => closeCallbacks.forEach((cb) => cb()),
onDown: (_cb: () => void): void => undefined,
onUp: (_cb: () => void): void => undefined,
onClose: (cb: () => void): number => closeCallbacks.push(cb),
onMessage: (cb): IDisposable => s2c.event((d) => cb(d)),
send: (data): NodeJS.Timer => setTimeout(() => c2s.emit(data), 0),
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});
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return client;
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};