public async Task Handler_GivenInvalidPostId_ReturnsEmptyCommentsDTOCollection()
{
// Arrange
var query = new GetCommentsByPostIdQuery {
PostId = 99
};
// Act
var handler = new GetCommentsByPostIdQuery.GetCommentsByPostIdQueryHandler(Context, Mapper);
var result = await handler.Handle(query, CancellationToken.None);
// Assert
result.ShouldBeEmpty();
}
public async Task Handler_GivenValidPostId_ReturnsNotEmptyCommentsDTOCollection()
{
// Arrange
var query = new GetCommentsByPostIdQuery {
PostId = 1
};
// Act
var handler = new GetCommentsByPostIdQuery.GetCommentsByPostIdQueryHandler(Context, Mapper);
var result = await handler.Handle(query, CancellationToken.None);
// Assert
result.ShouldBeOfType <List <CommentDTO> >();
result.ShouldNotBeNull();
}
public async Task <IActionResult> Read(int id)
{
if (id == default)
{
return(NotFound());
}
// Get post.
var postQuery = new GetPostQuery {
Id = id
};
var post = await _mediator.Send(postQuery);
// Add author information.
var authorQuery = new GetAuthorQuery {
Id = post.AuthorId
};
var author = await _mediator.Send(authorQuery);
post.Author = author.FirstName + " " + author.LastName;
// Add topic information.
var topicQuery = new GetTopicQuery {
Id = post.TopicId
};
var topic = await _mediator.Send(topicQuery);
post.Topic = topic.Text;
// Get comments for current post.
var commentsQuery = new GetCommentsByPostIdQuery {
PostId = post.Id
};
var comments = await _mediator.Send(commentsQuery);
// Create post view model.
var model = _mapper.Map <PostDTO, PostViewModel>(post);
model.AuthorAvatar = author.Avatar;
// Check current user if he/she is an author of the current post.
var userName = HttpContext.User.Identity.Name;
if (userName == null)
{
model.CurrentReaderId = default;
}
else
{
var userId = await _identityService.GetUserIdByNameAsync(userName);
var reader = await _mediator.Send(new GetAuthorByUserIdQuery { UserId = userId });
if (reader == null)
{
model.CurrentReaderId = default;
}
else
{
model.CurrentReaderId = reader.Id;
}
}
// Check post comments
model.Comments = _mapper.Map <ICollection <CommentDTO>, ICollection <CommentViewModel> >(comments);
foreach (var comment in model.Comments)
{
var commentAuthorQuery = new GetAuthorQuery {
Id = comment.AuthorId
};
var commentAuthor = await _mediator.Send(commentAuthorQuery);
comment.Author = commentAuthor.FirstName + " " + commentAuthor.LastName;
(var age, var units) = comment.Date.Age();
comment.Age = age;
comment.AgeUnits = units;
comment.AuthorAvatar = commentAuthor.Avatar;
}
return(View(model));
}