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 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.elasticsearch.client.indices;

import org.apache.lucene.util.LuceneTestCase.AwaitsFix;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.RandomCreateIndexGenerator;
import org.elasticsearch.test.AbstractXContentTestCase;

import java.io.IOException;

@AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/37654")
public class PutMappingRequestTests extends AbstractXContentTestCase<PutMappingRequest> {

    @Override
    protected PutMappingRequest createTestInstance() {
        PutMappingRequest request = new PutMappingRequest();
        if (frequently()) {
            try {
                XContentBuilder builder = RandomCreateIndexGenerator.randomMapping();
                request.source(builder);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return request;
    }

    @Override
    protected PutMappingRequest doParseInstance(XContentParser parser) throws IOException {
        PutMappingRequest request = new PutMappingRequest();
        request.source(parser.map());
        return request;
    }

    @Override
    protected boolean supportsUnknownFields() {
        return false;
    }

    @Override
    protected void assertEqualInstances(PutMappingRequest expected, PutMappingRequest actual) {
        try (XContentParser expectedJson = createParser(expected.xContentType().xContent(), expected.source());
             XContentParser actualJson = createParser(actual.xContentType().xContent(), actual.source())) {
            assertEquals(expectedJson.mapOrdered(), actualJson.mapOrdered());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

@@ -830,64 +830,8 @@
 s;%0A%0A
-import org.apache.lucene.util.LuceneTestCase.AwaitsFix;%0A
 impo
@@ -1089,85 +1089,30 @@
 on;%0A
-%0A@AwaitsFix(bugUrl = %22https://github.com/elastic/elasticsearch/issues/37654%22)
+import java.util.Map;%0A
 %0Apub
@@ -1821,37 +1821,128 @@
     
-request.source(parser.map());
+Map%3CString, Object%3E map = parser.map();%0A        if (map.isEmpty() == false) %7B%0A            request.source(map);%0A        %7D
 %0A   
@@ -2166,24 +2166,67 @@
 t actual) %7B%0A
+        if (actual.source() != null) %7B%0A    
         try 
@@ -2330,32 +2330,39 @@
 );%0A             
+      
+ 
 XContentParser a
@@ -2452,16 +2452,20 @@
         
+    
 assertEq
@@ -2522,32 +2522,36 @@
 red());%0A        
+ 
+   
 %7D catch (IOExcep
@@ -2552,32 +2552,36 @@
 OException e) %7B%0A
+    
             thro
@@ -2599,32 +2599,190 @@
 meException(e);%0A
+            %7D%0A        %7D else %7B%0A            // if the original %60source%60 is null, the parsed source should be so too%0A            assertNull(expected.source());%0A
         %7D%0A    %7D%0A

Fix edge case in PutMappingRequestTests (#37665)