const test = n => {
  if (n === 1) {
    console.log(n)
  } else if (n === 2) {
    console.log(2)
  } /* istanbul ignore next */ else if (1 === 2) {
    console.log('math is broken')
  } else {
    console.log('n is some other thing')
  }
}

test(1)
test(2)
test(3)
// gets 100% coverage, but STILL gets 100% coverage if test(3) removed