Rename random ASCII helper methods

This commit renames the random ASCII helper methods in ESTestCase. This
is because this method ultimately uses the random ASCII methods from
randomized runner, but these methods actually only produce random
strings generated from [a-zA-Z].

Relates #23886

1 files changed, 2 insertions, 2 deletions

diff --git a/core/src/test/java/org/elasticsearch/action/fieldcaps/FieldCapabilitiesResponseTests.java b/core/src/test/java/org/elasticsearch/action/fieldcaps/FieldCapabilitiesResponseTests.java
index 8d64f9a538..2eaf1d4832 100644
--- a/core/src/test/java/org/elasticsearch/action/fieldcaps/FieldCapabilitiesResponseTests.java
+++ b/core/src/test/java/org/elasticsearch/action/fieldcaps/FieldCapabilitiesResponseTests.java
@@ -32,11 +32,11 @@ public class FieldCapabilitiesResponseTests extends ESTestCase {
         Map<String, Map<String, FieldCapabilities> > fieldMap = new HashMap<> ();
         int numFields = randomInt(10);
         for (int i = 0; i < numFields; i++) {
-            String fieldName = randomAsciiOfLengthBetween(5, 10);
+            String fieldName = randomAlphaOfLengthBetween(5, 10);
             int numIndices = randomIntBetween(1, 5);
             Map<String, FieldCapabilities> indexFieldMap = new HashMap<> ();
             for (int j = 0; j < numIndices; j++) {
-                String index = randomAsciiOfLengthBetween(10, 20);
+                String index = randomAlphaOfLengthBetween(10, 20);
                 indexFieldMap.put(index, FieldCapabilitiesTests.randomFieldCaps());
             }
             fieldMap.put(fieldName, indexFieldMap);