/* eslint-disable required-modules */
'use strict';

const assert = require('assert');

// https://github.com/w3c/testharness.js/blob/master/testharness.js
module.exports = {
  test: (fn, desc) => {
    try {
      fn();
    } catch (err) {
      console.error(`In ${desc}:`);
      throw err;
    }
  },
  assert_equals: assert.strictEqual,
  assert_true: (value, message) => assert.strictEqual(value, true, message),
  assert_false: (value, message) => assert.strictEqual(value, false, message),
  assert_throws: (code, func, desc) => {
    assert.throws(func, function(err) {
      return typeof err === 'object' &&
             'name' in err &&
             err.name.startsWith(code.name);
    }, desc);
  },
  assert_array_equals: assert.deepStrictEqual,
  assert_unreached(desc) {
    assert.fail(`Reached unreachable code: ${desc}`);
  }
};