public function test_deleting_section_soft_deletes_its_subsections()
 {
     // given we have a user with a section and that sub section
     $user = factory(User::class, 1)->create();
     // AND we have a section
     $section = factory(Section::class, 1)->create(['parent_id' => null, 'user_id' => $user->id]);
     // with subsections
     factory(Section::class, 6)->create(['parent_id' => $section->id, 'user_id' => $user->id]);
     $subsectionCount = Section::where('parent_id', $section->id)->count();
     // when we delete that section
     $section->delete();
     // then section and subsections are soft deleted
     $this->assertTrue($section->trashed());
     // we have no subsections
     $this->assertEquals(Section::where('parent_id', $section->id)->count(), 0);
     // we have the right amount of soft deleted subsections
     $this->assertEquals(Section::withTrashed()->where('parent_id', $section->id)->count(), $subsectionCount);
 }