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unit test for derivative of metric agg with gaps

This commit is contained in:
Colin Goodheart-Smithe 2015-04-22 10:06:22 +01:00
parent 89d424e074
commit f6934e0410
1 changed files with 35 additions and 0 deletions
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35
src/test/java/org/elasticsearch/search/aggregations/reducers/DerivativeTests.java
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@ -45,6 +45,7 @@ import static org.elasticsearch.search.aggregations.AggregationBuilders.sum;
import static org.elasticsearch.search.aggregations.reducers.ReducerBuilders.derivative;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertSearchResponse;
import static org.hamcrest.Matchers.closeTo;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.core.IsNull.notNullValue;
import static org.hamcrest.core.IsNull.nullValue;
@ -424,6 +425,40 @@ public class DerivativeTests extends ElasticsearchIntegrationTest {
}
}
@Test
public void singleValueAggDerivativeWithGaps() throws Exception {
SearchResponse searchResponse = client()
.prepareSearch("empty_bucket_idx")
.setQuery(matchAllQuery())
.addAggregation(
histogram("histo").field(SINGLE_VALUED_FIELD_NAME).interval(1).minDocCount(0)
.subAggregation(sum("sum").field(SINGLE_VALUED_FIELD_NAME))
.subAggregation(derivative("deriv").setBucketsPaths("sum"))).execute().actionGet();
assertThat(searchResponse.getHits().getTotalHits(), equalTo(numDocsEmptyIdx));
InternalHistogram<Bucket> deriv = searchResponse.getAggregations().get("histo");
assertThat(deriv, Matchers.notNullValue());
assertThat(deriv.getName(), equalTo("histo"));
List<Bucket> buckets = deriv.getBuckets();
assertThat(buckets.size(), equalTo(valueCounts_empty.length));
double lastSumValue = Double.NaN;
for (int i = 0; i < valueCounts_empty.length; i++) {
Histogram.Bucket bucket = buckets.get(i);
checkBucketKeyAndDocCount("Bucket " + i, bucket, i, valueCounts_empty[i]);
Sum sum = bucket.getAggregations().get("sum");
double thisSumValue = sum.value();
SimpleValue docCountDeriv = bucket.getAggregations().get("deriv");
if (i == 0) {
assertThat(docCountDeriv, nullValue());
} else {
assertThat(docCountDeriv.value(), closeTo(thisSumValue - lastSumValue, 0.00001));
}
lastSumValue = thisSumValue;
}
}
private void checkBucketKeyAndDocCount(final String msg, final Histogram.Bucket bucket, final long expectedKey,
final long expectedDocCount) {
assertThat(msg, bucket, notNullValue());