HHH-17514 Add test for issue to show that it has alredy been resolved

tooling/metamodel-generator/src/test/java/org/hibernate/processor/test/map/MapOfMapEntity.java

@@ -0,0 +1,30 @@
+package org.hibernate.processor.test.map;
+
+import java.util.Map;
+
+import org.hibernate.annotations.JdbcTypeCode;
+import org.hibernate.type.SqlTypes;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table( name = "MAP_OF_MAP_ENTITY" )
+public class MapOfMapEntity {
+	@Id
+	@Column(name="key_")
+	private String key;
+
+	@JdbcTypeCode(SqlTypes.JSON)
+	private Map<String, Map<String, Object>> mapOfMap;
+
+	public String getKey() {
+		return key;
+	}
+
+	public void setKey(String key) {
+		this.key = key;
+	}
+}

tooling/metamodel-generator/src/test/java/org/hibernate/processor/test/map/MetamodelGeneratedTest.java

@@ -0,0 +1,21 @@
+package org.hibernate.processor.test.map;
+
+import org.hibernate.processor.test.util.CompilationTest;
+import org.hibernate.processor.test.util.TestForIssue;
+import org.hibernate.processor.test.util.WithClasses;
+
+import org.junit.Test;
+import org.junit.jupiter.api.Assertions;
+
+import static org.hibernate.processor.test.util.TestUtil.getMetamodelClassFor;
+
+public class MetamodelGeneratedTest extends CompilationTest {
+
+	@Test
+	@WithClasses({ MapOfMapEntity.class })
+	@TestForIssue(jiraKey = " HHH-17514")
+	public void test() {
+		Class<?> repositoryClass = getMetamodelClassFor( MapOfMapEntity.class );
+		Assertions.assertNotNull( repositoryClass );
+	}
+}