HHH-10553 - add test for issue

hibernate-core/src/test/java/org/hibernate/test/schemaupdate/inheritance/tableperclass/Category.java

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+/*
+ * 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.test.schemaupdate.inheritance.tableperclass;
+
+import javax.persistence.Entity;
+import javax.persistence.Table;
+
+
+/**
+ * @author Andrea Boriero
+ */
+@Entity
+@Table(name = "CATEGORY")
+public class Category extends Element {
+}

hibernate-core/src/test/java/org/hibernate/test/schemaupdate/inheritance/tableperclass/Element.java

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+/*
+ * 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.test.schemaupdate.inheritance.tableperclass;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Inheritance;
+import javax.persistence.InheritanceType;
+
+import org.hibernate.annotations.NaturalId;
+
+/**
+ * @author Andrea Boriero
+ */
+@Entity
+@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
+public abstract class Element {
+	@Id
+	@GeneratedValue
+	private Long id;
+
+	@Column(unique = true)
+	@NaturalId
+	private String code;
+}

hibernate-core/src/test/java/org/hibernate/test/schemaupdate/inheritance/tableperclass/SchemaCreationTest.java

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+/*
+ * 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.test.schemaupdate.inheritance.tableperclass;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.util.List;
+
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistry;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.boot.spi.MetadataImplementor;
+import org.hibernate.tool.hbm2ddl.SchemaExport;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.hibernate.testing.TestForIssue;
+
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * @author Andrea Boriero
+ */
+public class SchemaCreationTest {
+	private File output;
+	private StandardServiceRegistry ssr;
+	private MetadataImplementor metadata;
+
+	@Before
+	public void setUp() throws IOException {
+		output = File.createTempFile( "update_script", ".sql" );
+		output.deleteOnExit();
+		ssr = new StandardServiceRegistryBuilder().build();
+	}
+
+	@After
+	public void tearsDown() {
+		StandardServiceRegistryBuilder.destroy( ssr );
+	}
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-10553")
+	public void testUniqueConstraintIsCorrectlyGenerated() throws Exception {
+
+		final MetadataSources metadataSources = new MetadataSources( ssr );
+
+		metadataSources.addAnnotatedClass( Element.class );
+		metadataSources.addAnnotatedClass( Category.class );
+		metadata = (MetadataImplementor) metadataSources.buildMetadata();
+		metadata.validate();
+		final SchemaExport schemaExport = new SchemaExport( metadata )
+				.setHaltOnError( true )
+				.setOutputFile( output.getAbsolutePath() )
+				.setFormat( false );
+		schemaExport.create( true, false );
+
+		final List<String> sqlLines = Files.readAllLines( output.toPath(), Charset.defaultCharset() );
+
+		boolean isUniqueConstraintCreated = false;
+		for ( String statement : sqlLines ) {
+			assertThat(
+					"Should not try to create the unique constraint for the non existing table element",
+					statement.toLowerCase().contains( "alter table element" ),
+					is( false )
+			);
+			if ( statement.toLowerCase().startsWith( "alter table category add constraint" )
+					&& statement.toLowerCase().contains( "unique (code)" ) ) {
+				isUniqueConstraintCreated = true;
+
+			}
+		}
+
+		assertThat(
+				"Unique constraint for table category is not created",
+				isUniqueConstraintCreated,
+				is( true )
+		);
+	}
+}