added custom date helper and spec and fixed some unrelated spec failures

app/serializers/analytics_build_entity.rb

@@ -13,7 +13,7 @@ class AnalyticsBuildEntity < Grape::Entity
   end
 
   expose :duration, as: :total_time do |build|
-    distance_of_time_in_words(build[:duration].to_f)
+    distance_of_time_as_hash(build[:duration].to_f)
   end
 
   expose :branch do

app/serializers/analytics_commit_entity.rb

@@ -5,7 +5,7 @@ class AnalyticsCommitEntity < CommitEntity
   expose :short_id, as: :short_sha
 
   expose :total_time do |commit|
-    distance_of_time_in_words(request.total_time.to_f)
+    distance_of_time_as_hash(request.total_time.to_f)
   end
 
   unexpose :author_name

app/serializers/analytics_generic_entity.rb

@@ -3,12 +3,15 @@ class AnalyticsGenericEntity < Grape::Entity
   include EntityDateHelper
 
   expose :title
-  expose :iid
   expose :state, if: ->(_instance, options) { options[:request].entity == :merge_request }
   expose :author, using: UserEntity
 
+  expose :iid do |object|
+    object[:iid].to_s
+  end
+
   expose :total_time do |object|
-    distance_of_time_in_words(object[:total_time].to_f)
+    distance_of_time_as_hash(object[:total_time].to_f)
   end
 
   expose(:created_at) do |object|

app/serializers/entity_date_helper.rb

@@ -4,4 +4,32 @@ module EntityDateHelper
   def interval_in_words(diff)
     "#{distance_of_time_in_words(diff.to_f)} ago"
   end
+
+  # Converts seconds into a hash such as:
+  # { days: 1, hours: 3, mins: 42, seconds: 40 }
+  #
+  # It returns 0 seconds for zero or negative numbers
+  # It rounds to nearest time unit and does not return zero
+  # i.e { min: 1 } instead of { mins: 1, seconds: 0 }
+  def distance_of_time_as_hash(diff)
+    diff = diff.abs.floor
+
+    return { seconds: 0 } if diff == 0
+
+    mins = (diff / 60).floor
+    seconds = diff % 60
+    hours = (mins / 60).floor
+    mins = mins % 60
+    days = (hours / 24).floor
+    hours = hours % 24
+
+    duration_hash = {}
+
+    duration_hash[:days] = days if days > 0
+    duration_hash[:hours] = hours if hours > 0
+    duration_hash[:mins] = mins if mins > 0
+    duration_hash[:seconds] = seconds if seconds > 0
+
+    duration_hash
+  end
 end

spec/lib/gitlab/cycle_analytics/events_spec.rb

@@ -16,7 +16,7 @@ describe Gitlab::CycleAnalytics::Events do
 
   describe '#issue_events' do
     it 'has the total time' do
-      expect(subject.issue_events.first[:total_time]).to eq('2 days')
+      expect(subject.issue_events.first[:total_time]).not_to be_empty
     end
 
     it 'has a title' do
@@ -62,7 +62,7 @@ describe Gitlab::CycleAnalytics::Events do
     end
 
     it 'has the total time' do
-      expect(subject.plan_events.first[:total_time]).to eq('less than a minute')
+      expect(subject.plan_events.first[:total_time]).not_to be_empty
     end
 
     it "has the author's URL" do
@@ -84,7 +84,7 @@ describe Gitlab::CycleAnalytics::Events do
     end
 
     it 'has the total time' do
-      expect(subject.code_events.first[:total_time]).to eq('less than a minute')
+      expect(subject.code_events.first[:total_time]).not_to be_empty
     end
 
     it 'has a title' do
@@ -162,7 +162,7 @@ describe Gitlab::CycleAnalytics::Events do
     end
 
     it 'has the total time' do
-      expect(subject.test_events.first[:total_time]).not_to be_nil
+      expect(subject.test_events.first[:total_time]).not_to be_empty
     end
   end
 
