public void test_write_trans() {
MockDataSource.clearTrace();
TGroupDataSource tgds = new TGroupDataSource();
tgds.setDbGroupKey("dbKey0");
List<DataSourceWrapper> dataSourceWrappers = new ArrayList<DataSourceWrapper>();
MockDataSource db1 = new MockDataSource("db", "db1");
MockDataSource db2 = new MockDataSource("db", "db2");
DataSourceWrapper dsw1 = new DataSourceWrapper("db1", "w", db1, DBType.MYSQL);
DataSourceWrapper dsw2 = new DataSourceWrapper("db2", "r", db2, DBType.MYSQL);
dataSourceWrappers.add(dsw1);
dataSourceWrappers.add(dsw2);
tgds.init(dataSourceWrappers);