public function test_deleting_section_soft_deletes_its_topics()
{
// GIVEN we have a user
$user = factory(User::class, 1)->create();
// AND we have a section
$section = factory(Section::class, 1)->create(['parent_id' => null, 'user_id' => $user->id]);
// AND that section has topics
factory(Topic::class, 10)->create(['section_id' => $section->id]);
$topicsInSectionCount = $section->topics->count();
$topicCount = Topic::all()->count();
// WHEN we delete that section
$section->delete();
// THEN the total number of topics is reduced by the number of topics
// belonging to the original section
$topicCountAfterDeletion = Topic::all()->count();
$this->assertEquals($topicCount - $topicsInSectionCount, $topicCountAfterDeletion);
// AND the count of topics for that section is now zero
$this->assertEquals(Topic::where('section_id', $section->id)->count(), 0);
// BUT that section has soft deleted topics with match the orignal count
$this->assertEquals(Topic::withTrashed()->where('section_id', $section->id)->count(), $topicsInSectionCount);
}
