#!/bin/sh
set -eu

script_dir=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
test_dir=$(mktemp -d)
trap 'rm -rf "$test_dir"' EXIT
mkdir -p "$test_dir/bin"

printf '%s\n' '#!/bin/sh' 'exit 0' > "$test_dir/bin/docker"
chmod +x "$test_dir/bin/docker"

printf '%s\n' 'fake dump' > "$test_dir/backup.dump"
PATH="$test_dir/bin:$PATH" \
  BACKUP_FILE="$test_dir/backup.dump" \
  POSTGRES_DB=inventory \
  POSTGRES_USER=inventory \
  POSTGRES_PASSWORD=secret \
  sh "$script_dir/restore-postgres.sh" >/dev/null

if BACKUP_FILE="$test_dir/empty.dump" \
  POSTGRES_DB=inventory \
  POSTGRES_USER=inventory \
  POSTGRES_PASSWORD=secret \
  sh "$script_dir/restore-postgres.sh" >/dev/null 2>&1; then
  printf '%s\n' 'Expected empty backup to fail.' >&2
  exit 1
fi

if BACKUP_FILE="$test_dir/missing.dump" \
  POSTGRES_DB=inventory \
  POSTGRES_USER=inventory \
  POSTGRES_PASSWORD=secret \
  sh "$script_dir/restore-postgres.sh" >/dev/null 2>&1; then
  printf '%s\n' 'Expected missing backup to fail.' >&2
  exit 1
fi

printf '%s\n' 'restore-postgres tests passed.'