Implementasi Unit Test

Nama: Azka Rizqullah Ramadhani

NRP: 5025231148

Kelas: Pemrograman Berbasis Object (A)

Class SalesItem

import java.util.ArrayList;
import java.util.Iterator;
public class SalesItem
{
    private String name;
    private int price; // in cents
    private ArrayList<Comment> comments;
    public SalesItem(String name, int price) {
        this.name = name;
        this.price = price;
        comments = new ArrayList<Comment>();
    }
    public String getName(){
        return name;
    }

    public int getPrice(){
        return price;
    }

    public int getNumberOfComments() {
        return comments.size();
    }
    public boolean addComment(String author, String text, int rating) {
        if(ratingInvalid(rating)) { // reject invalid ratings
            return false;
        }
        if(findCommentByAuthor(author) != null) {
            return false;
        }
        comments.add(new Comment(author, text, rating));
        return true;
    }
    public void removeComment(int index){
        if(index >=0 && index < comments.size()) { // index is valid
            comments.remove(index);
        }
    }
    public void upvoteComment(int index)
    {
        if(index >=0 && index < comments.size()) { // index is valid
            comments.get(index).upvote();
        }
    }

    public void downvoteComment(int index)
    {
        if(index >=0 && index < comments.size()) { // index is valid
            comments.get(index).downvote();
        }
    }

    public void showInfo()
    {
        System.out.println("*** " + name + " ***");
        System.out.println("Price: " + priceString(price));
        System.out.println();
        System.out.println("Customer comments:");
        for(Comment comment : comments) {
            System.out.println("-----------------------------------");
            System.out.println(comment.getFullDetails());
        }
        System.out.println();
        System.out.println("=====================================");
    }

    public Comment findMostHelpfulComment()
    {
        Iterator<Comment> it = comments.iterator();
        Comment best = it.next();
        while(it.hasNext()) {
            Comment current = it.next();
            if(current.getVoteCount() > best.getVoteCount()) {
                best = current;
            }
        }
        return best;
    }

    private boolean ratingInvalid(int rating) {
        return rating < 0 || rating > 5;
    }

    private Comment findCommentByAuthor(String author)
    {
        for(Comment comment : comments) {
            if(comment.getAuthor().equals(author)) {
                return comment;
            }
        }
        return null;
    }

    private String priceString(int price)
    {
        int dollars = price / 100;
        int cents = price - (dollars*100);
        if(cents <= 9) {
            return "$" + dollars + ".0" + cents; // zero padding
        }
        else {
            return "$" + dollars + "." + cents;
        }
    }
}

Class Comment

public class Comment {
    private String author;
    private String text;
    private int rating;
    private int votes;

    public Comment(String author, String text, int rating) {
        this.author = author;
        this.text = text;
        this.rating = rating;
        this.votes = 0;
    }

    public String getAuthor() {
        return author;
    }

    public String getFullDetails() {
        return "Author: " + author + "\n" +
                "Rating: " + rating + "\n" +
                "Votes: " + votes + "\n" +
                "Comment: " + text;
    }

    public int getVoteCount() {
        return votes;
    }

    public void upvote() {
        votes++;
    }

    public void downvote() {
        votes--;
    }
}

Class SalesItemTest

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.junit.jupiter.api.Test;

public class SalesItemTest {

    @Test
    public void testAddCommentAndCount() {
        SalesItem salesItem = new SalesItem("Java Book", 12345);

        assertTrue(salesItem.addComment("James Duckling", "Great book...", 4));
        assertTrue(salesItem.addComment("Fred", "Like it", 2));

        assertEquals(2, salesItem.getNumberOfComments());
    }

    @Test
    public void testRejectDuplicateAuthorComment() {
        SalesItem salesItem = new SalesItem("Java Book", 12345);

        assertTrue(salesItem.addComment("James Duckling", "Great book...", 4));

        assertEquals(false, salesItem.addComment("James Duckling", "Not as good on second read.", 3));
    }

    @Test
    public void testRejectInvalidRating() {
        SalesItem salesItem = new SalesItem("Java Book", 12345);

        assertEquals(true, salesItem.addComment("Jane Doe", "Not my style", 0));

        assertEquals(false, salesItem.addComment("John Doe", "Amazing read!", 6));
    }
}

Hasil

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