🔥 **Cleanup:** Removed BookCase and OrangePill models, factories, migrations, and related references. Added tests for new service and meetup creation flows. Updated PHPUnit settings and browser-specific configurations.

tests/Feature/Courses/CourseCrudTest.php

@@ -0,0 +1,66 @@
+<?php
+
+use App\Models\Course;
+use App\Models\Lecturer;
+use Livewire\Livewire;
+
+beforeEach(function () {
+    $this->lecturer = Lecturer::factory()->create();
+});
+
+it('creates a Course with valid data', function () {
+    actingAsUser();
+
+    Livewire::test('courses.create')
+        ->set('name', 'Bitcoin 101')
+        ->set('lecturer_id', $this->lecturer->id)
+        ->call('createCourse')
+        ->assertHasNoErrors();
+
+    expect(Course::query()->where('name', 'Bitcoin 101')->exists())->toBeTrue();
+});
+
+it('rejects course creation without a name', function () {
+    actingAsUser();
+
+    Livewire::test('courses.create')
+        ->set('lecturer_id', $this->lecturer->id)
+        ->call('createCourse')
+        ->assertHasErrors(['name' => 'required']);
+});
+
+it('rejects course creation without a lecturer', function () {
+    actingAsUser();
+
+    Livewire::test('courses.create')
+        ->set('name', 'Course Without Lecturer')
+        ->call('createCourse')
+        ->assertHasErrors(['lecturer_id' => 'required']);
+});
+
+it('rejects course creation with non-existent lecturer_id', function () {
+    actingAsUser();
+
+    Livewire::test('courses.create')
+        ->set('name', 'Bad Lecturer Course')
+        ->set('lecturer_id', 999999)
+        ->call('createCourse')
+        ->assertHasErrors(['lecturer_id' => 'exists']);
+});
+
+it('updates an existing course when authenticated', function () {
+    $course = Course::factory()->create(['name' => 'Old Name', 'lecturer_id' => $this->lecturer->id]);
+    actingAsUser();
+
+    Livewire::test('courses.edit', ['course' => $course])
+        ->set('name', 'New Name')
+        ->set('lecturer_id', $this->lecturer->id)
+        ->call('updateCourse')
+        ->assertHasNoErrors();
+
+    expect($course->refresh()->name)->toBe('New Name');
+});
+
+it('redirects guests when accessing course-create', function () {
+    $this->get('/de/course-create')->assertRedirect(route('login'));
+});