	@Test
	public void booksAndAuthors() {


		Author author = new Author();
		author.name = "Greg L. Turnquist";

		author = authorRepo.save(author);

		Book book = new Book();
		book.title = "Spring Boot";
		book.addAuthor(author);

		bookRepo.save(book);

		bookRepo.deleteAll();

		assertThat(authorRepo.count()).isEqualTo(1);
	}