public void TestForm(string input, int exprectedErrorCount, string failureMessage)
{
var result = new Result();
var SemanticAnalyzer = new SemanticAnalyzer(result);
var node = ASTFactory.BuildForm(input);
SemanticAnalyzer.AnalyzeForm(node);
Assert.AreEqual(exprectedErrorCount, result.Events.Count, failureMessage);
}
