+ /**
+ * Create and return a new test chapter
+ * @param array $input
+ * @param Book $book
+ * @return Chapter
+ */
+ public function newChapter($input = ['name' => 'test chapter', 'description' => 'My new test chapter'], Book $book) {
+ return $this->app[EntityRepo::class]->createFromInput('chapter', $input, $book);