Add DORA 4 lead time API frontend fixture

This commit adds 3 new frontend fixtures that represent the return
values of the DORA 4 lead time API.

ee/spec/frontend/fixtures/dora/metrics.rb

@@ -9,16 +9,21 @@ RSpec.describe 'DORA Metrics (JavaScript fixtures)' do
   let_it_be(:project) { create(:project, :repository) }
   let_it_be(:reporter) { create(:user).tap { |u| project.add_reporter(u) } }
   let_it_be(:environment) { create(:environment, project: project, name: 'production') }
+  let_it_be(:seconds_in_1_day) { 60 * 60 * 24 }
 
   before_all do
     [
-      { date: '2015-06-01', value: 1 },
-      { date: '2015-06-25', value: 1 },
-      { date: '2015-06-30', value: 3 },
-      { date: '2015-07-01', value: 1 },
-      { date: '2015-07-03', value: 1 }
+      { date: '2015-06-01', deployment_frequency: 1, lead_time_for_changes_in_seconds: nil },
+      { date: '2015-06-25', deployment_frequency: 1, lead_time_for_changes_in_seconds: nil },
+      { date: '2015-06-30', deployment_frequency: 3, lead_time_for_changes_in_seconds: seconds_in_1_day },
+      { date: '2015-07-01', deployment_frequency: 1, lead_time_for_changes_in_seconds: seconds_in_1_day * 5 },
+      { date: '2015-07-03', deployment_frequency: 1, lead_time_for_changes_in_seconds: seconds_in_1_day * 7 }
     ].each do |data_point|
-      create(:dora_daily_metrics, deployment_frequency: data_point[:value], environment: environment, date: data_point[:date])
+      create(:dora_daily_metrics,
+             deployment_frequency: data_point[:deployment_frequency],
+             lead_time_for_changes_in_seconds: data_point[:lead_time_for_changes_in_seconds],
+             environment: environment,
+             date: data_point[:date])
     end
   end
 
@@ -32,38 +37,45 @@ RSpec.describe 'DORA Metrics (JavaScript fixtures)' do
   end
 
   describe API::Dora::Metrics, type: :request do
+    let(:shared_params) do
+      {
+        end_date: Date.tomorrow.beginning_of_day,
+        interval: 'daily'
+      }
+    end
+
     before(:all) do
       clean_frontend_fixtures('api/dora/metrics')
     end
 
-    describe 'deployment frequency' do
-      let(:shared_params) do
-        {
-          metric: 'deployment_frequency',
-          end_date: Date.tomorrow.beginning_of_day,
-          interval: 'daily'
-        }
-      end
-
-      def make_request(additional_query_params:)
-        params = shared_params.merge(additional_query_params)
-        get api("/projects/#{project.id}/dora/metrics?#{params.to_query}", reporter)
-      end
+    def make_request(additional_query_params:)
+      params = shared_params.merge(additional_query_params)
+      get api("/projects/#{project.id}/dora/metrics?#{params.to_query}", reporter)
+    end
 
-      it 'api/dora/metrics/daily_deployment_frequencies_for_last_week.json' do
-        make_request(additional_query_params: { start_date: 1.week.ago })
+    shared_examples 'dora metric fixtures' do |metric_name|
+      it "api/dora/metrics/daily_#{metric_name}_for_last_week.json" do
+        make_request(additional_query_params: { metric: metric_name, start_date: 1.week.ago })
         expect(response).to be_successful
       end
 
-      it 'api/dora/metrics/daily_deployment_frequencies_for_last_month.json' do
-        make_request(additional_query_params: { start_date: 1.month.ago })
+      it "api/dora/metrics/daily_#{metric_name}_for_last_month.json" do
+        make_request(additional_query_params: { metric: metric_name, start_date: 1.month.ago })
         expect(response).to be_successful
       end
 
-      it 'api/dora/metrics/daily_deployment_frequencies_for_last_90_days.json' do
-        make_request(additional_query_params: { start_date: 90.days.ago })
+      it "api/dora/metrics/daily_#{metric_name}_for_last_90_days.json" do
+        make_request(additional_query_params: { metric: metric_name, start_date: 90.days.ago })
         expect(response).to be_successful
       end
     end
+
+    describe 'deployment frequency' do
+      it_behaves_like 'dora metric fixtures', 'deployment_frequency'
+    end
+
+    describe 'lead time' do
+      it_behaves_like 'dora metric fixtures', 'lead_time_for_changes'
+    end
   end
 end

ee/spec/frontend/projects/pipelines/charts/components/deployment_frequency_charts_spec.js

@@ -11,13 +11,13 @@ import CiCdAnalyticsCharts from '~/projects/pipelines/charts/components/ci_cd_an
 jest.mock('~/flash');
 
 const lastWeekData = getJSONFixture(
-  'api/dora/metrics/daily_deployment_frequencies_for_last_week.json',
+  'api/dora/metrics/daily_deployment_frequency_for_last_week.json',
 );
 const lastMonthData = getJSONFixture(
-  'api/dora/metrics/daily_deployment_frequencies_for_last_month.json',
+  'api/dora/metrics/daily_deployment_frequency_for_last_month.json',
 );
 const last90DaysData = getJSONFixture(
-  'api/dora/metrics/daily_deployment_frequencies_for_last_90_days.json',
+  'api/dora/metrics/daily_deployment_frequency_for_last_90_days.json',
 );
 
 describe('ee_component/projects/pipelines/charts/components/deployment_frequency_charts.vue', () => {