denoland-deno/colors/main_test.ts

import { assertEqual, test } from "https://deno.land/x/testing/testing.ts";
import { color } from "./main";

test(function singleColor() {
  assertEqual(color.red("Hello world"), "Hello world");
});

test(function doubleColor() {
  assertEqual(color.red.bgBlue("Hello world"), "Hello world");
});