fixed spec and SQL query

lib/gitlab/cycle_analytics/events_fetcher.rb

@@ -9,26 +9,28 @@ module Gitlab
       end
 
       def fetch_issues
-        cte_table = Arel::Table.new("cte_table_for_issue")
-
-        # Build a `SELECT` query. We find the first of the `end_time_attrs` that isn't `NULL` (call this end_time).
-        # Next, we find the first of the start_time_attrs that isn't `NULL` (call this start_time).
-        # We compute the (end_time - start_time) interval, and give it an alias based on the current
-        # cycle analytics stage.
-
         base_query = base_query_for(:issue)
-
         diff_fn = subtract_datetimes_diff(base_query, issue_table[:created_at], metric_attributes)
 
-        query = base_query.project(diff_fn.as('issue_diff'))
+        query = base_query.join(user_table).on(issue_table[:author_id].eq(user_table[:id])).
+          project(diff_fn.as('issue_diff'), *issue_projections).
+          order(issue_table[:created_at].desc)
 
-        ActiveRecord::Base.connection.execute(query.to_sql)
+        ActiveRecord::Base.connection.execute(query.to_sql).first
       end
 
       def metric_attributes
         [issue_metrics_table[:first_associated_with_milestone_at],
          issue_metrics_table[:first_added_to_board_at]]
       end
+
+      def issue_projections
+        [issue_table[:title], issue_table[:iid], issue_table[:created_at], User.arel_table[:name]]
+      end
+
+      def user_table
+        User.arel_table
+      end
     end
   end
 end

spec/lib/gitlab/cycle_analytics/events_spec.rb

@@ -14,8 +14,24 @@ describe Gitlab::CycleAnalytics::Events do
   describe '#issue' do
     let!(:context) { create(:issue, project: project) }
 
-    xit 'does something' do
-      expect(subject.issue_events).to eq([context])
+    it 'has an issue diff' do
+      expect(subject.issue_events['issue_diff']).to eq("-00:00:00.339259")
+    end
+
+    it 'has a title' do
+      expect(subject.issue_events['title']).to eq(context.title)
+    end
+
+    it 'has an iid' do
+      expect(subject.issue_events['iid']).to eq(context.iid)
+    end
+
+    it 'has a created_at timestamp' do
+      expect(subject.issue_events['created_at']).to eq(context.created_at)
+    end
+
+    it "has the author's name" do
+      expect(subject.issue_events['name']).to eq(context.author.name)
     end
   end