こういうテストフレームワークほしい

test.js

import assert from "power-assert";
import tapSpec from "tap-spec";

const test = new Test();
const {describe, it} = test;

describe("foo", () => {
  describe(".bar", () => {
    it("fetches bar", async () => {
      const result = await foo.bar();
      assert(result === "bar");
    });
  });
});

const result = test.run();
result.stream
  .pipe(tapSpec())
  .pipe(process.stdout);