HHH-15354 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/hbm/mappingexception/Person.java

@@ -0,0 +1,23 @@
+package org.hibernate.orm.test.hbm.mappingexception;
+
+public class Person {
+
+	private long id;
+	private boolean name;
+
+	public long getId() {
+		return id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	public boolean isName() {
+		return name;
+	}
+
+	public void setName(boolean name) {
+		this.name = name;
+	}
+}

hibernate-core/src/test/java/org/hibernate/orm/test/hbm/mappingexception/UnmappedAssociationExceptioTest.java

@@ -0,0 +1,32 @@
+package org.hibernate.orm.test.hbm.mappingexception;
+
+import org.hibernate.MappingException;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistry;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+
+import org.hibernate.testing.TestForIssue;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class UnmappedAssociationExceptioTest {
+
+	@Test
+	@TestForIssue( jiraKey = "HHH-15354")
+	public void mappingExceptionTest() {
+		StandardServiceRegistry ssr = new StandardServiceRegistryBuilder().build();
+		try {
+			assertThrows( MappingException.class, () -> {
+				new MetadataSources( ssr )
+						.addResource( "org/hibernate/orm/test/hbm/mappingexception/unmapped_association.hbm.xml" )
+						.buildMetadata();
+
+			} );
+		}
+		finally {
+			ssr.close();
+		}
+
+	}
+}

hibernate-core/src/test/java/org/hibernate/orm/test/hbm/mappingexception/unmapped_association.hbm.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<!--
+  ~ 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>.
+  -->
+<!DOCTYPE hibernate-mapping SYSTEM "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd" >
+
+<hibernate-mapping package="org.hibernate.orm.test.hbm.mappingexception">
+
+    <class name="Person">
+        <id column="PERSON_ID" name="id">
+            <generator class="increment"/>
+        </id>
+        <property column="PERSON_NAME" name="name"/>
+        <many-to-one class="UnmappedClass" column="UNMAPPED_ID" name="unmapped"/>
+    </class>
+
+</hibernate-mapping>