HSEARCH-3323 Test basic scrolling with mapper orm

integrationtest/mapper/orm/src/test/java/org/hibernate/search/integrationtest/mapper/orm/search/loading/AbstractSearchQueryEntityLoadingIT.java

@@ -79,16 +79,7 @@ protected final <T> void testLoading(
 			hitDocumentReferencesContributor.accept( documentReferenceCollector );
 			List<DocumentReference> hitDocumentReferences = documentReferenceCollector.collected;
 
-			backendMock.expectSearchObjects(
-					targetIndexes,
-					b -> { },
-					StubSearchWorkBehavior.of(
-							hitDocumentReferences.size(),
-							hitDocumentReferences
-					)
-			);
-
-			List<T> loadedEntities = query.fetchAllHits();
+			List<T> loadedEntities = getHits( targetIndexes, query, hitDocumentReferences );
 
 			softAssertions.assertThat( loadedEntities )
 					.as(
@@ -125,6 +116,19 @@ protected final <T> void testLoading(
 		} );
 	}
 
+	protected <T> List<T> getHits(List<String> targetIndexes, SearchQuery<T> query, List<DocumentReference> hitDocumentReferences) {
+		backendMock.expectSearchObjects(
+				targetIndexes,
+				b -> { },
+				StubSearchWorkBehavior.of(
+						hitDocumentReferences.size(),
+						hitDocumentReferences
+				)
+		);
+
+		return query.fetchAllHits();
+	}
+
 	// This cast is fine as long as T is not a proxy interface
 	@SuppressWarnings("unchecked")
 	private <T> List<T> unproxyAll(List<T> entityList) {

integrationtest/mapper/orm/src/test/java/org/hibernate/search/integrationtest/mapper/orm/search/loading/SearchQueryEntityLoadingScrollingIT.java

@@ -0,0 +1,46 @@
+/*
+ * Hibernate Search, full-text search for your domain model
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.search.integrationtest.mapper.orm.search.loading;
+
+import java.util.List;
+
+import org.hibernate.search.engine.backend.common.DocumentReference;
+import org.hibernate.search.engine.search.query.SearchQuery;
+import org.hibernate.search.engine.search.query.SearchScroll;
+import org.hibernate.search.engine.search.query.SearchScrollResult;
+import org.hibernate.search.util.impl.integrationtest.common.rule.StubSearchWorkBehavior;
+
+public class SearchQueryEntityLoadingScrollingIT extends SearchQueryEntityLoadingBaseIT {
+
+	public SearchQueryEntityLoadingScrollingIT(SingleTypeLoadingModelPrimitives primitives) {
+		super( primitives );
+	}
+
+	@Override
+	protected <T> List<T> getHits(List<String> targetIndexes, SearchQuery<T> query, List<DocumentReference> hitDocumentReferences) {
+		backendMock.expectScrollObjects(
+				targetIndexes,
+				hitDocumentReferences.size(),
+				b -> { }
+		);
+
+		backendMock.expectNextScroll(
+				targetIndexes,
+				StubSearchWorkBehavior.of(
+						hitDocumentReferences.size(),
+						hitDocumentReferences
+				)
+		);
+
+		backendMock.expectCloseScroll( targetIndexes );
+
+		try ( SearchScroll<T> scroll = query.scroll( hitDocumentReferences.size() ) ) {
+			SearchScrollResult<T> next = scroll.next();
+			return next.hits();
+		}
+	}
+}