Fix broken tests affected by current license logic

With the new logic to find the current license some tests broke due to
using Timecop. The current code was not able to find a current license
because the usage of a past date was used for Timecop which was
before the license's start date. Therefore we set the license factory's
start date to 1970-01-01.

ee/spec/factories/licenses.rb

@@ -19,8 +19,8 @@ FactoryBot.define do
       plan { License::STARTER_PLAN }
     end
 
-    starts_at { Date.today - 1.month }
-    expires_at { Date.today + 11.months }
+    starts_at { Date.new(1970, 1, 1) }
+    expires_at { Date.current + 11.months }
     block_changes_at { expires_at + 2.weeks }
     notify_users_at  { expires_at }
     notify_admins_at { expires_at }

ee/spec/models/historical_data_spec.rb

@@ -102,7 +102,7 @@ describe HistoricalData do
     end
 
     context 'with data outside of the license period' do
-      let!(:license) { create(:license) }
+      let!(:license) { create(:license, starts_at: Date.current - 1.month) }
 
       context 'with stats before the license period' do
         before do

ee/spec/models/license_spec.rb

@@ -3,8 +3,8 @@
 require "spec_helper"
 
 describe License do
-  let(:gl_license)  { build(:gitlab_license) }
-  let(:license)     { build(:license, data: gl_license.export) }
+  let(:gl_license) { build(:gitlab_license) }
+  let(:license)    { build(:license, data: gl_license.export) }
 
   describe "Validation" do
     describe "Valid license" do
@@ -116,7 +116,7 @@ describe License do
         end
 
         context "after the license started" do
-          let(:date) { Date.today }
+          let(:date) { Date.current }
 
           it "is valid" do
             expect(license).to be_valid
@@ -249,7 +249,7 @@ describe License do
     describe 'downgrade' do
       context 'when more users were added in previous period' do
         before do
-          HistoricalData.create!(date: 6.months.ago, active_user_count: 15)
+          HistoricalData.create!(date: described_class.current.starts_at - 6.months, active_user_count: 15)
 
           set_restrictions(restricted_user_count: 5, previous_user_count: 10)
         end
@@ -778,12 +778,14 @@ describe License do
   end
 
   def set_restrictions(opts)
+    date = described_class.current.starts_at
+
     gl_license.restrictions = {
       active_user_count: opts[:restricted_user_count],
       previous_user_count: opts[:previous_user_count],
       trueup_quantity: opts[:trueup_quantity],
-      trueup_from: (Date.today - 1.year).to_s,
-      trueup_to: Date.today.to_s
+      trueup_from: (date - 1.year).to_s,
+      trueup_to: date.to_s
     }
   end
 

ee/spec/requests/api/license_spec.rb

@@ -32,7 +32,7 @@ describe API::License, api: true do
       get api('/license', admin)
       expect(response).to have_gitlab_http_status(:ok)
       expect(json_response['user_limit']).to eq 0
-      expect(Date.parse(json_response['starts_at'])).to eq Date.today - 1.month
+      expect(Date.parse(json_response['starts_at'])).to eq Date.new(1970, 1, 1)
       expect(Date.parse(json_response['expires_at'])).to eq Date.today + 11.months
       expect(json_response['active_users']).to eq 1
       expect(json_response['licensee']).not_to be_empty
@@ -51,7 +51,7 @@ describe API::License, api: true do
 
       expect(response).to have_gitlab_http_status(:created)
       expect(json_response['user_limit']).to eq 0
-      expect(Date.parse(json_response['starts_at'])).to eq Date.today - 1.month
+      expect(Date.parse(json_response['starts_at'])).to eq Date.new(1970, 1, 1)
       expect(Date.parse(json_response['expires_at'])).to eq Date.today + 11.months
       expect(json_response['active_users']).to eq 1
       expect(json_response['licensee']).not_to be_empty