    @Test
    public void getFields() throws Exception {

        final String[] expectedFields = {"id", "label"};

        final ClassFields classFields = new ClassFieldsExcelExport(
                new ClassFieldsDefault(TestClass.class)
        );
        final Iterator<Field> fields = classFields.getFields();

        final List<String> actualFields = new ArrayList<>();
        while (fields.hasNext()) {
            final Field f = fields.next();
            actualFields.add(f.getName());
        }

        Assert.assertArrayEquals("Check declared @ExcelExport fields", expectedFields, actualFields.toArray());
    }