【笔记】Eclipse and Java for Total Beginners—015
Lesson 15 – Finish MyLibrary Methods
- Create test for getAvailableBooks
- Create getAvailableBooks
- Create getUnavailableBooks
1 package org.totalbeginner.tutorial;
2
3 import java.util.ArrayList;
4
5 import org.omg.CORBA.PUBLIC_MEMBER;
6 import org.totoalbeginner.tutorial.Person;
7
8 import junit.framework.TestCase;
9
10 public class MyLibraryTest extends TestCase {
11 private Book b1;
12 private Book b2;
13 private Person p1;
14 private Person p2;
15 private MyLibrary ml;
16
17 public void testMyLibrary() {
18 MyLibrary ml = new MyLibrary("Test");
19
20 assertEquals("Test", ml.name);
21
22 assertTrue(ml.books instanceof ArrayList);
23 assertTrue(ml.people instanceof ArrayList);
24
25
26 }
27
28 public void setup(){
29 b1 = new Book("Book1");
30 b2 = new Book("Book2");
31
32 p1 = new Person();
33 p2 = new Person();
34 p1.setName("Fred");
35 p2.setName("Sue");
36
37 ml = new MyLibrary("Test");
38 }
39
40 public void testAddBook(){
41 //create test objects
42 setup();
43
44 //test initial size is 0
45 assertEquals(0,ml.getBooks().size());
46
47 ml.addBook(b1);
48 ml.addBook(b2);
49
50 assertEquals(2, ml.getBooks().size());
51 assertEquals(0, ml.getBooks().indexOf(b1));
52 assertEquals(1,ml.getBooks().indexOf(b2));
53
54 ml.removeBook(b1);
55 assertEquals(1, ml.getBooks().size());
56 assertEquals(0, ml.getBooks().indexOf(b2));
57
58 ml.removeBook(b2);
59 assertEquals(0, ml.getBooks().size());
60 }
61
62 public void testCheckOut() {
63 // set up objects
64 setup();
65
66 addItems();
67
68 assertTrue("Book did not check out correctly",
69 ml.checkOut(b1,p1));
70
71 assertEquals("Fred",b1.getPerson().getName());
72
73 assertFalse("Book was already checked out",
74 ml.checkOut(b1,p2));
75
76 assertTrue("Book check in failed", ml.checkIn(b1));
77
78 assertFalse("Book was already checked in", ml.checkIn(b1));
79
80 assertFalse("Book was never checked out", ml.checkIn(b2));
81
82 // additional test for maximumBooks
83 setup();
84 p1.setMaximumBooks(1);
85 addItems();
86
87 assertTrue("First book did not check out",
88 ml.checkOut(b2, p1));
89 assertFalse("Second book should not have checked out",
90 ml.checkOut(b1, p1));
91 }
92
93 private void addItems() {
94 ml.addBook(b1);
95 ml.addBook(b2);
96 ml.addPerson(p1);
97 ml.addPerson(p2);
98 }
99
100 public void testGetBooksForPerson() {
101 setup();
102 addItems();
103 assertEquals(0, ml.getBooksForPerson(p1).size());
104
105 ml.checkOut(b1, p1);
106
107 ArrayList<Book> testBooks = ml.getBooksForPerson(p1);
108 assertEquals(1, testBooks.size());
109 assertEquals(0, testBooks.indexOf(b1));
110
111 ml.checkOut(b2, p1);
112 testBooks = ml.getBooksForPerson(p1);
113 assertEquals(2, testBooks.size());
114 assertEquals(1, testBooks.indexOf(b2));
115
116 }
117
118 public void testGetAvailableBooks() {
119 setup();
120 addItems();
121 ArrayList<Book> testBooks = ml.getAvailableBooks();
122 assertEquals(2, testBooks.size());
123 assertEquals(1, testBooks.indexOf(b2));
124
125 ml.checkOut(b1, p1);
126 testBooks = ml.getAvailableBooks();
127 assertEquals(1, testBooks.size());
128 assertEquals(0, testBooks.indexOf(b2));
129
130 ml.checkOut(b2, p1);
131 testBooks = ml.getAvailableBooks();
132 assertEquals(0, testBooks.size());
133 }
134
135 public void testGetUnavailableBooks() {
136 setup();
137 addItems();
138 assertEquals(0, ml.getUnavailableBooks(p1).size());
139
140 ml.checkOut(b1, p1);
141
142 ArrayList<Book> testBooks = ml.getUnavailableBooks(p1);
143 assertEquals(1, testBooks.size());
144 assertEquals(0, testBooks.indexOf(b1));
145
146 ml.checkOut(b2, p1);
147 testBooks = ml.getUnavailableBooks(p1);
148 assertEquals(2, testBooks.size());
149 assertEquals(1, testBooks.indexOf(b2));
150
151 }
152
153 public void testToString() {
154 setup();
