### Question:
DataxUtils { public static String getReaderPluginName(DbType dbType) { switch (dbType) { case MYSQL: return DATAX_READER_PLUGIN_MYSQL; case POSTGRESQL: return DATAX_READER_PLUGIN_POSTGRESQL; case ORACLE: return DATAX_READER_PLUGIN_ORACLE; case SQLSERVER: return DATAX_READER_PLUGIN_SQLSERVER; default: return null; } }  static String getReaderPluginName(DbType dbType); static String getWriterPluginName(DbType dbType); static SQLStatementParser getSqlStatementParser(DbType dbType, String sql); static String[] convertKeywordsColumns(DbType dbType, String[] columns); static String doConvertKeywordsColumn(DbType dbType, String column); static final String DATAX_READER_PLUGIN_MYSQL; static final String DATAX_READER_PLUGIN_POSTGRESQL; static final String DATAX_READER_PLUGIN_ORACLE; static final String DATAX_READER_PLUGIN_SQLSERVER; static final String DATAX_WRITER_PLUGIN_MYSQL; static final String DATAX_WRITER_PLUGIN_POSTGRESQL; static final String DATAX_WRITER_PLUGIN_ORACLE; static final String DATAX_WRITER_PLUGIN_SQLSERVER; }### Answer:
@Test public void testGetReaderPluginName() { assertEquals(DataxUtils.DATAX_READER_PLUGIN_MYSQL, DataxUtils.getReaderPluginName(DbType.MYSQL)); assertEquals(DataxUtils.DATAX_READER_PLUGIN_POSTGRESQL, DataxUtils.getReaderPluginName(DbType.POSTGRESQL)); assertEquals(DataxUtils.DATAX_READER_PLUGIN_SQLSERVER, DataxUtils.getReaderPluginName(DbType.SQLSERVER)); assertEquals(DataxUtils.DATAX_READER_PLUGIN_ORACLE, DataxUtils.getReaderPluginName(DbType.ORACLE)); assertTrue(DataxUtils.getReaderPluginName(DbType.DB2) == null); }