@Test
public void testGetKey() throws Exception {

  Row row =
      new Row(
          TABLE, ImmutableMap.of(ID_COLUMN, new Column(TABLE.getColumns().get(ID_COLUMN), 1234)));
  MysqlMutation mutation = new MysqlInsertMutation(MUTATION_METADATA, row);
  assertEquals("test:users:1234", MysqlKeyProvider.INSTANCE.get(mutation));
}