Schema verison 1 for Migrate SQLiteOpenHelper and SQLiteDatabase to Room (with Testing)

1.json

{
  "formatVersion": 1,
  "database": {
    "version": 1,
    "identityHash": "99c7946712f93a4d723efbe10a500eb0",
    "entities": [
      {
        "tableName": "users",
        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`userid` INTEGER NOT NULL, `username` TEXT, PRIMARY KEY(`userid`))",
        "fields": [
          {
            "fieldPath": "userid",
            "columnName": "userid",
            "affinity": "INTEGER",
            "notNull": true
          },
          {
            "fieldPath": "username",
            "columnName": "username",
            "affinity": "TEXT",
            "notNull": false
          }
        ],
        "primaryKey": {
          "columnNames": [
            "userid"
          ],
          "autoGenerate": false
        },
        "indices": [],
        "foreignKeys": []
      }
    ],
    "setupQueries": [
    ]
  }
}