@After
  public void tearDown() throws Exception {
    TableName tableName = name.getTableName();
    try (Admin admin = conn.getAdmin()) {
      admin.disableTable(tableName);
      admin.deleteTable(tableName);
    }
    conn.close();
  }
Test basic read write operation with different {@link ConnectionRegistry} implementations.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestBasicReadWriteWithDifferentConnectionRegistries.java