Align JPA sample with Hibernate 5.1’s table naming

The name of the table for a many-to-many relationship has changed in
Hibernate 5.1.

This commit updates the JPA sample’s import.sql accordingly. It also
updates the repository integration tests to verify that the data has
been imported successfully.

Closes gh-5880

spring-boot-samples/spring-boot-sample-jpa/src/main/resources/import.sql

@@ -7,11 +7,11 @@ insert into note(title, body) values ('Spring Framework', 'Core support for depe
 insert into note(title, body) values ('Spring Integration', 'Extends the Spring programming model to support the well-known Enterprise Integration Patterns.')
 insert into note(title, body) values ('Tomcat', 'Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies.')
 
-insert into note_tags(notes_id, tags_id) values (1, 1)
-insert into note_tags(notes_id, tags_id) values (2, 1)
-insert into note_tags(notes_id, tags_id) values (3, 1)
-insert into note_tags(notes_id, tags_id) values (1, 3)
-insert into note_tags(notes_id, tags_id) values (2, 3)
-insert into note_tags(notes_id, tags_id) values (3, 3)
-insert into note_tags(notes_id, tags_id) values (4, 2)
-insert into note_tags(notes_id, tags_id) values (4, 3)
+insert into note_tag(notes_id, tags_id) values (1, 1)
+insert into note_tag(notes_id, tags_id) values (2, 1)
+insert into note_tag(notes_id, tags_id) values (3, 1)
+insert into note_tag(notes_id, tags_id) values (1, 3)
+insert into note_tag(notes_id, tags_id) values (2, 3)
+insert into note_tag(notes_id, tags_id) values (3, 3)
+insert into note_tag(notes_id, tags_id) values (4, 2)
+insert into note_tag(notes_id, tags_id) values (4, 3)
\ No newline at end of file

spring-boot-samples/spring-boot-sample-jpa/src/test/java/sample/jpa/repository/JpaNoteRepositoryIntegrationTests.java

@@ -24,6 +24,7 @@ import sample.jpa.domain.Note;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.transaction.annotation.Transactional;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -34,6 +35,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@Transactional
 public class JpaNoteRepositoryIntegrationTests {
 
 	@Autowired
@@ -43,6 +45,9 @@ public class JpaNoteRepositoryIntegrationTests {
 	public void findsAllNotes() {
 		List<Note> notes = this.repository.findAll();
 		assertThat(notes).hasSize(4);
+		for (Note note : notes) {
+			assertThat(note.getTags().size()).isGreaterThan(0);
+		}
 	}
 
 }

spring-boot-samples/spring-boot-sample-jpa/src/test/java/sample/jpa/repository/JpaTagRepositoryIntegrationTests.java

@@ -24,6 +24,7 @@ import sample.jpa.domain.Tag;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.transaction.annotation.Transactional;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -34,6 +35,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@Transactional
 public class JpaTagRepositoryIntegrationTests {
 
 	@Autowired
@@ -43,6 +45,9 @@ public class JpaTagRepositoryIntegrationTests {
 	public void findsAllTags() {
 		List<Tag> tags = this.repository.findAll();
 		assertThat(tags).hasSize(3);
+		for (Tag tag : tags) {
+			assertThat(tag.getNotes().size()).isGreaterThan(0);
+		}
 	}
 
 }