属性持ちの引数なしインスタンスメソッドを探して呼び出すテスト

attr.cs

public static void InvokeAttributedMethod<TInstance, TAttribute>(TInstance instance) where TInstance : class where TAttribute : Attribute
{
    foreach (var method in typeof(TInstance).GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod))
    {
        var attr = Attribute.GetCustomAttribute(method, typeof(TAttribute));
        if (attr == null)
            continue;

        if (method.GetParameters().Length > 0)
            continue;

        method.Invoke(instance, null);

    }
}

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]