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); }