web/bin/test-migration

#!/usr/bin/env bash
# https://docs.ourbigbook.com/test-migration
set -eu

reset() (
  if [ "$db" = sqlite3 ]; then
    rm -f "${script_dir}/db.sqlite3"
  else
    "${script_dir}/pg-setup"
  fi
)

schema() (
  out="$d/$1.$db.${schema_ext}"
  if [ "$db" = sqlite3 ]; then
    sqlite3 db.sqlite3 .schema > "$out"
  else
    #"${script_dir}/pg_dump" -s
    PGPASSWORD=a pg_dump -U ourbigbook_user -h localhost ourbigbook -s > "$out"
  fi
)

args=()
while [ $# -gt 0 ]; do
  case "$1" in
    --)
      shift
      break
      ;;
    *)
      args+=("$1")
      shift
      ;;
  esac
done

if [ "${OURBIGBOOK_POSTGRES:-0}" = 1 ]; then
  db=postgres
else
  db=sqlite3
fi
schema_ext=sql

script_dir="$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
d="${script_dir}/tmp/test-migration"
rm -rf "$d"
mkdir -p "$d"

git add migrations
git commit --amend --no-edit

# Cean from scratch sanity check.
reset
"${script_dir}/generate-demo-data.js" --clear "${args[@]}"
schema new-clean

# Go back to old DB.
git checkout "${1:-HEAD~}"
reset
"${script_dir}/generate-demo-data.js" --clear "${args[@]}"
schema old

# Migrate.
git checkout -
if [ "$db" = postgres ]; then
  export NODE_ENV=production
fi
"${script_dir}/psql" -c 'SELECT * FROM "SequelizeMeta";'
"${script_dir}/sync-db.js"
schema new-migration

# Compare the above.
if [ "$db" = sqlite3 ]; then
  sort "$d/old.$db.${schema_ext}"           > "$d/old.$db.sort.${schema_ext}"
  sort "$d/new-clean.$db.${schema_ext}"     > "$d/new-clean.$db.sort.${schema_ext}"
  sort "$d/new-migration.$db.${schema_ext}" > "$d/new-migration.$db.sort.${schema_ext}"
  diff -u "$d/old.$db.sort.${schema_ext}" "$d/new-clean.$db.sort.${schema_ext}" || true
  diff="$(diff -u "$d/new-clean.$db.sort.${schema_ext}" "$d/new-migration.$db.sort.${schema_ext}" || true)"
  echo
  echo "$diff"
  if [ ! -z "$diff" ]; then
    echo 'error: Clean DB and migrated are different'
    exit 1
  fi
else
  # PostgreSQL statements are not one per line so it is harder to automatically compare things correctly,
  # eye inspection for now.
  diff -u "$d/old.$db.${schema_ext}" "$d/new-clean.$db.${schema_ext}" || true
  diff -u "$d/new-clean.$db.${schema_ext}" "$d/new-migration.$db.${schema_ext}" || true
fi