diff --git a/tests/Feature/AttendanceTest.php b/tests/Feature/AttendanceTest.php
index c2f6eae..6f984f0 100644
--- a/tests/Feature/AttendanceTest.php
+++ b/tests/Feature/AttendanceTest.php
@@ -2,6 +2,7 @@
 
 use App\Enums\RoleEnum;
 use App\Filament\Resources\Learning\Attendances\Pages\ManageAttendances;
+use App\Filament\Resources\Learning\ClassSessions\Pages\ListCourseSessions;
 use App\Models\Attendance;
 use App\Models\ClassSession;
 use App\Models\Course;
@@ -25,6 +26,9 @@
         'ViewAny:Attendance',
         'Create:Attendance',
         'Delete:Attendance',
+        'ViewAny:Course',
+        'ViewAny:ClassSession',
+        'View:ClassSession',
     ];
 
     foreach ($permissions as $permission) {
@@ -168,3 +172,91 @@
             ->assertCanNotSeeTableRecords([$att2]);
     });
 });
+
+describe('Attendance Delivery Status', function () {
+    beforeEach(function () {
+        $this->user = User::factory()->create();
+        $this->user->assignRole(RoleEnum::Student);
+        $this->user->givePermissionTo(['ViewAny:Attendance']);
+        $this->student = Student::factory()->create(['user_id' => $this->user->id]);
+        $this->actingAs($this->user);
+        $this->currentSemester = app(GeneralSettings::class)->current_semester;
+    });
+
+    it('allows attendance for past sessions if not yet sent to lecturer', function () {
+        $course = Course::factory()->create(['semester' => $this->currentSemester]);
+        $yesterday = now()->subDay();
+
+        $session = ClassSession::factory()->create([
+            'course_id' => $course->id,
+            'date' => $yesterday->toDateString(),
+            'start_time' => $yesterday->copy()->setTime(8, 0),
+            'end_time' => $yesterday->copy()->setTime(10, 0),
+            'is_sent_to_lecturer' => false,
+        ]);
+
+        $schedule = CourseSchedule::factory()->create([
+            'course_id' => $course->id,
+            'day_of_week' => $yesterday->dayOfWeekIso,
+        ]);
+
+        Livewire::test(ManageAttendances::class)
+            ->call('attend', $session->id)
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('attendances', [
+            'student_id' => $this->student->id,
+            'class_session_id' => $session->id,
+        ]);
+    });
+
+    it('prevents attendance if session is already sent to lecturer', function () {
+        $course = Course::factory()->create(['semester' => $this->currentSemester]);
+        $now = now();
+
+        $session = ClassSession::factory()->create([
+            'course_id' => $course->id,
+            'date' => $now->toDateString(),
+            'start_time' => $now->copy()->subHours(1),
+            'is_sent_to_lecturer' => true,
+        ]);
+
+        Livewire::test(ManageAttendances::class)
+            ->call('attend', $session->id);
+
+        $this->assertDatabaseMissing('attendances', [
+            'student_id' => $this->student->id,
+            'class_session_id' => $session->id,
+        ]);
+    });
+
+    it('allows Kosma/Developer to toggle delivery status', function () {
+        $kosmaUser = User::factory()->create();
+        $kosmaUser->assignRole(RoleEnum::Kosma);
+        $kosmaUser->givePermissionTo(['ViewAny:Course', 'ViewAny:ClassSession', 'ViewAny:Attendance']);
+        $this->actingAs($kosmaUser);
+
+        $course = Course::factory()->create(['semester' => $this->currentSemester]);
+        $session = ClassSession::factory()->create([
+            'course_id' => $course->id,
+            'is_sent_to_lecturer' => false,
+        ]);
+
+        // Using ListCourseSessions page to trigger the action
+        Livewire::test(ListCourseSessions::class, [
+            'course' => $course,
+        ])
+            ->callAction('markAsSentAction', [], ['record' => $session->id])
+            ->assertHasNoErrors();
+
+        expect($session->fresh()->is_sent_to_lecturer)->toBeTrue();
+
+        Livewire::test(ListCourseSessions::class, [
+            'course' => $course,
+        ])
+            ->callAction('markAsSentAction', [], ['record' => $session->id])
+            ->assertHasNoErrors();
+
+        expect($session->fresh()->is_sent_to_lecturer)->toBeFalse();
+    });
+});