#!/bin/dash

# Test startup, create a temporary directory and cd into it with files.
tmp_dir=$(mktemp --directory --quiet --tmpdir=./)
if [ "$(find tigger-* | wc -l)" -le 0 ]; then
  printf "error: no tigger commands found, cannot run tests\n" >&2
  exit 1
fi
cp tigger-* "$tmp_dir"/
cd "$tmp_dir" || exit

# Functions to test if the return value was 0 or non-zero.
assert_good_exec () {
  printf "%s: " "$1"
  if $1; then
    return
  fi
  printf "test failed, previous command expected zero output code\n" >&2
  rm -rf ../"$tmp_dir"
  exit 1
}
# Functions to test if the return value was 0 or non-zero.
assert_bad_exec () {
  printf "%s: " "$1"
  if ! $1; then
    return
  fi
  printf "test failed, previous command expected non-zero output code\n" >&2
  rm -rf ../"$tmp_dir"
  exit 1
}
printf "starting tests: output and order will be printed\n\n"
# End of test startup

# The purpose of this test is to ensure that tigger-rm'ing a file can still be
# retrieved later (provided it was in a different commit).
assert_good_exec "./tigger-init"
printf "contents" > a
assert_good_exec "./tigger-add a"
assert_good_exec "./tigger-commit -m commitmessage"
assert_good_exec "./tigger-rm a"
assert_good_exec "./tigger-commit -m commitmessage"

# Ensure it was deleted.
if [ -e a ]; then
  printf "error: file was not deleted after git rm\n" >&2
  exit 1
fi

# Ensure it can be later retrieved.
assert_good_exec "./tigger-show 0:a"
if [ "$(./tigger-show 0:a)" = "" ]; then
  printf "error: file was not retrievable after git rm\n" >&2
  exit 1
fi


# Test teardown/cleanup
printf "\ntest completed successfully\n"
rm -rf ../"$tmp_dir"
exit 0