Your challenge, as in any TDD project, is to design your tests so that a complete & correct implementation of Magazine will pass.

heres the code:

import java.time.LocalDate; import java.util.Set;

/** * A magazine containing a collection of articles, organized by (starting) page number. * * * @author zeil * */ public class Magazine implements Cloneable {

/** * Create a "blank" magazine with empty strings for title, the current * date for the publication date, * and an empty (zero-length) list of articles. */ public Magazine() { }

/** * Create a new magazine. * @param title title of the magazine * @param publDate publication date of the magazine. */ public Magazine(String title, LocalDate pubDate) { }

/** * Get the title of this magazine. * @return the title */ public String getTitle() { return ""; }

/** * Set the title of this magazine. * @param title the title to set */ public void setTitle(String title) { }

/** * Get the publication date of this magazine. * @return the date */ public LocalDate getPublicationDate() { return null; }

/** * Set the publication date of this magazine. * @param pubDate the publication date to set */ public void setPublicationDate(LocalDate pubDate) { }

/** * How many articles does this magazine have? * @return number of articles */ public int numArticles() { return 0; } /** * Add an article to the magazine at an indicated starting page. * * If an article is already at that page, replaces the existing one. * * @param startingPage first page of the article * @param article author to be added */ public void addArticle(int startingPage, Article article) { } /** * Get the article previously placed at a given starting page. * * @param startingAtPage a page number in the magazine * @return the article starting at that page, or null if no article * has been put there. */ public Article getArticle (int startingAtPage) { return null; } /** * Render the magazine as a string in a format guaranteed to * contain all fields. */ public String toString() { return ""; }

// Comparison and hashing

/** * Compares two magazines for equality. They are considered equal if * all functions on them return equal results.. * * @param obj object to be compared for equality with this magazine * @return true if the specified object is equal to this one */ public boolean equals(Object obj) { return true; }

/** * Returns the hash code value for this object. * * @return the hash code value for this magazine */ public int hashCode() { return 0; }

/** * Return a (deep) copy of this object. */ @Override public Object clone() { return this; }

/** * Provide access to the table of contents of * this magazine. e.g., * Magazine magazine = new Magazine(...); * ... * for (Integer page: magazine,startingPages()) { * Article art = magazine.getArticle(page); * doSomethingWith (page, art); * } * * @return iterator over the starting page numbers. Numbers * are returned in ascending order. */ public Set startingPages() { return null; }

}