fix mocking in more unit tests

Author: martijnvg

plugins/mapper-murmur3/src/test/java/org/elasticsearch/index/mapper/murmur3/Murmur3FieldMapperTests.java

@@ -99,6 +99,7 @@ protected void assertFetch(MapperService mapperService, String field, Object val
                 .build(new IndexFieldDataCache.None(), new NoneCircuitBreakerService())
         );
         SearchExecutionContext searchExecutionContext = mock(SearchExecutionContext.class);
+        when(searchExecutionContext.getIndexSettings()).thenReturn(mapperService.getIndexSettings());
         when(searchExecutionContext.isSourceEnabled()).thenReturn(true);
         when(searchExecutionContext.sourcePath(field)).thenReturn(Set.of(field));
         when(searchExecutionContext.getForField(ft, fdt)).thenAnswer(inv -> fieldDataLookup(mapperService).apply(ft, () -> {

x-pack/plugin/rank-vectors/src/test/java/org/elasticsearch/xpack/rank/vectors/mapper/RankVectorsFieldMapperTests.java

@@ -374,6 +374,7 @@ protected void assertFetch(MapperService mapperService, String field, Object val
         MappedFieldType.FielddataOperation fdt = MappedFieldType.FielddataOperation.SEARCH;
         SourceToParse source = source(b -> b.field(ft.name(), value));
         SearchExecutionContext searchExecutionContext = mock(SearchExecutionContext.class);
+        when(searchExecutionContext.getIndexSettings()).thenReturn(mapperService.getIndexSettings());
         when(searchExecutionContext.isSourceEnabled()).thenReturn(true);
         when(searchExecutionContext.sourcePath(field)).thenReturn(Set.of(field));
         when(searchExecutionContext.getForField(ft, fdt)).thenAnswer(inv -> fieldDataLookup(mapperService).apply(ft, () -> {