Epics API Tests to test Milestone Dates Integration Scenario

qa/qa/specs/features/api/2_plan/ee_epics_milestone_dates_spec.rb

+# frozen_string_literal: true
+
+module QA
+  context :plan do
+    describe 'Epics milestone dates API' do
+      before(:context) do
+        @api_client = Runtime::API::Client.new(:gitlab)
+        @group_id = create_group
+        @project_id = create_project
+        @milestone_start_date = (Date.today.to_date + 100).strftime("%Y-%m-%d")
+        @milestone_due_date = (Date.today.to_date + 120).strftime("%Y-%m-%d")
+        @fixed_start_date = Date.today.to_date.strftime("%Y-%m-%d")
+        @fixed_due_date = (Date.today.to_date + 90).strftime("%Y-%m-%d")
+      end
+
+      def create_epic_issue_milestone
+        epic_iid = create_epic
+        milestone_id = create_milestone(@milestone_start_date, @milestone_due_date)
+        issue_id = create_issue(milestone_id)
+        add_issue_to_epic(epic_iid, issue_id)
+        use_epics_milestone_dates(epic_iid)
+        [epic_iid, milestone_id]
+      end
+
+      def create_request(api_endpoint)
+        Runtime::API::Request.new(@api_client, api_endpoint)
+      end
+
+      def create_group
+        group_name = "group_#{SecureRandom.hex(8)}"
+        create_group_request = create_request("/groups")
+        post create_group_request.url, name: group_name, path: group_name
+        expect_status(201)
+        json_body[:id]
+      end
+
+      def create_project
+        project_name = "project_#{SecureRandom.hex(8)}"
+        create_project_request = create_request('/projects')
+        post create_project_request.url, path: project_name, name: project_name, namespace_id: @group_id
+        expect_status(201)
+        json_body[:id]
+      end
+
+      def create_issue(milestone_id)
+        request = create_request("/projects/#{@project_id}/issues")
+        post request.url, title: 'My Test Issue', milestone_id: milestone_id
+        expect_status(201)
+        json_body[:id]
+      end
+
+      def create_milestone(start_date, due_date)
+        request = create_request("/projects/#{@project_id}/milestones")
+        post request.url, title: "Test_Milestone_#{SecureRandom.hex(8)}", due_date: due_date, start_date: start_date
+        expect_status(201)
+        json_body[:id]
+      end
+
+      def create_epic
+        request = create_request("/groups/#{@group_id}/epics")
+        post request.url, title: 'My New Epic', due_date_fixed: @fixed_due_date, start_date_fixed: @fixed_start_date, start_date_is_fixed: true, due_date_is_fixed: true
+        expect_status(201)
+        json_body[:iid]
+      end
+
+      def add_issue_to_epic(epic_iid, issue_id)
+        # Add Issue with milestone to an epic
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}/issues/#{issue_id}")
+        post request.url
+
+        expect_status(201)
+        expect_json('epic.title', 'My New Epic*')
+        expect_json('issue.title', 'My Test Issue')
+      end
+
+      def use_epics_milestone_dates(epic_iid)
+        # Update Epic to use Milestone Dates
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}")
+        put request.url, start_date_is_fixed: false, due_date_is_fixed: false
+
+        expect_status(200)
+        expect_json('start_date_from_milestones', @milestone_start_date)
+        expect_json('due_date_from_milestones', @milestone_due_date)
+        expect_json('due_date_fixed', @fixed_due_date)
+        expect_json('start_date_fixed', @fixed_start_date)
+        expect_json('start_date', @milestone_start_date)
+        expect_json('due_date', @milestone_due_date)
+      end
+
+      it 'Updating milestones changes epic dates' do
+        epic_iid, milestone_id = create_epic_issue_milestone
+        milestone_start_date = Date.today.to_date.strftime("%Y-%m-%d")
+        milestone_due_date = (Date.today.to_date + 30).strftime("%Y-%m-%d")
+
+        # Update Milestone to different dates and see it reflecting in the epics
+        request = create_request("/projects/#{@project_id}/milestones/#{milestone_id}")
+        put request.url, start_date: milestone_start_date, due_date: milestone_due_date
+        expect_status(200)
+
+        # Get Epic Details
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}")
+        get request.url
+        expect_status(200)
+
+        expect_json('start_date_from_milestones', milestone_start_date)
+        expect_json('due_date_from_milestones', milestone_due_date)
+        expect_json('start_date', milestone_start_date)
+        expect_json('due_date', milestone_due_date)
+      end
+
+      it 'Adding another issue updates epic dates' do
+        epic_iid = create_epic_issue_milestone[0]
+        milestone_start_date = Date.today.to_date.strftime("%Y-%m-%d")
+        milestone_due_date = (Date.today.to_date + 150).strftime("%Y-%m-%d")
+
+        # Add another Issue and milestone
+        second_milestone_id = create_milestone(milestone_start_date, milestone_due_date)
+        second_issue_id = create_issue(second_milestone_id)
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}/issues/#{second_issue_id}")
+        post request.url
+        expect_status(201)
+
+        # and check milestone dates
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}")
+        get request.url
+        expect_status(200)
+
+        expect_json('start_date_from_milestones', milestone_start_date)
+        expect_json('due_date_from_milestones', milestone_due_date)
+        expect_json('start_date', milestone_start_date)
+        expect_json('due_date', milestone_due_date)
+      end
+
+      it 'Removing issue updates epic dates' do
+        epic_iid = create_epic_issue_milestone[0]
+
+        # Get epic_issue_id
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}/issues")
+        get request.url
+        expect_status(200)
+        epic_issue_id = json_body[0][:epic_issue_id]
+
+        # Remove Issue
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}/issues/#{epic_issue_id}")
+        delete request.url
+        expect_status(200)
+
+        # and check milestone dates
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}")
+        get request.url
+        expect_status(200)
+
+        expect_json('start_date_from_milestones', nil)
+        expect_json('due_date_from_milestones', nil)
+        expect_json('start_date', nil)
+        expect_json('due_date', nil)
+      end
+
+      it 'Deleting milestones updates epic dates' do
+        epic_iid, milestone_id = create_epic_issue_milestone
+
+        # Delete Milestone
+        request = create_request("/projects/#{@project_id}/milestones/#{milestone_id}")
+        delete request.url
+        expect_status(204)
+
+        # and check milestone dates
+        request = create_request("/groups/#{@group_id}/epics/#{epic_iid}")
+        get request.url
+        expect_status(200)
+
+        expect_json('start_date_from_milestones', nil)
+        expect_json('due_date_from_milestones', nil)
+        expect_json('start_date', nil)
+        expect_json('due_date', nil)
+      end
+    end
+  end
+end