Complete the implementations of various classes in a bookStore. Read the API for bookStore carefully, the API of this lab is available under doc folder in the Java project folder (docindex.html). Some example tests are given to you in the Testerv3 class. We consider a database that stores information about books and owners. Each book has (e.g., String title, int price, int yearPublished), whereas BookStoreOwner has (String name and long id). You must implement all methods in the BookStore. For this question, you are required to submit Java files such as Book, BookStore, BookStoreOwner, SortBooksbyYear in your Eclipse project

package bookStore;

import static org.junit.Assert.*; import java.lang.reflect.Field; import java.lang.reflect.Modifier; import java.util.*;

import org.junit.Test; import org.junit.rules.Timeout; import org.junit.runners.MethodSorters;

import org.junit.FixMethodOrder; import org.junit.Rule;

@FixMethodOrder(MethodSorters.NAME_ASCENDING)

public class Testerv3 { @Rule public Timeout globalTimeout = Timeout.seconds(1);

@Test public void test01_staticFields() { try { List fields = Arrays.asList(BookStore.class.getDeclaredFields());

int nStatic = 0; for (Field f : fields) { int mod = f.getModifiers(); if (Modifier.isStatic(mod)) { nStatic++; } } assertTrue("there should be no static fields", nStatic == 0); } catch (Exception x) { fail("exception occurred trying to get the fields of this class"); } }

@Test public void test02a_ctor() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); assertEquals("ctor set the wrong BookStoreOwner", w, b.getOwner()); }

@Test public void test03a_copyCtor() { BookStoreOwner w = new BookStoreOwner("OwnerC"); BookStore b = new BookStore(w); BookStore c = new BookStore(b); assertEquals("copy ctor set the wrong owner", w, c.getOwner()); }

//changeOwner @Test(expected = IllegalArgumentException.class) public void test04a_changeOwner() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); BookStoreOwner x = new BookStoreOwner("OwnerB"); b.changeOwner(x, x); } @Test public void test04b_changeOwner() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); BookStoreOwner x = new BookStoreOwner("OwnerB"); b.changeOwner(w, x); assertEquals("changeOwner failed to set the correct owner", x, b.getOwner()); } //contains @Test public void test06a_contains() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); Book b1= new Book("ABC",2018, 36); assertFalse("contains returned true for an empty Bookstore!", b.contains(b1)); } @Test public void test06b_contains() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2011, 30); books.add(b3); Book b4= new Book("5G",2010, 10); books.add(b4); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); assertTrue("contains returned false for a BookStore with every book", b.contains(b1)); assertTrue("contains returned false for a BookStore with every book", b.contains(b2)); assertTrue("contains returned false for a BookStore with every book", b.contains(b3)); assertTrue("contains returned false for a BookStore with every book", b.contains(b4)); } @Test public void test06c_contains() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b1); Book b3= new Book("Optical Communication",2011, 30); books.add(b1); Book b4= new Book("5G",2010, 10); books.add(b1);

BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); assertTrue("contains returned true for a BookStore with only b1", b.contains(b1)); assertFalse("contains returned false for a BookStore with only b1", b.contains(b2)); assertFalse("contains returned false for a BookStore with only b1", b.contains(b3)); assertFalse("contains returned false for BookStore with only b1", b.contains(b4)); } //sellingsinglebook @Test public void test07a_sellingsingleBook() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2011, 30); books.add(b3); Book b4= new Book("5G",2010, 10); books.add(b4); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); Book got = b.sellingsingleBook(w, b1); assertEquals("selling returned the wrong Book", b1, got); got = b.sellingsingleBook(w, b2); assertEquals("selling returned the wrong Book", b2, got); got = b.sellingsingleBook(w, b3); assertEquals("selling returned the wrong Book", b3, got); got = b.sellingsingleBook(w, b4); assertEquals("selling returned the wrong Book", b4, got); } @Test public void test07b_sellingsingleBook() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2011,30); books.add(b3); Book b4= new Book("5G",2010, 10); books.add(b4); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); Book got = b.sellingsingleBook(new BookStoreOwner("OwnerB"),b1); assertNull("remove allowed a non-owner to remove a book", got); } }