@Test
  public void testGroupByWithLookupDimensionSpec()
  {
    Map<String, String> map = new HashMap<>();
    map.put("automotive", "health105");
    map.put("business", "health20");
    map.put("entertainment", "travel47");
    map.put("health", "health55");
    map.put("mezzanine", "health09");
    map.put("news", "health0000");
    map.put("premium", "health999");
    map.put("technology", "travel123");
    map.put("travel", "travel555");

    GroupByQuery innerQuery = GroupByQuery
        .builder()
        .setDataSource(QueryRunnerTestHelper.dataSource)
        .setQuerySegmentSpec(QueryRunnerTestHelper.firstToThird)
        .setDimensions(
            Lists.<DimensionSpec>newArrayList(
                new LookupDimensionSpec(
                    "quality",
                    "alias",
                    new MapLookupExtractor(map, false),
                    false,
                    null,
                    null,
                    null,
                    true
                    )
                )
            )
        .setAggregatorSpecs(
            Arrays.<AggregatorFactory>asList(
                QueryRunnerTestHelper.rowsCount
            )
        )
        .setGranularity(QueryRunnerTestHelper.allGran)
        .build();

    GroupByQuery outerQuery = GroupByQuery
        .builder()
        .setDataSource(new QueryDataSource(innerQuery))
        .setQuerySegmentSpec(QueryRunnerTestHelper.firstToThird)
        .setDimensions(
            Lists.<DimensionSpec>newArrayList(
                new DefaultDimensionSpec("alias", "alias")
            )
        )
        .setAggregatorSpecs(
            Arrays.<AggregatorFactory>asList(
                new LongSumAggregatorFactory(
                    QueryRunnerTestHelper.rowsCount.getName(),
                    QueryRunnerTestHelper.rowsCount.getName()
                )
            )
        )
        .setGranularity(QueryRunnerTestHelper.allGran)
        .build();

    List<Row> expectedResults = Arrays.asList(
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "health0000", "rows", 2L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "health09", "rows", 6L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "health105", "rows", 2L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "health20", "rows", 2L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "health55", "rows", 2L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "health999", "rows", 6L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "travel123", "rows", 2L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "travel47", "rows", 2L),
        GroupByQueryRunnerTestHelper.createExpectedRow("2011-04-01", "alias", "travel555", "rows", 2L)
    );

    Iterable<Row> results = GroupByQueryRunnerTestHelper.runQuery(factory, runner, outerQuery);
    TestHelper.assertExpectedObjects(expectedResults, results, "");
  }