HHH-15379 Add test for issue

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

@@ -0,0 +1,23 @@
+package org.hibernate.orm.test.hbm.mappingexception;
+
+
+public class Address {
+	private Long id;
+	private String details;
+
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getDetails() {
+		return details;
+	}
+
+	public void setDetails(String details) {
+		this.details = details;
+	}
+}

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

@@ -0,0 +1,35 @@
+package org.hibernate.orm.test.hbm.mappingexception;
+
+import java.util.Set;
+
+public class Employee {
+
+	private long id;
+	private boolean name;
+
+	private Set<Address> addresses;
+
+	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;
+	}
+
+	public Set<Address> getAddresses() {
+		return addresses;
+	}
+
+	public void setAddresses(Set<Address> addresses) {
+		this.addresses = addresses;
+	}
+}

hibernate-core/src/test/java/org/hibernate/orm/test/hbm/mappingexception/UnmappedCollectionExceptionTest.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 UnmappedCollectionExceptionTest {
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-15379")
+	public void mappingExceptionTest() {
+		StandardServiceRegistry ssr = new StandardServiceRegistryBuilder().build();
+		try {
+			assertThrows( MappingException.class, () -> {
+				new MetadataSources( ssr )
+						.addResource( "org/hibernate/orm/test/hbm/mappingexception/unmapped_collection.hbm.xml" )
+						.buildMetadata();
+
+			} );
+		}
+		finally {
+			ssr.close();
+		}
+
+	}
+}

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

@@ -0,0 +1,24 @@
+<?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="Employee">
+        <id column="EMPLOYEE_ID" name="id">
+            <generator class="increment"/>
+        </id>
+        <property column="EMPLOYEE_NAME" name="name"/>
+        <!-- Address has not a hbm mapping -->
+        <set name="addresses">
+            <key column="EMPLOYEE_ID"/>
+            <many-to-many class="Address"/>
+        </set>
+    </class>
+
+</hibernate-mapping>