Def tokens available on

Changelog.md

@@ -21,6 +21,7 @@
 - Added a progress bar for when a student uploads a file for submission (#7078)
 - Added validations to the `TextAnnotation` model to ensure `line_start` and `line_end` are >= 1, and `column_start` and `column_end` are >= 0. (#7081)
 - Calculate and display the exact future time for the next token generation to help students plan their test runs more effectively. (#7127)
+- Set the default date for "Tokens available on" to the current time (#7173).
 
 ### 🐛 Bug fixes
 

app/controllers/assignments_controller.rb

@@ -229,7 +229,7 @@ def create
     @assignment.transaction do
       begin
         @assignment = process_assignment_form(@assignment)
-        @assignment.token_start_date = @assignment.due_date
+        @assignment.token_start_date = Time.current
         @assignment.token_period = 1
       rescue StandardError => e
         @assignment.errors.add(:base, e.message)

spec/models/assignment_spec.rb

@@ -1,4 +1,6 @@
 describe Assignment do
+  include ActiveSupport::Testing::TimeHelpers
+
   describe 'ActiveRecord associations' do
     it { is_expected.to have_one(:submission_rule).dependent(:destroy) }
     it { is_expected.to validate_presence_of(:submission_rule) }
@@ -66,6 +68,29 @@
         expect(@assignment.parent_assessment_id).to be_nil
         expect(@assignment.is_peer_review?).to be false
       end
+
+      it 'sets default token_start_date to current time if not provided' do
+        travel_to Time.zone.local(2024, 8, 6, 22, 0, 0) do
+          assignment = build(:assignment_for_student_tests)
+          expect(assignment.token_start_date).to eq(Time.current)
+        end
+      end
+
+      it 'sets token_start_date to the provided date' do
+        travel_to Time.zone.local(2024, 12, 25, 10, 0, 0) do
+          provided_date = Time.current
+          assignment = build(:assignment_for_student_tests, token_start_date: provided_date)
+          expect(assignment.token_start_date).to eq(provided_date)
+        end
+      end
+
+      it 'does not overwrite token_start_date if already set' do
+        initial_date = Time.zone.local(2024, 5, 20, 15, 0, 0)
+        travel_to initial_date do
+          assignment = build(:assignment_for_student_tests, token_start_date: initial_date)
+          expect(assignment.token_start_date).to eq(initial_date)
+        end
+      end
     end
 
     it 'should catch an invalid date' do