155 addItems();
156 assertEquals("Test: 2 books; 2 people.",
157 ml.toString());
158 }
159
160
161 }
*******************************************************************************************
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
50 public boolean checkOut(Book b1, Person p1) {
51 int booksOut = this.getBooksForPerson(p1).size();
52 if ((b1.getPerson() == null) &&
53 (booksOut < p1.getMaximumBooks())) {
54 b1.setPerson(p1);
55 return true;
56 }
57 else {
58 return false;
59 }
60 }
61
62 public boolean checkIn(Book b1) {
63 if (b1.getPerson() != null) {
64 b1.setPerson(null);
65 return true;
66 }
67 else {
68 return false;
69 }
70 }
71
72 public ArrayList<Book> getBooksForPerson(Person p1) {
73 ArrayList<Book> result = new ArrayList<Book>();
74 for (Book aBook : this.getBooks()) {
75 if (aBook.getPerson() != null &&
76 (aBook.getPerson().getName().equals(p1.getName()))) {
77 result.add(aBook);
78 }
79
80 }
81 return result;
82 }
83
84 public ArrayList<Book> getAvailableBooks() {
85 ArrayList<Book> result = new ArrayList<Book>();
86 for (Book aBook : this.getBooks()) {
87 if (aBook.getPerson() == null) {
88 result.add(aBook);
89 }
90
91 }
92 return result;
93 }
94
95 public ArrayList<Book> getUnavailableBooks(Person p1) {
96 ArrayList<Book> result = new ArrayList<Book>();
97 for (Book aBook : this.getBooks()) {
98 if (aBook.getPerson() != null) {
99 result.add(aBook);
100 }
101
102 }
103 return result;
104 }
105
106 public String toString() {
107 return this.getName() + ": " +
108 this.getBooks().size() + " books; " +
109 this.getPeople().size() + " people.";
110 }
111 }
******************************************************************************************
1 package org.totalbeginner.tutorial;
2
3 import org.totoalbeginner.tutorial.Person;
4
5 import junit.framework.TestCase;
6
7 public class BookTest extends TestCase {
8
9 public void testBook() {
10 Book b1 = new Book("Great Expectations");
11 assertEquals("Great Expectations", b1.title);
12 assertEquals("unknown author", b1.author);
13 }
14
15 public void testGetPerson() {
16 Book b2 = new Book("War and Peace");
17 Person p2 = new Person();
18 p2.setName("Elvis");
19
20 // method to say book is loaded to this person
21 b2.setPerson(p2);
22
23 // get the name of the person who has the book
24 // Person testPerson = b2.getPerson();
25 // String testName = testPerson.getName();
26
27 String testName = b2.getPerson().getName();
28 assertEquals("Elvis", testName);
29 }
30
31 public void testToString() {
32 Book b2 = new Book("War and Peace");
33 Person p2 = new Person();
34 p2.setName("Elvis");
35
36 assertEquals("War and Peace by unknown author; Available",
37 b2.toString());
38
39 b2.setPerson(p2);
40 assertEquals("War and Peace by unknown author; Checked out to Elvis",
41 b2.toString());
42 }
43 }
******************************************************************************************
1 package org.totalbeginner.tutorial;
2
3 import org.totoalbeginner.tutorial.Person;
4
5 public class Book {
6
7 String title;
8 String author;
9 Person person;
10
11 public Book(String string) {
12 this.title = string;
13 this.author = "unknown author";
14 }
15
16 public String getAuthor() {
17 return author;
18 }
19
20 public void setAuthor(String author) {
21 this.author = author;
22 }
23
24 public String getTitle() {
25 return title;
26 }
27
28 public void setPerson(Person p2) {
29 this.person = p2;
30
31 }
32
33 public Person getPerson() {
34
35 return this.person;
36 }
37
38 public String toString() {
39 String available;
40 if (this.getPerson() == null) {
41 available = "Available";
42 }
43 else {
44 available = "Checked out to " +
45 this.getPerson().getName();
46 }
47 return this.getTitle() + " by " + this.getAuthor() +
48 "; " + available;
49 }
50
51 }
