public void EvalMethod_GetResult_return_result_of_method()
{
var model = new ModelWithMethod(null, "123");
var evaluator = new TemplateEvaluator(model);
var element = new MethodCallTemplateElement
{
MethodName = "GetText"
};
evaluator.EvalMethod(element);
Assert.AreEqual("123", evaluator.GetResult());
}
public void EvalMethod_throw_TemplateEvaluateException_if_method_does_not_exist()
{
var model = new Model(null);
var evaluator = new TemplateEvaluator(model);
var element = new MethodCallTemplateElement
{
MethodName = "SomeMethod"
};
var exception = Assert.Throws <TemplateEvaluateException>(() => evaluator.EvalMethod(element));
Assert.AreEqual("Method with name 'SomeMethod' does not exist in model.", exception.Message);
}
internal void EvalMethod(MethodCallTemplateElement element)
{
MethodInfo[] methods = _model.GetType().GetMethods();
string methodName = element.MethodName;
MethodInfo[] methodsWithSameName = methods.Where(info => info.Name == methodName).ToArray();
if (methodsWithSameName.Length < 1)
{
throw new TemplateEvaluateException($"Method with name '{methodName}' does not exist in model.");
}
MethodInfo method = methodsWithSameName.Single();
object invoke = method.Invoke(_model, new object[0]);
_result.Append(invoke);
}
