From bb3d5b7426a19188635fc54a160c772bcb99618d Mon Sep 17 00:00:00 2001
From: Colin Goodheart-Smithe <colings86@users.noreply.github.com>
Date: Wed, 2 Aug 2017 16:36:11 +0100
Subject: [PATCH] [TEST] Fix internalMatrixStatsTests failure

---
 .../aggregations/matrix/stats/InternalMatrixStatsTests.java     | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/aggs-matrix-stats/src/test/java/org/elasticsearch/search/aggregations/matrix/stats/InternalMatrixStatsTests.java b/modules/aggs-matrix-stats/src/test/java/org/elasticsearch/search/aggregations/matrix/stats/InternalMatrixStatsTests.java
index 74238e69e57..69e14c14a7c 100644
--- a/modules/aggs-matrix-stats/src/test/java/org/elasticsearch/search/aggregations/matrix/stats/InternalMatrixStatsTests.java
+++ b/modules/aggs-matrix-stats/src/test/java/org/elasticsearch/search/aggregations/matrix/stats/InternalMatrixStatsTests.java
@@ -97,6 +97,8 @@ public class InternalMatrixStatsTests extends InternalAggregationTestCase<Intern
             name += randomAlphaOfLength(5);
             break;
         case 1:
+            String[] fields = Arrays.copyOf(this.fields, this.fields.length + 1);
+            fields[fields.length - 1] = "field_" + (fields.length - 1);
             double[] values = new double[fields.length];
             for (int i = 0; i < fields.length; i++) {
                 values[i] = randomDouble() * 200;