HHH-15285 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/metamodel/MetamodelJavaTypeTest.java

@@ -0,0 +1,39 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * 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.orm.test.metamodel;
+
+import java.util.List;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForInterfaceTypes.assertThat;
+
+@Jpa(
+		annotatedClasses = {
+				TestEntity.class,
+				Person.class
+		}
+)
+@TestForIssue(jiraKey = "HHH-15285")
+public class MetamodelJavaTypeTest {
+
+	@Test
+	public void testJavaType(EntityManagerFactoryScope scope) {
+		scope.inEntityManager(
+				entityManager -> {
+					assertThat( TestEntity_.people.getJavaType() ).isEqualTo( List.class );
+
+					assertThat( TestEntity_.addresses.getJavaType() ).isEqualTo( List.class );
+
+					assertThat( TestEntity_.elementCollection.getJavaType() ).isEqualTo( List.class );
+				}
+		);
+	}
+}

hibernate-core/src/test/java/org/hibernate/orm/test/metamodel/TestEntity.java

@@ -0,0 +1,29 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * 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.orm.test.metamodel;
+
+import java.util.List;
+
+import jakarta.persistence.ElementCollection;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+
+@Entity
+public class TestEntity {
+	@Id
+	private int id;
+
+	@OneToMany
+	private List<Person> people;
+
+	@ElementCollection
+	private List<Address> addresses;
+
+	@ElementCollection
+	private List<String> elementCollection;
+}