A test harness for code pad like environments.

codepad-test-harness.js

let tests = [
  [Math.max(1, 3), 3, 'can pass'],
  [Math.max(1, 4), 3, 'can fail'],
];
tests.forEach((test) =>
  console.log(
    test[0].toString() === test[1].toString() ? 'pass!' : 'fail!',
    'expected:',
    test[1],
    'result:',
    test[0],
    'message:',
    test[2],
  ),
);
console.log(tests.every((t) => t[0].toString() === t[1].toString()) ? 'SUITE PASSES' : 'SUITE FAILS');