boo

Author: tlrx

core/src/test/java/org/elasticsearch/search/aggregations/bucket/range/InternalBinaryRangeTests.java

@@ -70,9 +70,11 @@ protected InternalBinaryRange createTestInstance(String name,
                                                      boolean keyed) {
         DocValueFormat format = DocValueFormat.RAW;
         List<InternalBinaryRange.Bucket> buckets = new ArrayList<>();
+
+        int nullKey = randomBoolean() ? randomIntBetween(0, ranges.size() -1) : -1;
         for (int i = 0; i < ranges.size(); ++i) {
             final int docCount = randomIntBetween(1, 100);
-            final String key = i > 0 ? randomAlphaOfLength(10) : null;
+            final String key = (i == nullKey) ? null: randomAlphaOfLength(10);
             buckets.add(new InternalBinaryRange.Bucket(format, keyed, key, ranges.get(i).v1(), ranges.get(i).v2(), docCount, aggregations));
         }
         return new InternalBinaryRange(name, format, keyed, buckets, pipelineAggregators, metaData);