@Override protected void onBeforeProcess(IRuntimeConfig runtimeConfig) throws IOException { super.onBeforeProcess(runtimeConfig); MongodConfig config = getConfig(); File tmpDbDir; if (config.getDatabaseDir() != null) { tmpDbDir = Files.createOrCheckDir(config.getDatabaseDir()); } else { tmpDbDir = Files.createTempDir("embedmongo-db"); dbDirIsTemp = true; } this.dbDir = tmpDbDir; }