Remove most usages of 1-arg Script ctor (#24325)

The one argument ctor for `Script` creates a script with the
default language but most usages of are for testing and either
don't care about the language or are for use with
`MockScriptEngine`. This replaces most usages of the one argument
ctor on `Script` with calls to `ESTestCase#mockScript` to make
it clear that the tests don't need the default scripting language.

I've also factored out some copy and pasted script generation
code into a single place. I would have had to change that code
to use `mockScript` anyway, so it was easier to perform the
refactor.

Relates to #16314

3 files changed, 7 insertions, 47 deletions

diff --git a/core/src/test/java/org/elasticsearch/search/aggregations/bucket/SignificantTermsTests.java b/core/src/test/java/org/elasticsearch/search/aggregations/bucket/SignificantTermsTests.java
index f545ae500a..9fe1c0ea47 100644
--- a/core/src/test/java/org/elasticsearch/search/aggregations/bucket/SignificantTermsTests.java
+++ b/core/src/test/java/org/elasticsearch/search/aggregations/bucket/SignificantTermsTests.java
@@ -22,7 +22,6 @@ package org.elasticsearch.search.aggregations.bucket;
 import org.apache.lucene.util.BytesRef;
 import org.apache.lucene.util.automaton.RegExp;
 import org.elasticsearch.index.query.QueryBuilders;
-import org.elasticsearch.script.Script;
 import org.elasticsearch.search.aggregations.BaseAggregationTestCase;
 import org.elasticsearch.search.aggregations.bucket.significant.SignificantTermsAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.significant.heuristics.ChiSquare;
@@ -34,6 +33,7 @@ import org.elasticsearch.search.aggregations.bucket.significant.heuristics.Scrip
 import org.elasticsearch.search.aggregations.bucket.significant.heuristics.SignificanceHeuristic;
 import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregatorFactory.ExecutionMode;
 import org.elasticsearch.search.aggregations.bucket.terms.support.IncludeExclude;
+
 import java.util.SortedSet;
 import java.util.TreeSet;
 
@@ -54,21 +54,8 @@ public class SignificantTermsTests extends BaseAggregationTestCase<SignificantTe
         String name = randomAlphaOfLengthBetween(3, 20);
         SignificantTermsAggregationBuilder factory = new SignificantTermsAggregationBuilder(name, null);
         String field = randomAlphaOfLengthBetween(3, 20);
-        int randomFieldBranch = randomInt(2);
-        switch (randomFieldBranch) {
-        case 0:
-            factory.field(field);
-            break;
-        case 1:
-            factory.field(field);
-            factory.script(new Script("_value + 1"));
-            break;
-        case 2:
-            factory.script(new Script("doc[" + field + "] + 1"));
-            break;
-        default:
-            fail();
-        }
+        randomFieldOrScript(factory, field);
+
         if (randomBoolean()) {
             factory.missing("MISSING");
         }
@@ -179,7 +166,7 @@ public class SignificantTermsTests extends BaseAggregationTestCase<SignificantTe
                 significanceHeuristic = new MutualInformation(randomBoolean(), randomBoolean());
                 break;
             case 4:
-                significanceHeuristic = new ScriptHeuristic(new Script("foo"));
+                significanceHeuristic = new ScriptHeuristic(mockScript("foo"));
                 break;
             case 5:
                 significanceHeuristic = new JLHScore();
diff --git a/core/src/test/java/org/elasticsearch/search/aggregations/bucket/TermsTests.java b/core/src/test/java/org/elasticsearch/search/aggregations/bucket/TermsTests.java
index d0a38d0890..42f6ef78f4 100644
--- a/core/src/test/java/org/elasticsearch/search/aggregations/bucket/TermsTests.java
+++ b/core/src/test/java/org/elasticsearch/search/aggregations/bucket/TermsTests.java
@@ -21,13 +21,13 @@ package org.elasticsearch.search.aggregations.bucket;
 
 import org.apache.lucene.util.BytesRef;
 import org.apache.lucene.util.automaton.RegExp;
-import org.elasticsearch.script.Script;
 import org.elasticsearch.search.aggregations.Aggregator.SubAggCollectionMode;
 import org.elasticsearch.search.aggregations.BaseAggregationTestCase;
 import org.elasticsearch.search.aggregations.bucket.terms.Terms;
 import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregatorFactory.ExecutionMode;
 import org.elasticsearch.search.aggregations.bucket.terms.support.IncludeExclude;
+
 import java.util.ArrayList;
 import java.util.List;
 import java.util.SortedSet;
@@ -50,21 +50,7 @@ public class TermsTests extends BaseAggregationTestCase<TermsAggregationBuilder>
         String name = randomAlphaOfLengthBetween(3, 20);
         TermsAggregationBuilder factory = new TermsAggregationBuilder(name, null);
         String field = randomAlphaOfLengthBetween(3, 20);
-        int randomFieldBranch = randomInt(2);
-        switch (randomFieldBranch) {
-        case 0:
-            factory.field(field);
-            break;
-        case 1:
-            factory.field(field);
-            factory.script(new Script("_value + 1"));
-            break;
-        case 2:
-            factory.script(new Script("doc[" + field + "] + 1"));
-            break;
-        default:
-            fail();
-        }
+        randomFieldOrScript(factory, field);
         if (randomBoolean()) {
             factory.missing("MISSING");
         }
diff --git a/core/src/test/java/org/elasticsearch/search/aggregations/bucket/sampler/DiversifiedAggregationBuilderTests.java b/core/src/test/java/org/elasticsearch/search/aggregations/bucket/sampler/DiversifiedAggregationBuilderTests.java
index eed258bb78..635cedcb09 100644
--- a/core/src/test/java/org/elasticsearch/search/aggregations/bucket/sampler/DiversifiedAggregationBuilderTests.java
+++ b/core/src/test/java/org/elasticsearch/search/aggregations/bucket/sampler/DiversifiedAggregationBuilderTests.java
@@ -19,7 +19,6 @@
 
 package org.elasticsearch.search.aggregations.bucket.sampler;
 
-import org.elasticsearch.script.Script;
 import org.elasticsearch.search.aggregations.BaseAggregationTestCase;
 import org.elasticsearch.search.aggregations.bucket.sampler.SamplerAggregator.ExecutionMode;
 
@@ -29,19 +28,7 @@ public class DiversifiedAggregationBuilderTests extends BaseAggregationTestCase<
     protected final DiversifiedAggregationBuilder createTestAggregatorBuilder() {
         DiversifiedAggregationBuilder factory = new DiversifiedAggregationBuilder("foo");
         String field = randomNumericField();
-        int randomFieldBranch = randomInt(3);
-        switch (randomFieldBranch) {
-        case 0:
-            factory.field(field);
-            break;
-        case 1:
-            factory.field(field);
-            factory.script(new Script("_value + 1"));
-            break;
-        case 2:
-            factory.script(new Script("doc[" + field + "] + 1"));
-            break;
-        }
+        randomFieldOrScript(factory, field);
         if (randomBoolean()) {
             factory.missing("MISSING");
         }