blackcheck.sh

#!/bin/bash
set -eu
EXIT_CODE=0

# `check $FILE_PATH $MESSAGE`: $FILE_PATH が存在してたら表示して EXIT_CODE を 1 に設定
function check () {
  if [ -s $1 ]; then
    echo $2
    cat $1
    EXIT_CODE=1
  fi
}

rm -rf data/black.txt
black --check notes_generator 2>&1 1>/dev/null | grep "would reformat" > data/black.txt || true
black --check scripts 2>&1 1>/dev/null | grep "would reformat" >> data/black.txt || true
black --check tests 2>&1 1>/dev/null | grep "would reformat" >> data/black.txt || true
check data/black.txt '[check black]'

test $EXIT_CODE -eq 0