function wisePerson(wiseType, whatToSay) {
  return `A wise ${wiseType} once said: "${whatToSay}".`
}

// tests
function testWisePerson() {
  const wiseType = 'goat';
  const whatToSay = 'hello world';
  const expected = 'A wise ' + wiseType + ' once said: "' +
      whatToSay + '".';
  const actual = wisePerson(wiseType, whatToSay);
  if (expected === actual) {
    console.log('SUCCESS: `wisePerson` is working');
  }
  else {
    console.log('FAILURE: `wisePerson` is not working');
  }
}

testWisePerson();

function shouter(whatToShout) {
  return `${whatToShout.toUpperCase()}!!!`
}

// tests
function testShouter() {
  const whatToShout = 'fee figh foe fum';
  const expected = 'FEE FIGH FOE FUM!!!';
  if (shouter(whatToShout) === expected) {
    console.log('SUCCESS: `shouter` is working');
  }
  else {
    console.log('FAILURE: `shouter` is not working');
  }
}

testShouter();

function textNormalizer(text) {
  return `${text.toLowerCase().trim()}`
}

// tests
function testTextNormalizer() {
  const text = "   let's GO SURFING NOW everyone is learning how   ";
  const expected = "let's go surfing now everyone is learning how";
  if (textNormalizer(text) === expected) {
    console.log('SUCCESS: `textNormalizer` is working');
  }
  else {
    console.log('FAILURE: `textNormalizer` is not working');
  }
}

testTextNormalizer();