Fix time-sensitive helper spec

Signed-off-by: Rémy Coutable <remy@rymai.me>

spec/helpers/milestones_helper_spec.rb

@@ -49,8 +49,12 @@ describe MilestonesHelper do
   end
 
   describe '#milestone_remaining_days' do
+    around do |example|
+      Timecop.freeze(Time.utc(2017, 3, 17)) { example.run }
+    end
+
     context 'when less than 31 days remaining' do
-      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 12.2.days.from_now)) }
+      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 12.days.from_now.utc)) }
 
       it 'returns days remaining' do
         expect(milestone_remaining).to eq("<strong>12</strong> days remaining")
@@ -58,7 +62,7 @@ describe MilestonesHelper do
     end
 
     context 'when less than 1 year and more than 30 days remaining' do
-      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 2.months.from_now)) }
+      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 2.months.from_now.utc)) }
 
       it 'returns months remaining' do
         expect(milestone_remaining).to eq("<strong>2</strong> months remaining")
@@ -66,7 +70,7 @@ describe MilestonesHelper do
     end
 
     context 'when more than 1 year remaining' do
-      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 1.year.from_now + 2.days)) }
+      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: (1.year.from_now + 2.days).utc)) }
 
       it 'returns years remaining' do
         expect(milestone_remaining).to eq("<strong>1</strong> year remaining")
@@ -74,7 +78,7 @@ describe MilestonesHelper do
     end
 
     context 'when milestone is expired' do
-      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 2.days.ago)) }
+      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 2.days.ago.utc)) }
 
       it 'returns "Past due"' do
         expect(milestone_remaining).to eq("<strong>Past due</strong>")
@@ -82,7 +86,7 @@ describe MilestonesHelper do
     end
 
     context 'when milestone has start_date in the future' do
-      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, start_date: 2.days.from_now)) }
+      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, start_date: 2.days.from_now.utc)) }
 
       it 'returns "Upcoming"' do
         expect(milestone_remaining).to eq("<strong>Upcoming</strong>")
@@ -90,7 +94,7 @@ describe MilestonesHelper do
     end
 
     context 'when milestone has start_date in the past' do
-      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, start_date: 2.days.ago)) }
+      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, start_date: 2.days.ago.utc)) }
 
       it 'returns days elapsed' do
         expect(milestone_remaining).to eq("<strong>2</strong> days elapsed")