diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/BookJpaRepository.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/BookJpaRepository.java
index 2fd6c8df..c365c957 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/BookJpaRepository.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/BookJpaRepository.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020-2023 the original author or authors.
+ *
+ * Licensed 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
+ *
+ *      https://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.springframework.graphql.data.query.jpa;
 
 import org.springframework.data.jpa.repository.JpaRepository;
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/QueryByExampleDataFetcherJpaTests.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/QueryByExampleDataFetcherJpaTests.java
index 692eba2f..64353dd0 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/QueryByExampleDataFetcherJpaTests.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/jpa/QueryByExampleDataFetcherJpaTests.java
@@ -43,12 +43,10 @@ import org.springframework.graphql.BookSource;
 import org.springframework.graphql.ExecutionGraphQlResponse;
 import org.springframework.graphql.GraphQlSetup;
 import org.springframework.graphql.ResponseHelper;
-import org.springframework.graphql.data.pagination.ConnectionFieldTypeVisitor;
 import org.springframework.graphql.data.query.QueryByExampleDataFetcher;
 import org.springframework.graphql.data.query.ScrollPositionCursorStrategy;
 import org.springframework.graphql.data.query.ScrollSubrange;
 import org.springframework.graphql.data.query.WindowConnectionAdapter;
-import org.springframework.graphql.execution.ConnectionTypeDefinitionConfigurer;
 import org.springframework.graphql.execution.RuntimeWiringConfigurer;
 import org.springframework.graphql.server.WebGraphQlHandler;
 import org.springframework.graphql.server.WebGraphQlRequest;
@@ -67,7 +65,7 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 /**
- * Unit tests for {@link QueryByExampleDataFetcher}.
+ * Integration tests for {@link QueryByExampleDataFetcher} with JPA repository.
  */
 @SpringJUnitConfig
 class QueryByExampleDataFetcherJpaTests {
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookMongoRepository.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookMongoRepository.java
index be8a1f96..2a724633 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookMongoRepository.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookMongoRepository.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020-2023 the original author or authors.
+ *
+ * Licensed 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
+ *
+ *      https://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.springframework.graphql.data.query.mongo;
 
 import org.springframework.data.mongodb.repository.MongoRepository;
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookReactiveMongoRepository.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookReactiveMongoRepository.java
index bd36dc49..967615e3 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookReactiveMongoRepository.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/BookReactiveMongoRepository.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020-2023 the original author or authors.
+ *
+ * Licensed 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
+ *
+ *      https://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.springframework.graphql.data.query.mongo;
 
 import org.springframework.data.mongodb.repository.ReactiveMongoRepository;
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherMongoDbTests.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherMongoDbTests.java
index 03b752d3..1829aede 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherMongoDbTests.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherMongoDbTests.java
@@ -65,7 +65,7 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 /**
- * Unit tests for {@link QueryByExampleDataFetcher}.
+ * Integration tests for {@link QueryByExampleDataFetcher} with MongoDB repository.
  */
 @SpringJUnitConfig
 @Testcontainers(disabledWithoutDocker = true)
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherReactiveMongoDbTests.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherReactiveMongoDbTests.java
index b1df9302..2dc8c65c 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherReactiveMongoDbTests.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/mongo/QueryByExampleDataFetcherReactiveMongoDbTests.java
@@ -44,12 +44,10 @@ import org.springframework.data.repository.query.ReactiveQueryByExampleExecutor;
 import org.springframework.graphql.BookSource;
 import org.springframework.graphql.GraphQlSetup;
 import org.springframework.graphql.ResponseHelper;
-import org.springframework.graphql.data.pagination.ConnectionFieldTypeVisitor;
 import org.springframework.graphql.data.query.QueryByExampleDataFetcher;
 import org.springframework.graphql.data.query.ScrollPositionCursorStrategy;
 import org.springframework.graphql.data.query.ScrollSubrange;
 import org.springframework.graphql.data.query.WindowConnectionAdapter;
-import org.springframework.graphql.execution.ConnectionTypeDefinitionConfigurer;
 import org.springframework.graphql.execution.RuntimeWiringConfigurer;
 import org.springframework.graphql.server.WebGraphQlHandler;
 import org.springframework.graphql.server.WebGraphQlRequest;
@@ -61,7 +59,7 @@ import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Unit tests for {@link QueryByExampleDataFetcher}.
+ * Integration tests for {@link QueryByExampleDataFetcher} with reactive MongoDB repository.
  */
 @SpringJUnitConfig
 @Testcontainers(disabledWithoutDocker = true)
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Author.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Author.java
index a6c0c636..201a7646 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Author.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Author.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2002-2023 the original author or authors.
+ *
+ * Licensed 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.springframework.graphql.data.query.neo4j;
 
 import org.springframework.data.neo4j.core.schema.Id;
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Book.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Book.java
index 84a97c18..6af3f2b6 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Book.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/Book.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2021 the original author or authors.
+ * Copyright 2020-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookNeo4jRepository.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookNeo4jRepository.java
index e74d18e2..f2658cba 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookNeo4jRepository.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookNeo4jRepository.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2002-2023 the original author or authors.
+ *
+ * Licensed 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.springframework.graphql.data.query.neo4j;
 
 import org.springframework.data.neo4j.repository.Neo4jRepository;
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookReactiveNeo4jRepository.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookReactiveNeo4jRepository.java
index 8b857717..090803bc 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookReactiveNeo4jRepository.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/BookReactiveNeo4jRepository.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2002-2023 the original author or authors.
+ *
+ * Licensed 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.springframework.graphql.data.query.neo4j;
 
 import org.springframework.data.neo4j.repository.ReactiveNeo4jRepository;
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherNeo4jTests.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherNeo4jTests.java
index bd9fa19d..10eefad3 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherNeo4jTests.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherNeo4jTests.java
@@ -64,7 +64,7 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 /**
- * Unit tests for {@link QueryByExampleDataFetcher}.
+ * Integration tests for {@link QueryByExampleDataFetcher} with Neo4j repository.
  */
 @SpringJUnitConfig
 @Testcontainers(disabledWithoutDocker = true)
@@ -272,7 +272,9 @@ class QueryByExampleDataFetcherNeo4jTests {
 
 		@Bean
 		public Driver driver() {
-			return GraphDatabase.driver(neo4jContainer.getBoltUrl(), AuthTokens.basic("neo4j", neo4jContainer.getAdminPassword()));
+			return GraphDatabase.driver(
+					neo4jContainer.getBoltUrl(),
+					AuthTokens.basic("neo4j", neo4jContainer.getAdminPassword()));
 		}
 	}
 
diff --git a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherReactiveNeo4jDbTests.java b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherReactiveNeo4jDbTests.java
index d492e9ae..0de50aa1 100644
--- a/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherReactiveNeo4jDbTests.java
+++ b/spring-graphql/src/test/java/org/springframework/graphql/data/query/neo4j/QueryByExampleDataFetcherReactiveNeo4jDbTests.java
@@ -62,7 +62,7 @@ import java.util.stream.Collectors;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Unit tests for {@link QueryByExampleDataFetcher}.
+ * Integration tests for {@link QueryByExampleDataFetcher} with reactive Neo4j repository.
  */
 @SpringJUnitConfig
 @Testcontainers(disabledWithoutDocker = true)