public void AccountService_Register_CanRegister_Success()
{
// Arrange
IMember existedMember = null;
UserToRegister user = GetUserToRegister();
_memberService.GetByEmail(user.Email).Returns(existedMember);
// Act
Result registrationResult = _accountService.Register(user);
// Assert
Assert.IsNotNull(registrationResult, Common.ShowResponseTypeMismatchMessage(typeof(Result)));
Assert.IsTrue(registrationResult.IsSuccess, Common.ShowNotSatisfiedExpectationMessage(true, "registrationResult.IsSuccess"));
_userRegistration.Received(1).Register(Arg.Is(RegistrationPredicate(user)));
}