public void UserObject_PassingObject_ReturnsJsonUserString()
{
//arrange
User user = new User()
{
Id = 100, Username = "******", Password = "******"
};
//act
string json = JsonHelpers.ConvertToJson(user);
//assert
StringAssert.Contains(user.Id.ToString(CultureInfo.InvariantCulture), json);
StringAssert.Contains(user.Username, json);
StringAssert.Contains(user.Password, json);
}