Lesson 11 – Create first methods in MyLibrary class
- Create test method for addBook, removeBook methods
- Create addBook, removeBook methods and test
- Create addPerson, removePerson methods
- Introduce Eclipse refactoring – move local variable to field
1 package org.totalbeginner.tutorial;
2
3 import java.util.ArrayList;
4
5 import org.totoalbeginner.tutorial.Person;
6
7 import junit.framework.TestCase;
8
9 public class MyLibraryTest extends TestCase {
10 private Book b1;
11 private Book b2;
12 private Person p1;
13 private Person p2;
14 private MyLibrary ml;
15
16 public void testMyLibrary() {
17 MyLibrary ml = new MyLibrary("Test");
18
19 assertEquals("Test", ml.name);
20
21 assertTrue(ml.books instanceof ArrayList);
22 assertTrue(ml.people instanceof ArrayList);
23
24
25 }
26
27 public void setup(){
28 b1 = new Book("Book1");
29 b2 = new Book("Book2");
30
31 p1 = new Person();
32 p2 = new Person();
33 p1.setName("Fred");
34 p2.setName("Sue");
35
36 ml = new MyLibrary("Test");
37 }
38
39 public void testAddBook(){
40 //create test objects
41 setup();
42
43 //test initial size is 0
44 assertEquals(0,ml.getBooks().size());
45
46 ml.addBook(b1);
47 ml.addBook(b2);
48
49 assertEquals(2, ml.getBooks().size());
50 assertEquals(0, ml.getBooks().indexOf(b1));
51 assertEquals(1,ml.getBooks().indexOf(b2));
52
53 ml.removeBook(b1);
54 assertEquals(1, ml.getBooks().size());
55 assertEquals(0, ml.getBooks().indexOf(b2));
56
57 ml.removeBook(b2);
58 assertEquals(0, ml.getBooks().size());
59 }
60
61 }
1 package org.totalbeginner.tutorial;
2
3 import java.util.ArrayList;
4
5 import org.totoalbeginner.tutorial.Person;
6
7 public class MyLibrary {
8
9 String name;
10 public String getName() {
11 return name;
12 }
13
14 public ArrayList<Person> getPeople() {
15 return people;
16 }
17
18 public ArrayList<Book> getBooks() {
19 return books;
20 }
21
22 ArrayList<Person> people;
23 ArrayList<Book> books;
24
25 public MyLibrary(String name) {
26 this.name = name;
27 books = new ArrayList<Book>();
28 people = new ArrayList<Person>();
29
30 }
31
32 public void addBook(Book b1) {
33 this.books.add(b1);
34
35 }
36
37 public void removeBook(Book b1) {
38 this.books.remove(b1);
39
40 }
41
42 public void addPerson(Person p1){
43 this.people.add(p1);
44 }
45
46 public void removePerson(Person p1){
47 this.people.remove(p1);
48 }
49 }