HHH-18296 Test that we don't log warnings when "DROP IF EXISTS" is executed on postgres

hibernate-core/src/test/java/org/hibernate/orm/test/jpa/schemagen/SchemaCreateDropExtraWarningsTest.java

@@ -0,0 +1,51 @@
+/*
+ * 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.jpa.schemagen;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.dialect.PostgreSQLDialect;
+import org.hibernate.engine.jdbc.spi.SqlExceptionHelper;
+
+import org.hibernate.testing.orm.junit.EntityManagerFactoryBasedFunctionalTest;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.Logger;
+import org.hibernate.testing.orm.junit.MessageKeyInspection;
+import org.hibernate.testing.orm.junit.MessageKeyWatcher;
+import org.hibernate.testing.orm.junit.RequiresDialect;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.EntityManagerFactory;
+
+@JiraKey("HHH-18296")
+@MessageKeyInspection(messageKey = "SQL Warning", logger = @Logger(loggerNameClass = SqlExceptionHelper.class))
+@RequiresDialect(value = PostgreSQLDialect.class, comment = "Only the PostgreSQL driver is known to generate 'success' warnings on table drop")
+public class SchemaCreateDropExtraWarningsTest extends EntityManagerFactoryBasedFunctionalTest {
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] { Document.class };
+	}
+
+	@Test
+	public void testNoWarning(MessageKeyWatcher watcher) {
+		// Create the emf in test, so that we can capture logs
+		try ( EntityManagerFactory emf = produceEntityManagerFactory() ) {
+			// No warnings on startup
+			assertThat( watcher.getTriggeredMessages() )
+					.isEmpty();
+
+			emf.unwrap( SessionFactory.class )
+					.getSchemaManager()
+					.dropMappedObjects( false );
+			// No warnings on explicit drop
+			assertThat( watcher.getTriggeredMessages() )
+					.isEmpty();
+		}
+	}
+}