20155212 2017.05.17课堂代码实践总结

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。

• 码云链接
• 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";
    }
}

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构建对象

1. 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。
2. 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。

• 码云链接
• 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));
    }
}

• 运行截图