FEATURE: add full editing access to queued posts (#5047)

For pending new topics: the body of the post, title, categories
and the tags are editable.

For pending new replies: only the body is applicable and thus
editable

DISCUSSION: https://meta.discourse.org/t/66754

spec/controllers/queued_posts_controller_spec.rb

@@ -27,7 +27,7 @@ describe QueuedPostsController do
     end
   end
 
-  context 'update' do
+  describe '#update' do
     let!(:user) { log_in(:moderator) }
     let(:qp) { Fabricate(:queued_post) }
 
@@ -43,7 +43,7 @@ describe QueuedPostsController do
     end
 
     context 'rejected' do
-      it 'updates the post to approved' do
+      it 'updates the post to rejected' do
 
         xhr :put, :update, id: qp.id, queued_post: { state: 'rejected' }
         expect(response).to be_success
@@ -53,5 +53,66 @@ describe QueuedPostsController do
       end
     end
 
+    context 'editing content' do
+      let(:changes) do
+        {
+          raw: 'new raw',
+          title: 'new title',
+          category_id: 10,
+          tags: ['new_tag']
+        }
+      end
+
+      context 'when it is a topic' do
+        let(:queued_topic) { Fabricate(:queued_topic) }
+
+        before do
+          xhr :put, :update, id: queued_topic.id, queued_post: changes
+          expect(response).to be_success
+        end
+
+        it 'updates raw' do
+          expect(queued_topic.reload.raw).to eq(changes[:raw])
+        end
+
+        it 'updates the title' do
+          expect(queued_topic.reload.post_options['title']).to eq(changes[:title])
+        end
+
+        it 'updates the category' do
+          expect(queued_topic.reload.post_options['category']).to eq(changes[:category_id])
+        end
+
+        it 'updates the tags' do
+          expect(queued_topic.reload.post_options['tags']).to eq(changes[:tags])
+        end
+      end
+
+      context 'when it is a reply' do
+        let(:queued_reply) { Fabricate(:queued_post) }
+
+        before do
+          xhr :put, :update, id: queued_reply.id, queued_post: changes
+          expect(response).to be_success
+        end
+
+        it 'updates raw' do
+          expect(queued_reply.reload.raw).to eq(changes[:raw])
+        end
+
+        it 'does not update the title' do
+          expect(queued_reply.reload.post_options['title']).to be_nil
+        end
+
+        it 'does not update the category' do
+          original_category = queued_reply.post_options['category']
+          expect(queued_reply.reload.post_options['category']).to eq(original_category)
+        end
+
+        it 'does not update the tags' do
+          expect(queued_reply.reload.post_options['tags']).to be_nil
+        end
+      end
+    end
   end
 end