diff --git a/app/Filament/Resources/Learning/Assignments/Pages/ListAssignments.php b/app/Filament/Resources/Learning/Assignments/Pages/ListAssignments.php
index 18411b7..61bc771 100644
--- a/app/Filament/Resources/Learning/Assignments/Pages/ListAssignments.php
+++ b/app/Filament/Resources/Learning/Assignments/Pages/ListAssignments.php
@@ -68,6 +68,15 @@ public function deleteAssignmentAction(): Action
     public function assignments(): Collection
     {
         $studentProfile = auth()->user()->student;
+
+        if (! $studentProfile) {
+            return Assignment::with(['course', 'assignmentSubmissions', 'studyGroups.students'])
+                ->whereHas('course', function ($q) {
+                    $q->where('semester', app(GeneralSettings::class)->current_semester);
+                })
+                ->get();
+        }
+
         $pinnedIds = $this->pinnedIds;
 
         $assignments = Assignment::with(['course', 'assignmentSubmissions' => function ($q) use ($studentProfile) {
@@ -130,6 +139,11 @@ private function getAssignmentPriority($assignment): int
     public function assignmentCards()
     {
         $studentProfile = auth()->user()->student;
+
+        if (! $studentProfile) {
+            return collect();
+        }
+
         $pinnedIds = $this->pinnedIds;
 
         return $this->assignments()->map(function ($assignment) use ($studentProfile, $pinnedIds) {
@@ -224,6 +238,10 @@ public function pinnedIds(): array
     {
         $studentProfile = auth()->user()->student;
 
+        if (! $studentProfile) {
+            return [];
+        }
+
         return AssignmentPin::where('student_id', $studentProfile->id)
             ->pluck('assignment_id')
             ->toArray();
diff --git a/database/factories/AssignmentFactory.php b/database/factories/AssignmentFactory.php
new file mode 100644
index 0000000..d3862c4
--- /dev/null
+++ b/database/factories/AssignmentFactory.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Enums\AssignmentType;
+use App\Models\Assignment;
+use App\Models\Course;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class AssignmentFactory extends Factory
+{
+    protected $model = Assignment::class;
+
+    public function definition(): array
+    {
+        return [
+            'course_id' => Course::factory(),
+            'class_session_id' => null,
+            'title' => $this->faker->sentence(),
+            'description' => $this->faker->paragraph(),
+            'due_date' => $this->faker->dateTimeBetween('now', '+1 month'),
+            'type' => $this->faker->randomElement(AssignmentType::cases()),
+        ];
+    }
+}
diff --git a/tests/Feature/AssignmentTest.php b/tests/Feature/AssignmentTest.php
new file mode 100644
index 0000000..c94c70d
--- /dev/null
+++ b/tests/Feature/AssignmentTest.php
@@ -0,0 +1,243 @@
+<?php
+
+use App\Enums\AssignmentType;
+use App\Enums\RoleEnum;
+use App\Filament\Resources\Learning\Assignments\Pages\CreateAssignment;
+use App\Filament\Resources\Learning\Assignments\Pages\ListAssignments;
+use App\Filament\Resources\Learning\Assignments\Pages\SubmissionDetailPage;
+use App\Filament\Resources\Learning\Assignments\Pages\SubmitAssignmentPage;
+use App\Models\Assignment;
+use App\Models\ClassSession;
+use App\Models\Course;
+use App\Models\Student;
+use App\Models\StudyGroup;
+use App\Models\User;
+use App\Settings\GeneralSettings;
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Facades\Storage;
+use Livewire\Livewire;
+use Spatie\Permission\Models\Permission;
+use Spatie\Permission\Models\Role;
+
+/**
+ * Setup necessary roles and permissions
+ */
+beforeEach(function () {
+    Role::findOrCreate(RoleEnum::Developer->value);
+    Role::findOrCreate(RoleEnum::Kosma->value);
+    Role::findOrCreate(RoleEnum::Student->value);
+
+    $permissions = [
+        'ViewAny:Assignment',
+        'View:Assignment',
+        'Create:Assignment',
+        'Update:Assignment',
+        'Delete:Assignment',
+    ];
+
+    foreach ($permissions as $permission) {
+        Permission::findOrCreate($permission);
