test: add shouldSelectMapper test for PreparedStatement to verify entity mapping

Author: otaviojava

jnosql-mapping/jnosql-mapping-semistructured/src/test/java/org/eclipse/jnosql/mapping/semistructured/PreparedStatementTest.java

@@ -157,4 +157,23 @@ void shouldReturnSingleFieldsInResult() {
         Assertions.assertThat(fields).isNotEmpty().hasSize(1).contains(new Object[]{"Ada", 20});
     }
 
+    @Test
+    void shouldSelectMapper() {
+        var communicationPreparedStatement = Mockito.mock(org.eclipse.jnosql.communication.semistructured.CommunicationPreparedStatement.class);
+        var entity = CommunicationEntity.of("Person");
+        entity.add("name", "Ada");
+        entity.add("age", 20);
+        entity.add("_id", 20);
+
+        Mockito.when(communicationPreparedStatement.result()).thenReturn(Stream.of(entity));
+        MapperObserver mapperObserver = new MapperObserver(entitiesMetadata);
+        mapperObserver.fireEntity("Person");
+        mapperObserver.fireSelectField("Person", "name");
+        mapperObserver.fireSelectField("Person", "age");
+        var preparedStatement = new PreparedStatement(communicationPreparedStatement, converter, mapperObserver, entitiesMetadata);
+        preparedStatement.setSelectMapper(selectQuery -> selectQuery);
+        Stream<Object[]> fields = preparedStatement.result();
+        Assertions.assertThat(fields).isNotEmpty().hasSize(1).contains(new Object[]{"Ada", 20});
+    }
+
 }