public void ParseTreeEnumeratorShouldEnumerateMultipleTrees()
        {
            var parseTester = new ParseTester(new SimpleExpressionGrammar());
            parseTester.RunParse("3+2*1+1");
            var internalForestNode = parseTester.ParseEngine.GetParseForestRootNode();
            var parseTreeEnumerable = new ParseTreeEnumerable(internalForestNode);

            var count = 0;
            foreach (var parseTree in parseTreeEnumerable)
            {
                count++;
            }
            Assert.AreEqual(4, count);
        }
 public void InitializeTest()
 {
     _parseTester = new ParseTester(_grammar);
 }