+    }
+
+    Storage::fake('public');
+    $this->currentSemester = app(GeneralSettings::class)->current_semester;
+});
+
+describe('Assignment Authorization', function () {
+    it('restricts actions to Developer and Kosma, while allowing students to view and submit', function () {
+        $developer = User::factory()->create();
+        $developer->assignRole(RoleEnum::Developer);
+        $developer->givePermissionTo(['ViewAny:Assignment', 'Create:Assignment']);
+
+        $studentUser = User::factory()->create();
+        $studentUser->assignRole(RoleEnum::Student);
+        $studentUser->givePermissionTo(['ViewAny:Assignment']);
+        $student = Student::factory()->create(['user_id' => $studentUser->id]);
+
+        $this->actingAs($developer);
+        Livewire::test(ListAssignments::class)
+            ->assertActionVisible('createAssignment');
+
+        $this->actingAs($studentUser);
+        Livewire::test(ListAssignments::class)
+            ->assertActionHidden('createAssignment');
+    });
+});
+
+describe('Assignment Model', function () {
+    it('has relationships and supports soft deletes', function () {
+        $assignment = Assignment::factory()->create();
+
+        expect($assignment->course)->toBeInstanceOf(Course::class);
+        expect($assignment->assignmentSubmissions())->toBeInstanceOf(\Illuminate\Database\Eloquent\Relations\HasMany::class);
+
+        $assignment->delete();
+        expect($assignment->refresh()->trashed())->toBeTrue();
+    });
+});
+
+describe('Assignment CRUD and Rules', function () {
+    beforeEach(function () {
+        $user = User::factory()->create();
+        $user->assignRole(RoleEnum::Developer);
+        $user->givePermissionTo(['ViewAny:Assignment', 'Create:Assignment', 'Update:Assignment', 'Delete:Assignment']);
+        $this->actingAs($user);
+    });
+
+    it('can create an assignment', function () {
+        $course = Course::factory()->create(['semester' => $this->currentSemester]);
+        $students = Student::factory()->count(2)->create();
+
+        Livewire::test(CreateAssignment::class)
+            ->fillForm([
+                'title' => 'New Test Assignment',
+                'course_id' => $course->id,
+                'due_date' => now()->addDays(7)->toDateTimeString(),
+                'type' => AssignmentType::Individual->value,
+                'student_ids' => $students->pluck('id')->toArray(),
+            ])
+            ->call('create')
+            ->assertHasNoFormErrors();
+
+        $this->assertDatabaseHas('assignments', [
+            'title' => 'New Test Assignment',
+            'course_id' => $course->id,
+        ]);
+    });
+
+    it('enforces one assignment per session rule', function () {
+        $course = Course::factory()->create(['semester' => $this->currentSemester]);
+        $session = ClassSession::factory()->create(['course_id' => $course->id]);
+
+        Assignment::factory()->create([
+            'course_id' => $course->id,
+            'class_session_id' => $session->id,
+            'type' => AssignmentType::Individual,
+        ]);
+
+        Livewire::test(CreateAssignment::class)
+            ->set('data.course_id', $course->id)
+            ->assertFormSet(['class_session_id' => null]);
+    });
+});
+
+describe('Assignment Submission Logic', function () {
+    it('allows individual submission', function () {
+        $user = User::factory()->create();
+        $user->assignRole(RoleEnum::Student);
+        $user->givePermissionTo(['ViewAny:Assignment']);
+        $student = Student::factory()->create(['user_id' => $user->id]);
+
+        $assignment = Assignment::factory()->create([
+            'type' => AssignmentType::Individual,
+            'due_date' => now()->addDays(1),
+        ]);
+        $assignment->students()->attach($student->id);
+        $assignment->course->update(['semester' => $this->currentSemester]);
+
+        $file = UploadedFile::fake()->create('submission.pdf', 100, 'application/pdf');
+
+        $this->actingAs($user);