@@ -170,7 +170,7 @@ describe Gitlab::CycleAnalytics::Events do
     let!(:context) { create(:issue, project: project, created_at: 2.days.ago) }
 
     it 'has the total time' do
-      expect(subject.review_events.first[:total_time]).to eq('less than a minute')
+      expect(subject.review_events.first[:total_time]).not_to be_empty
     end
 
     it 'has a title' do
@@ -259,7 +259,7 @@ describe Gitlab::CycleAnalytics::Events do
     end
 
     it 'has the total time' do
-      expect(subject.staging_events.first[:total_time]).not_to be_nil
+      expect(subject.staging_events.first[:total_time]).not_to be_empty
     end
 
     it "has the author's URL" do
@@ -284,7 +284,7 @@ describe Gitlab::CycleAnalytics::Events do
     end
 
     it 'has the total time' do
-      expect(subject.production_events.first[:total_time]).to eq('2 days')
+      expect(subject.production_events.first[:total_time]).not_to be_empty
     end
 
     it 'has a title' do

spec/requests/projects/cycle_analytics_events_spec.rb

@@ -3,17 +3,18 @@ require 'spec_helper'
 describe 'cycle analytics events' do
   let(:user) { create(:user) }
   let(:project) { create(:project) }
+  let(:issue) {  create(:issue, project: project, created_at: 2.days.ago) }
 
   describe 'GET /:namespace/:project/cycle_analytics/events/issues' do
     before do
       project.team << [user, :developer]
 
+      allow_any_instance_of(Gitlab::ReferenceExtractor).to receive(:issues).and_return([issue])
+
       3.times { create_cycle }
       deploy_master
 
       login_as(user)
-
-      allow_any_instance_of(Gitlab::ReferenceExtractor).to receive(:issues).and_return([context])
     end
 
     it 'lists the issue events' do
@@ -31,17 +32,7 @@ describe 'cycle analytics events' do
 
       expect(json_response['events']).not_to be_empty
 
-      commits = []
-
-      MergeRequest.all.each do |mr|
-        mr.merge_request_diff.st_commits.each do |commit|
-          commits << { date: commit[:authored_date], sha: commit[:id] }
-        end
-      end
-
-      newest_sha = commits.sort_by { |k| k['date'] }.first[:sha][0...8]
-
-      expect(json_response['events'].first['short_sha']).to eq(newest_sha)
+      expect(json_response['events'].first['short_sha']).to eq(MergeRequest.last.commits.first.short_id)
     end
 
     it 'lists the code events' do
@@ -49,7 +40,7 @@ describe 'cycle analytics events' do
 
       expect(json_response['events']).not_to be_empty
 
-      first_mr_iid = Issue.order(created_at: :desc).pluck(:iid).first.to_s
+      first_mr_iid = MergeRequest.order(created_at: :desc).pluck(:iid).first.to_s
 
       expect(json_response['events'].first['iid']).to eq(first_mr_iid)
     end
@@ -67,7 +58,7 @@ describe 'cycle analytics events' do
 
       expect(json_response['events']).not_to be_empty
 
-      first_mr_iid = Issue.order(created_at: :desc).pluck(:iid).first.to_s
+      first_mr_iid = MergeRequest.order(created_at: :desc).pluck(:iid).first.to_s
 
       expect(json_response['events'].first['iid']).to eq(first_mr_iid)
     end
@@ -132,7 +123,6 @@ describe 'cycle analytics events' do
   end
 
   def create_cycle
-    issue = create(:issue, project: project, created_at: 2.days.ago)
     milestone = create(:milestone, project: project)
     issue.update(milestone: milestone)
     mr = create_merge_request_closing_issue(issue)

spec/serializers/entity_date_helper_spec.rb

@@ -0,0 +1,45 @@
+require 'spec_helper'
+
+describe EntityDateHelper do
+  let(:date_helper_class) { Class.new { include EntityDateHelper }.new }
+
+  it 'converts 0 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(0)).to eq(seconds: 0)
+  end
+
+  it 'converts 40 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(40)).to eq(seconds: 40)
+  end
+
+  it 'converts 60 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(60)).to eq(mins: 1)
+  end
+
+  it 'converts 70 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(70)).to eq(mins: 1, seconds: 10)
+  end
+
+  it 'converts 3600 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(3600)).to eq(hours: 1)
+  end
+
+  it 'converts 3750 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(3750)).to eq(hours: 1, mins: 2, seconds: 30)
+  end
+
+  it 'converts 86400 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(86400)).to eq(days: 1)
+  end
+
+  it 'converts 86560 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(86560)).to eq(days: 1, mins: 2, seconds: 40)
+  end
+
+  it 'converts 86760 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(99760)).to eq(days: 1, hours: 3, mins: 42, seconds: 40)
+  end
+
+  it 'converts 986760 seconds' do
+    expect(date_helper_class.distance_of_time_as_hash(986760)).to eq(days: 11, hours: 10, mins: 6)
+  end
+end