bats/libexec/bats-exec

#!/usr/bin/env bash
set -e

BATS_TEST_FILENAME="$1"
if [ -z "$BATS_TEST_FILENAME" ]; then
  echo "usage: bats-exec <filename>" >&2
  exit 1
elif [ ! -f "$BATS_TEST_FILENAME" ]; then
  echo "bats: $BATS_TEST_FILENAME does not exist"
  exit 1
else
  shift
fi

BATS_TEST_DIRNAME="$(dirname "$BATS_TEST_FILENAME")"
BATS_TEST_NAMES=()

load() {
  source "$BATS_TEST_DIRNAME/$1.bash"
}

run() {
  local e
  [[ ! "$-" =~ e ]] || e=1
  set +e
  output="$("$@" 2>&1)"
  IFS=$'\n' lines=($output)
  status="$?"
  [ -z "$e" ] || set -e
}

abort() {
  [ "$#" -eq 0 ] || echo error: "$@" >&2
  exit 1
}

setup() {
  true
}

teardown() {
  true
}

bats_test_info() {
  BATS_TEST_DESCRIPTION="$1"
  BATS_LINE_NUMBER="$2"
}

bats_test_function() {
  local test_name="$1"
  BATS_TEST_NAMES["${#BATS_TEST_NAMES[@]}"]="$test_name"
}

bats_exit_trap() {
  trap - err exit
  if [ -z "$BATS_TEST_COMPLETED" ]; then
    echo "not ok $BATS_TEST_NUMBER $BATS_TEST_DESCRIPTION"
    exit 1
  else
    echo "ok $BATS_TEST_NUMBER $BATS_TEST_DESCRIPTION"
    exit 0
  fi
}

bats_perform_tests() {
  echo "1..$#"
  test_number=1
  for test_name in "$@"; do
    "$0" "$BATS_TEST_FILENAME" "$test_name" "$test_number" || true
    test_number=$(($test_number + 1))
  done
}

bats_perform_test() {
  BATS_TEST_NAME="$1"
  if [ "$(type -t "$BATS_TEST_NAME" || true)" = "function" ]; then
    BATS_TEST_NUMBER="$2"
    if [ -z "$BATS_TEST_NUMBER" ]; then
      echo "1..1"
      BATS_TEST_NUMBER="1"
    fi

    BATS_TEST_COMPLETED=""
    trap bats_exit_trap err exit
    setup
    "$BATS_TEST_NAME"
    BATS_TEST_COMPLETED=1

  else
    echo "bats: unknown test name \`$BATS_TEST_NAME'" >&2
    exit 1
  fi
}

eval "$(bats-preprocess < "$BATS_TEST_FILENAME")"

if [ "$#" -eq 0 ]; then
  bats_perform_tests "${BATS_TEST_NAMES[@]}"
else
  bats_perform_test "$@"
fi