_testPassCount=0
_testTotalCount=0

# $1: Message
# $2: Subshell output
function it() {
  local exitCode=$?
  local message="$1"
  local output="$2"
  local status

  _testTotalCount=$((_testTotalCount+1))

  if [ "$exitCode" -eq 0 ]; then
    status='✓'
    _testPassCount=$((_testPassCount+1))
  else
    status='✗'
  fi

  if [ -n "$output" ]; then
    printf '%s\n' "$output"
  fi
  printf '%s %s\n' "$status" "$message"
}

function testSummary() {
  printf 'Passed: %s of %s tests\n' "$_testPassCount" "$_testTotalCount"
}