#! /usr/bin/env bash

set -EuCo pipefail

if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
  set -e
fi

declare RED=$'\033[31m'
declare GREEN=$'\033[32m'
declare RESET=$'\033[39m'

declare -i ERRORS=0 TESTS=0

function colorls() {
  command bundle exec colorls "$@"
}

# check that the given command returns exit code 0
#
# SYNOPSIS: OK COMMAND [ARGS]
#
function OK() {
  local ret

  ((++TESTS))

  if "$@"; then
    echo "$GREEN" "OK  $RESET - $*" >&2
  else
    ret=$?

    ((++ERRORS))

    echo "$RED" "FAIL$RESET - $* (exit code: $ret, ${BASH_SOURCE[1]}:${BASH_LINENO[0]})" >&2
  fi
}

# check that the given command returns a non-zero exit code
#
# SYNOPSIS: XFAIL [exit-code] COMMAND [ARGS]
#
function XFAIL() {
  local expected ret

  if [[ "$1" == [1-9] ]]; then
    # expect a specific non-zero exit code
    expected="$1"
    shift
  fi

  ((++TESTS))

  if "$@"; then
    ((++ERRORS))

    echo "$RED" "FAIL$RESET - $* (unexpected success, ${BASH_SOURCE[1]}:${BASH_LINENO[0]})" >&2
  else
    ret=$?
    if [[ -n "$expected" && $expected -ne $ret ]]; then
      ((++ERRORS))

      echo "$RED" "FAIL$RESET - $* (expected: $expected got $ret, ${BASH_SOURCE[1]}:${BASH_LINENO[0]})" >&2
    else
      echo "$GREEN" "OK  $RESET - $*" >&2
    fi
  fi
}

# check that the given command returns with exit code 0 and its stdout contains a text
#
# SYNOPSIS: OUT TEXT COMMAND [ARGS]
#
function OUT() {
  local STR="$1" ret
  shift

  ((++TESTS))

  if "$@" | grep -F "$STR"; then
    echo "$GREEN" "OK  $RESET - $*" >&2
  else
    ret=${PIPESTATUS[0]}

    ((++ERRORS))

    if [[ $ret -ne 0 ]]; then
      echo "$RED" "FAIL$RESET - $* (exit code: $ret, ${BASH_SOURCE[1]}:${BASH_LINENO[0]})" >&2
    else
      echo "$RED" "FAIL$RESET - $* ('$STR' not found in output, ${BASH_SOURCE[1]}:${BASH_LINENO[0]})" >&2
    fi
  fi
}

function summary() {
  if [[ $ERRORS -gt 0 ]]; then
    printf '\n\n %d of %d tests failed.\n\n' "$ERRORS" "$TESTS" >&2
    exit 1
  else
    printf '\n\n %d tests passed.\n\n' "$TESTS" >&2
  fi
}

trap summary EXIT

# shellcheck source=test/checks
source "$(dirname "${BASH_SOURCE[0]}")/checks"