[#1639] Test ConstraintViolationException SQLState code

hibernate-reactive-core/src/test/java/org/hibernate/reactive/MutinyExceptionsTest.java

@@ -21,8 +21,8 @@
 import jakarta.persistence.Table;
 
 import static java.util.concurrent.TimeUnit.MINUTES;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.fail;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.hibernate.reactive.testing.ReactiveAssertions.assertThrown;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
@@ -33,25 +33,22 @@ protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Person.class );
 	}
 
-	Class<?> getExpectedException() {
-		return ConstraintViolationException.class;
-	}
-
 	@Test
 	public void testDuplicateKeyException(VertxTestContext context) {
-		test( context, openMutinySession()
+		test( context, assertThrown( ConstraintViolationException.class, openMutinySession()
 				.call( session -> session.persist( new Person( "testFLush1", "unique" ) ) )
 				.call( Mutiny.Session::flush )
 				.call( session -> session.persist( new Person( "testFlush2", "unique" ) ) )
-				.call( Mutiny.Session::flush )
-				.invoke( ignore -> fail( "Expected exception not thrown" ) )
-				.onFailure().recoverWithItem( err -> {
-					assertEquals( getExpectedException(), err.getClass() );
-					return null;
-				} )
+				.call( Mutiny.Session::flush ) )
+				.invoke( MutinyExceptionsTest::testExceptionMessage )
 		);
 	}
 
+	private static void testExceptionMessage(ConstraintViolationException exception) {
+		assertThat( exception.getConstraintName() ).isNotNull();
+		assertThat( exception.getSQLState() ).matches( "23\\d{3}" );
+	}
+
 	@Entity(name = "Person")
 	@Table(name = "PersonForExceptionWithMutiny")
 	public static class Person {