public void ParseSimpleRuleFileWithIsNotCondition()
{
Parser parser = new Parser(new StreamReader("SimpleRuleWithIsNotCondition.txt"));
Rule rule = parser.ParseRule();
Assert.IsNotNull(rule);
Assert.IsTrue(rule.Conditions.Contains(new IsNotFact("Temperature", 39)));
Assert.IsTrue(rule.Assertions.Contains(new IsFact("HasFever", true)));
Assert.IsNull(parser.ParseRule());
}