fix: Doorkeeperイベントデータのキーをシンボルに統一

Statistics::Tasks::Doorkeeperで文字列キーでアクセスしていたが、
EventService::Providers::Doorkeeperがシンボルキーで返すように
変更されたため、統計集計でDoorkeeperイベントが作成されない問題を修正。

また、テストスタブの日付を動的に生成するように変更し、
期間に応じた正しいイベント数が作成されるように調整した。

Author: yasulab

lib/statistics/tasks/doorkeeper.rb

@@ -20,16 +20,16 @@ def run
           dojo.dojo_event_services.for(:doorkeeper).each do |dojo_event_service|
             events = @client.fetch_events(**@params.merge(group_id: dojo_event_service.group_id))
             (events || []).compact.each do |e|
-              next unless e['group'].to_s == dojo_event_service.group_id
+              next unless e[:group].to_s == dojo_event_service.group_id
 
               EventHistory.create!(dojo_id:          dojo.id,
                                    dojo_name:        dojo.name,
                                    service_name:     dojo_event_service.name,
                                    service_group_id: dojo_event_service.group_id,
-                                   event_id:     e['id'],
-                                   event_url:    e['public_url'],
-                                   participants: e['participants'],
-                                   evented_at:   Time.zone.parse(e['starts_at']))
+                                   event_id:     e[:id],
+                                   event_url:    e[:public_url],
+                                   participants: e[:participants],
+                                   evented_at:   Time.zone.parse(e[:starts_at]))
             end
           end
         end

spec/support/shared_contexts/statistics.rb

@@ -88,15 +88,15 @@
           event: {
             title: "CoderDojo title",
             id: 1234,
-            starts_at: "2017-05-28T01:00:00.000Z",
-            ends_at: "2017-05-28T04:00:00.000Z",
+            starts_at: (Time.zone.today.prev_month + 10.days).to_time.utc.iso8601,
+            ends_at: (Time.zone.today.prev_month + 10.days + 3.hours).to_time.utc.iso8601,
             venue_name: "奥多摩町",
             address: "奥多摩町",
             lat: "35.801763000000",
             long: "139.087656000000",
             ticket_limit: 30,
-            published_at: "2017-04-22T03:43:04.000Z",
-            updated_at: "2017-05-10T11:31:21.810Z",
+            published_at: (Time.zone.today.prev_month - 5.days).to_time.utc.iso8601,
+            updated_at: (Time.zone.today.prev_month - 1.day).to_time.utc.iso8601,
             group: 5555,
             banner: nil,
             description: "CoderDojo description",