added unit tests

Author: martijnvg

test/framework/src/main/java/org/elasticsearch/index/mapper/AbstractScriptFieldTypeTestCase.java

@@ -55,6 +55,9 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 public abstract class AbstractScriptFieldTypeTestCase extends MapperServiceTestCase {
@@ -420,6 +423,43 @@ public final void testCacheable() throws IOException {
         }
     }
 
+    public final void testIsParsedFromSource() throws IOException {
+        XContentBuilder mapping = runtimeMapping(b -> {
+            b.startObject("field")
+                .field("type", typeName())
+                .startObject("script")
+                .field("source", "dummy_source")
+                .field("lang", "test")
+                .endObject()
+                .endObject()
+                .startObject("field_source")
+                .field("type", typeName())
+                .startObject("script")
+                .field("source", "deterministic_source")
+                .field("lang", "test")
+                .endObject()
+                .endObject();
+        });
+        MapperService mapperService = createMapperService(mapping);
+        SearchExecutionContext c = createSearchExecutionContext(mapperService);
+        {
+            var fieldType = (AbstractScriptFieldType) c.getFieldType("field_source");
+            SearchLookup searchLookup = mock(SearchLookup.class);
+            when(searchLookup.optimizedSourceProvider(any())).thenReturn(searchLookup);
+            var result = fieldType.leafFactory(searchLookup);
+            assertNotNull(result);
+            verify(searchLookup, times(1)).optimizedSourceProvider(any());
+        }
+        {
+            var fieldType = (AbstractScriptFieldType) c.getFieldType("field");
+            SearchLookup searchLookup = mock(SearchLookup.class);
+            when(searchLookup.optimizedSourceProvider(any())).thenReturn(searchLookup);
+            var result = fieldType.leafFactory(searchLookup);
+            assertNotNull(result);
+            verify(searchLookup, never()).optimizedSourceProvider(any());
+        }
+    }
+
     protected final List<Object> blockLoaderReadValuesFromColumnAtATimeReader(DirectoryReader reader, MappedFieldType fieldType, int offset)
         throws IOException {
         BlockLoader loader = fieldType.blockLoader(blContext());