public void testAddBook() { // create test objects setup(); // Test initial size of books is 0 assertEquals(0, myLibrary.getBooks().size()); myLibrary.addBook(b1); myLibrary.addBook(b2); assertEquals(2, myLibrary.getBooks().size()); assertEquals(0, myLibrary.getBooks().indexOf(b1)); assertEquals(1, myLibrary.getBooks().indexOf(b2)); myLibrary.removeBook(b1); assertEquals(1, myLibrary.getBooks().size()); assertEquals(0, myLibrary.getBooks().indexOf(b2)); myLibrary.removeBook(b2); assertEquals(0, myLibrary.getBooks().size()); }