#!/usr/bin/env bash
# Exit 0 only when shop prints the expected reports.
set -euo pipefail
ROOT="$(cd "$(dirname "$0")/.." && pwd)"
fail=0

expect() {
  local want="$1"
  shift
  local got
  got="$("$ROOT/shop" "$@")"
  if [[ "$got" != "$want" ]]; then
    printf 'FAIL: shop %s\n--- want\n%s\n--- got\n%s\n' "$*" "$want" "$got"
    fail=1
  else
    echo "ok: shop $*"
  fi
}

expect $'items: 2\nexpensive: 0\ntotal: 15.00' 500 1000
expect $'items: 4\nexpensive: 2\ntotal: 36.00' 500 1500 2000 0
expect $'items: 5\nexpensive: 0\ntotal: 45.00' 1000 1000 1000 1000 1000

if [[ "$fail" -ne 0 ]]; then
  echo "tests: FAILED"
  exit 1
fi
echo "tests: PASSED"