public void TestExpression(Dictionary <string, object> context, string expression, object expectedResult)
{
var questions = new List <Questionnaires.RunTime.Question>();
foreach (var value in context)
{
questions.Add(ValueCreator.CreateQuestion(value.Key, (dynamic)value.Value));
}
var store = new QuestionStore(questions);
var astFactory = new ASTBuilder(new Result());
var AST = astFactory.BuildExpression(expression);
var evaluator = new Questionnaires.RunTime.ExpressionEvaluator(store);
var result = evaluator.Evaluate((IExpression)AST);
Value.ValueTester.Test((dynamic)result, expectedResult);
}