public void testWeCanParseNegativeIntegers() throws FileNotFoundException, IOException {
Copybook copybook = CopybookParser.parse("TYPES", new FileInputStream(new File("./src/test/resources/types.copybook")));
List<Record> records = copybook.parseData(new FileInputStream(new File("./src/test/resources/types.txt")));
Record record = records.get(0);
GroupData integers = (GroupData) record.getChild("TYPES").getChildren().get(1);
// todo assertEquals(BigInteger.valueOf(-1), integers.getChild("MINUSONE").getValue());
// todo assertEquals(BigInteger.valueOf(-65), integers.getChild("MINUSSIXTYFIVE").getValue());
// todo assertEquals(BigInteger.valueOf(-82), integers.getChild("EIGHTYTWO").getValue());
}