20155212 2017.05.17课堂代码实践总结

Junit

在IDEA中对P145 MathTool.java 使用JUnit进行单元测试，测试用例不少于三个，要包含正常情况，边界情况。

代码

/** * Created by radish608 on 17-5-17. */import org.junit.Test;public class MathToolTest {    @Test    public void  MathToolTester(){        assert MathTool.sum(1,2,3) == 6 : "error1";        assert MathTool.sum(0) == 0 : "error2";        assert MathTool.sum(1) == 1 : "error3";        assert MathTool.sum(1,-1) == 0 : "error4";        assert MathTool.sum(-1,-1) == -2 : "error5";    }}

运行截图

构建对象

设计并实现一个Book类，定义成Book.java,Book包含书名，作者，出版社和出版日期，这些数据都要定义getter和setter。定义至少三个构造方法，接收并初始化这些数据。覆盖（Override）toString方法，返回良好的含有多行的书的描述信息。覆盖equals方法，书名，作者，出版社和出版日期完全一致才说明两本书是一样的。创建一个测试类Bookshelf, 其中的main方法创建并更新几个Book对象。Book至少包含三本本学期教材内容。

创建一个测试类Bookshelf,其中的main方法创建并更新几个Book对象。Book至少包含三本本学期教材内容。

代码

/** * Created by radish608 on 17-5-17. */class Book {    String name, editor, publisher;    int date;    public Book(String name, String editor, String publisher, int date) {        this.name = name;        this.editor = editor;        this.publisher = publisher;        this.date = date;    }    public void setName() {        this.name = name;    }    public void setEditor(String editor) {        this.editor = editor;    }    public void setPublisher(String publisher) {        this.publisher = publisher;    }    public void setDate(int date) {        this.date = date;    }    public String getName() {        return this.name;    }    public String getEditor() {        return this.editor;    }    public String getPublisher() {        return this.publisher;    }    public int getDate() {        return this.date;    }    @Override    public String toString() {        return "Book20155212 [书名=" + name + ", 作者=" + editor + ", 出版社=" + publisher + ", 出版日期=" + date + "]";    }    @Override    public boolean equals(Object obj) {        if (!(obj instanceof Book)) {            return false;        }        Book book = (Book) obj;        if (!getName().equals(book.getName())) {            return false;        }        if (!getEditor().equals(book.getEditor())) {            return false;        }        if (!getPublisher().equals(book.getPublisher())) {            return false;        }        if (!(getDate() == book.getDate())) {            return false;        }        return true;    }}public class Bookshelf {    public static void main(String[] args) {        Book book1 = new Book("Java学习笔记", "林信良", "清华大学出版社", 2016);        Book book2 = new Book("密码学", "郑秀林", "金城出版社", 2016);        Book book3 = new Book("数据结构与算法", "张乃孝", "高等教育出版社", 2015);        System.out.println(book1.toString());        System.out.println(book2.toString());        System.out.println(book3.toString());        System.out.println(book1.equals(book2));    }}