medusa-store/docs-util/helpers/use-db.js

const { dropDatabase, createDatabase } = require("pg-god")
const { createConnection } = require("typeorm")

const path = require("path")

const DbTestUtil = {
  db_: null,

  setDb: function (connection) {
    this.db_ = connection
  },

  clear: function () {
    return this.db_.synchronize(true)
  },

  shutdown: async function () {
    await this.db_.close()
    return dropDatabase({ databaseName })
  },
}

const instance = DbTestUtil

module.exports = {
  initDb: async function ({ cwd }) {
    const migrationDir = path.resolve(
      path.join(
        cwd,
        `node_modules`,
        `@medusajs`,
        `medusa`,
        `dist`,
        `migrations`
      )
    )

    const databaseName = "medusa-fixtures"
    await createDatabase({ databaseName })

    const connection = await createConnection({
      type: "postgres",
      url: "postgres://localhost/medusa-fixtures",
      migrations: [`${migrationDir}/*.js`],
    })

    await connection.runMigrations()
    await connection.close()

    const modelsLoader = require(path.join(
      cwd,
      `node_modules`,
      `@medusajs`,
      `medusa`,
      `dist`,
      `loaders`,
      `models`
    )).default

    const entities = modelsLoader({}, { register: false })
    const dbConnection = await createConnection({
      type: "postgres",
      url: "postgres://localhost/medusa-fixtures",
      entities,
    })

    instance.setDb(dbConnection)
    return dbConnection
  },
  useDb: function () {
    return instance
  },
}