public async Task RequestFriendshipCommandHandler_ShouldReturnCreatedFriendship()
{
// Arrange
RequestFriendshipCommand request = new RequestFriendshipCommand {
AddresseeId = 2
};
_unitOfWorkMock
.Setup(m => m.CommitAsync(It.IsAny <CancellationToken>()))
.ReturnsAsync(1);
_unitOfWorkMock
.Setup(m => m.Friendships.Add(It.IsAny <Friendship>(), It.IsAny <CancellationToken>()))
.Returns(Task.CompletedTask)
.Callback <Friendship, CancellationToken>((f, _) => f.FriendshipId = 1);
RequestFriendshipCommand.Handler handler = new RequestFriendshipCommand.Handler(_userProviderMock.Object, _unitOfWorkMock.Object, _dateProviderMock.Object, _mapperMock);
// Act
FriendshipResource friendship = await handler.Handle(request);
// Assert
Assert.NotNull(friendship);
Assert.NotEqual(0, friendship.FriendshipId);
Assert.Equal(1, friendship.RequesterId);
Assert.Equal(2, friendship.AddresseeId);
}
public async Task <ActionResult <FriendshipResource> > RequestFriendship([FromBody] RequestFriendshipBody body, CancellationToken cancellationToken = default)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
// Get the current user id
int requesterId = int.Parse(User.FindFirst(ClaimTypes.NameIdentifier).Value);
// Check if requester + addressee id are the same
if (requesterId == body.AddresseeId)
{
return(StatusCode(StatusCodes.Status403Forbidden, new ErrorResource
{
StatusCode = StatusCodes.Status403Forbidden,
Message = "You cannot create a friendship with yourself"
}));
}
// Check if the addressed user exists
UserExistsQuery existsQuery = new UserExistsQuery {
UserId = body.AddresseeId
};
bool userExists = await _mediator.Send(existsQuery, cancellationToken);
if (!userExists)
{
return(NotFound(new ErrorResource
{
StatusCode = StatusCodes.Status404NotFound,
Message = $"User with ID '{body.AddresseeId}' does not exist"
}));
}
// Check if there is already a friendship with the given user combination
FriendshipCombinationExistsQuery combinationExistsQuery = new FriendshipCombinationExistsQuery
{
RequesterId = requesterId,
AddresseeId = body.AddresseeId
};
bool combinationExists = await _mediator.Send(combinationExistsQuery, cancellationToken);
if (combinationExists)
{
return(StatusCode(StatusCodes.Status403Forbidden, new ErrorResource
{
StatusCode = StatusCodes.Status403Forbidden,
Message = $"There is already a friendship with user {body.AddresseeId}"
}));
}
// Create friendship
RequestFriendshipCommand command = _mapper.Map <RequestFriendshipBody, RequestFriendshipCommand>(body);
FriendshipResource friendship = await _mediator.Send(command, cancellationToken);
return(CreatedAtAction(nameof(GetFriendshipById), new { friendshipId = friendship.FriendshipId }, friendship));
}