+        Livewire::test(SubmitAssignmentPage::class, ['record' => $assignment])
+            ->assertSuccessful()
+            ->set('file', $file)
+            ->call('submit')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('assignment_submissions', [
+            'assignment_id' => $assignment->id,
+            'student_id' => $student->id,
+        ]);
+    });
+
+    it('only allows group leader to submit group assignments', function () {
+        $course = Course::factory()->create(['semester' => $this->currentSemester]);
+
+        $leaderUser = User::factory()->create();
+        $leaderUser->assignRole(RoleEnum::Student);
+        $leaderUser->givePermissionTo(['ViewAny:Assignment']);
+        $leader = Student::factory()->create(['user_id' => $leaderUser->id]);
+
+        $memberUser = User::factory()->create();
+        $memberUser->assignRole(RoleEnum::Student);
+        $memberUser->givePermissionTo(['ViewAny:Assignment']);
+        $member = Student::factory()->create(['user_id' => $memberUser->id]);
+
+        $group = StudyGroup::factory()->create([
+            'leader_id' => $leader->id,
+        ]);
+        $group->courses()->attach($course->id);
+        $group->students()->attach($member->id);
+
+        $assignment = Assignment::factory()->create([
+            'course_id' => $course->id,
+            'type' => AssignmentType::Group,
+            'due_date' => now()->addDays(1),
+        ]);
+        $assignment->studyGroups()->attach($group->id);
+
+        // Test Leader can submit
+        $this->actingAs($leaderUser);
+        Livewire::test(SubmitAssignmentPage::class, ['record' => $assignment])
+            ->assertSuccessful()
+            ->assertSet('canSubmit', true);
+
+        // Test Member cannot submit
+        $this->actingAs($memberUser);
+        Livewire::test(SubmitAssignmentPage::class, ['record' => $assignment])
+            ->assertSuccessful()
+            ->assertSet('canSubmit', false);
+    });
+});
+
+describe('Assignment Pins and Interactions', function () {
+    beforeEach(function () {
+        $user = User::factory()->create();
+        $user->assignRole(RoleEnum::Student);
+        $user->givePermissionTo(['ViewAny:Assignment']);
+        $this->studentProfile = Student::factory()->create(['user_id' => $user->id]);
+        $this->actingAs($user);
+        $this->currentSemester = app(GeneralSettings::class)->current_semester;
+    });
+
+    it('can pin and unpin an assignment', function () {
+        $assignment = Assignment::factory()->create();
+        $assignment->course->update(['semester' => $this->currentSemester]);
+        $assignment->students()->attach($this->studentProfile->id);
+
+        Livewire::test(ListAssignments::class)
+            ->callAction('pin', [], ['record' => $assignment->id]);
+
+        $this->assertDatabaseHas('assignment_pins', [
+            'student_id' => $this->studentProfile->id,
+            'assignment_id' => $assignment->id,
+        ]);
+
+        Livewire::test(ListAssignments::class)
+            ->callAction('pin', [], ['record' => $assignment->id]);
+
+        $this->assertDatabaseMissing('assignment_pins', [
+            'student_id' => $this->studentProfile->id,
+            'assignment_id' => $assignment->id,
+        ]);
+    });
+});
+
+describe('Assignment Details and Preview', function () {
+    beforeEach(function () {
+        $user = User::factory()->create();
+        $user->assignRole(RoleEnum::Developer);
+        $user->givePermissionTo(['ViewAny:Assignment', 'View:Assignment']);
+        $this->actingAs($user);
+        $this->currentSemester = app(GeneralSettings::class)->current_semester;
+    });
+
+    it('can view submission detail page', function () {
+        $assignment = Assignment::factory()->create();
+        $assignment->course->update(['semester' => $this->currentSemester]);
+
+        Livewire::test(SubmissionDetailPage::class, ['record' => $assignment])
+            ->assertSuccessful()
+            ->assertSee($assignment->title);
+    });
+});