### Question:
ReconUtils { public File getReconDbDir(ConfigurationSource conf, String dirConfigKey) { File metadataDir = getDirectoryFromConfig(conf, dirConfigKey, "Recon"); if (metadataDir != null) { return metadataDir; } LOG.warn("{} is not configured. We recommend adding this setting. " + "Falling back to {} instead.", dirConfigKey, HddsConfigKeys.OZONE_METADATA_DIRS); return getOzoneMetaDirPath(conf); } ReconUtils(); static File getReconScmDbDir(ConfigurationSource conf); File getReconDbDir(ConfigurationSource conf, String dirConfigKey); static File createTarFile(Path sourcePath); void untarCheckpointFile(File tarFile, Path destPath); HttpURLConnection makeHttpCall(URLConnectionFactory connectionFactory,
                                  String url, boolean isSpnego); File getLastKnownDB(File reconDbDir, String fileNamePrefix); static void upsertGlobalStatsTable(Configuration sqlConfiguration,
                                            GlobalStatsDao globalStatsDao,
                                            String key,
                                            Long count);  }### Answer:
@Test public void testGetReconDbDir() throws Exception { String filePath = folder.getRoot().getAbsolutePath(); OzoneConfiguration configuration = new OzoneConfiguration(); configuration.set("TEST_DB_DIR", filePath); File file = new ReconUtils().getReconDbDir(configuration, "TEST_DB_DIR"); Assert.assertEquals(filePath, file.getAbsolutePath()); }