    @Test
    public void testConvertNullTarget() throws Exception {

        when(reflectionHelper.newInstance(SimpleClassDomain.class)).thenReturn(null);

        JTransfoException exc = Assertions.assertThrows(JTransfoException.class, () ->
                jTransfo.convert(new SimpleClassNameTo()));

        assertThat(exc.getMessage()).startsWith("Cannot create instance of target class org.jtransfo.object.SimpleClassDomain " +
                "for source object org.jtransfo.object.SimpleClassNameTo");
    }