FEATURE: Allow Markdown in post notices. (#7864)

spec/requests/posts_controller_spec.rb

@@ -1789,4 +1789,27 @@ describe PostsController do
       expect(public_post).not_to be_locked
     end
   end
+
+  describe "#notice" do
+    before do
+      sign_in(moderator)
+    end
+
+    it 'can create and remove notices' do
+      put "/posts/#{public_post.id}/notice.json", params: { notice: "Hello *world*!\n\nhttps://github.com/discourse/discourse" }
+
+      expect(response.status).to eq(200)
+      public_post.reload
+      expect(public_post.custom_fields['notice_type']).to eq(Post.notices[:custom])
+      expect(public_post.custom_fields['notice_args']).to include('<p>Hello <em>world</em>!</p>')
+      expect(public_post.custom_fields['notice_args']).not_to include('onebox')
+
+      put "/posts/#{public_post.id}/notice.json", params: { notice: nil }
+
+      expect(response.status).to eq(200)
+      public_post.reload
+      expect(public_post.custom_fields['notice_type']).to eq(nil)
+      expect(public_post.custom_fields['notice_args']).to eq(nil)
+    end
+  end
 end