Create a Junit Test file for the following class IN JAVA. Use assert methods for Junit. Design your tests so that a complete & correct implementation of Book would pass and skeleton implementation will fail. I have provided the skeleton code of Book.java and Author.java, Create a Junit Test file, TestBook.java.

Book.java

package edu.odu.cs.cs350;

import java.util.Iterator;

/**

* A book object as it might be recorded in a publisher's catalog or a library.

*

*

* This is not a capture of the contents of the book, but of the metadata that

* describes the book: authors, title, etc.

*

* @author zeil

*

*/

public class Book implements Cloneable, Iterable {

/**

* Create a "blank" book with empty strings for title, publisher, ISBN

* and an empty (zero-length) list of authors.

*/

public Book() {

// TODO

}

/**

* Create a new book.

* @param title title of the book

* @param publisher publisher of the book.

* @param isbn ISBN identifier for the book.

* @param authors list of authors for this book.

*/

public Book(String title, String publisher, String isbn, Author[] authors) {

// TODO

}

/**

* Get the title of this book.

* @return the title

*/

public String getTitle() {

// TODO

return "";

}

/**

* Set the title of this book.

* @param title the title to set

*/

public void setTitle(String title) {

// TODO

}

/**

* Get the ISBN of this book.

* @return the ISBN

*/

public String getISBN() {

// TODO

return "";

}

/**

* Set the ISBN of this book.

* @param isbn the isbn to set

*/

public void setISBN(String isbn) {

// TODO

}

/**

* Get the publisher of this book.

* @return the publisher

*/

public String getPublisher() {

// TODO

return "";

}

/**

* Set the publisher of this book.

* @param publisher the publisher to set

*/

public void setPublisher(String publisher) {

// TODO

}

/**

* How many authors does this book have?

* @return number of authors

*/

public int numAuthors() {

// TODO

return -1;

}

/**

* Add an author to the end of the books's list (if that author is

* not already in there).

*

* @param au author to be added

*/

public void addAuthor(Author au) {

// TODO

}

/**

* Render the book as a string in a format guaranteed to

* contain all fields.

*/

public String toString() {

// TODO

return "";

}

// Comparison and hashing

/**

* Compares two books for equality. They are considered equal if

* they have the same ISBN.

*

* @param obj object to be compared for equality with this duration

* @return true if the specified object is equal to this one

*/

public boolean equals(Object obj) {

// TODO

return false;

}

/**

* Returns the hash code value for this object.

*

* @return the hash code value for this book

*/

public int hashCode() {

// TODO

return 0;

}

/**

* Return a (deep) copy of this object.

*/

@Override

public Object clone() {

// TODO

return null;

}

/**

* Provide access to the list of authors. e.g.,

* Book book = new Book(...);

* for (Author au: book) {

* doSomethingWithAuthor (au);

* }

*

* @return iterator over the authors.

*/

public Iterator iterator() {

// TODO

return null;

}

}

Author.java

/**

*

*/

package edu.odu.cs.cs350;

/**

* An author of a book. Currently, this contains only the author's name.

*

* @author zeil

*

*/

public class Author implements Cloneable, Comparable {

/**

* The surname ("family name") of this author.

*/

private String surname;

/**

* The given name ("personal name" or "first name") of the author.

*/

private String givenName;

/**

* Create an author.

* @param givenName the personal name of the author

* @param surname the family name of the author

*/

public Author (String givenName, String surname) {

this.givenName = givenName;

this.surname = surname;

}

/**

* Compare two authors for equality.

*

* @param obj another author

* @return true ff they have the same name

*/

public boolean equals(Object obj) {

if (obj instanceof Author) {

Author au = (Author) obj;

return givenName.equals(au.givenName)

&& surname.equals(au.surname);

} else {

return false;

}

}

/**

* Get the name of the author in a form suitable for sorting.

* surname, givenName

* @return sortable name of the author

*/

public String getSortingName() {

return surname + ", " + givenName;

}

/**

* Return the author's name in conventional form.

* givenName surname

*/

public String toString() {

return givenName + " " + surname;

}

/**

* Return the surname of this author

* @return the surname

*/

public String getSurname() {

return surname;

}

/**

* Return the given name of this author

* @return the given name

*/

public String getGivenName() {

return givenName;

}

/**

* Compare this author to another, returning a negative

* value if this author should follow the other in a sorted list,

* zero if they are equal, and a positive value if this author should

* precede the other in a sorted list.

*

* @param au the other author to be compared against.

* @return number whose sign indicates the comparison result

*/

public int compareTo(Author au) {

return getSortingName().compareTo(au.getSortingName());

}

}