public async Task FriendshipCombinationExistsQueryHandler_ShouldReturnFalse_WhenCombinationDoesNotExist()
{
// Arrange
FriendshipCombinationExistsQuery request = new FriendshipCombinationExistsQuery
{
RequesterId = 8761,
AddresseeId = 242
};
_unitOfWorkMock
.Setup(m => m.Friendships.CombinationExists(request.RequesterId, request.AddresseeId, It.IsAny <CancellationToken>()))
.ReturnsAsync(false);
FriendshipCombinationExistsQuery.Handler handler = new FriendshipCombinationExistsQuery.Handler(_unitOfWorkMock.Object);
// Act
bool combinationExists = await handler.Handle(request);
// Assert
Assert.False(combinationExists);
}
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));
}
