std/examples/tests/colors_test.ts


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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { assertStrictEq } from "../../testing/asserts.ts";

Deno.test("[examples/colors] print a colored text", async () => {
  const decoder = new TextDecoder();
  const process = Deno.run({
    args: [Deno.execPath(), "colors.ts"],
    cwd: "examples",
    stdout: "piped"
  });
  try {
    const output = await Deno.readAll(process.stdout!);
    const actual = decoder.decode(output).trim();
    const expected = "[44m[3m[31m[1mHello world![22m[39m[23m[49m";
    assertStrictEq(actual, expected);
  } finally {
    process.close();
  }
});