FEATURE: move a topic from PM to regular topic or vice versa

spec/models/topic_converter_spec.rb

@@ -0,0 +1,68 @@
+require 'rails_helper'
+
+describe TopicConverter do
+
+  context 'convert_to_public_topic' do
+    let(:admin) { Fabricate(:admin) }
+    let(:author) { Fabricate(:user) }
+    let(:private_message) { Fabricate(:private_message_topic, user: author) }
+
+    context 'success' do
+      it "converts private message to regular topic" do
+        topic = private_message.convert_to_public_topic(admin)
+        expect(topic).to be_valid
+        expect(topic.archetype).to eq("regular")
+      end
+
+      it "updates user stats" do
+        topic_user = TopicUser.create!(user_id: author.id, topic_id: private_message.id, posted: true)
+        expect(private_message.user.user_stat.topic_count).to eq(0)
+        private_message.convert_to_public_topic(admin)
+        expect(private_message.reload.user.user_stat.topic_count).to eq(1)
+        expect(topic_user.reload.notification_level).to eq(TopicUser.notification_levels[:watching])
+      end
+    end
+  end
+
+  context 'convert_to_private_message' do
+    let(:admin) { Fabricate(:admin) }
+    let(:author) { Fabricate(:user) }
+    let(:topic) { Fabricate(:topic, user: author) }
+
+    context 'success' do
+      it "converts regular topic to private message" do
+        private_message = topic.convert_to_private_message(admin)
+        expect(private_message).to be_valid
+        expect(topic.archetype).to eq("private_message")
+      end
+
+      it "updates user stats" do
+        Fabricate(:post, topic: topic, user: author)
+        topic_user = TopicUser.create!(user_id: author.id, topic_id: topic.id, posted: true)
+        author.user_stat.topic_count = 1
+        author.user_stat.save
+        expect(topic.user.user_stat.topic_count).to eq(1)
+        topic.convert_to_private_message(admin)
+
+        expect(topic.reload.topic_allowed_users.where(user_id: author.id).count).to eq(1)
+        expect(topic.reload.user.user_stat.topic_count).to eq(0)
+        expect(topic_user.reload.notification_level).to eq(TopicUser.notification_levels[:watching])
+      end
+    end
+
+    context 'topic has replies' do
+      before do
+        @replied_user = Fabricate(:coding_horror)
+        create_post(topic: topic, user: @replied_user)
+        topic.reload
+      end
+
+      it 'adds users who replied to topic in Private Message' do
+        topic.convert_to_private_message(admin)
+
+        expect(topic.reload.topic_allowed_users.where(user_id: @replied_user.id).count).to eq(1)
+        expect(topic.reload.user.user_stat.post_count).to eq(0)
+      end
+    end
+  end
+end