Hello oclif test

hello.test.ts

import { expect, test } from "@oclif/test";

describe("hello", () => {
  test
    .stdout()
    .command(["hello", "world", "--from=clidevs"])
    .it("runs hello cmd", (ctx) => {
      expect(ctx.stdout).to.contain("hello world from clidevs!");
    });
});