Java程序测试 打折与满减

TaoRL

试题2、根据题目描述，编写Java代码完成测试。

本题分值：20分

考核时间：30分钟

考核方式：实操

考核内容：现Casher类中有compute函数用来计算商品价格并根据情况打折和优惠。代码如下：

1. public class Casher {
   
2.     public double compute(int count, double price) {
   
3.         double totalPrice = 0.0;
   
4.         if (count <= 1) {
   
5.             totalPrice = count * price;
   
6.         } else if (count <= 5) {
   
7.             totalPrice = count * price * 0.95;
   
8.         } else if (count <= 10) {
   
9.             totalPrice = count * price * 0.85;
   
10.         } else {
    
11.             totalPrice = count * price * 0.8;
    
12.         }
    
13. 
    
14.         totalPrice -= Math.floor(totalPrice / 300) * 30;
    
15.         return totalPrice;
    
16.     }
    
17. }

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1. import org.junit.Test;
   
2. 
   
3. import static org.junit.Assert.*;
   
4. 
   
5. public class CasherTest {
   
6.     Casher casher = new Casher();
   
7.     //测试无折扣
   
8.     @Test
   
9.     public void testNo() {
   
10.         assertEquals(100,casher.compute(1,100),0.01);
    
11.         assertEquals(0,casher.compute(0,100),0.01);
    
12.     }
    
13. 
    
14.     //测试95折
    
15.     @Test
    
16.     public void test95() {
    
17.         assertEquals(190,casher.compute(2,100),0.01);
    
18.         assertEquals(285,casher.compute(3,100),0.01);
    
19.         assertEquals(350,casher.compute(4,100),0.01);//此时满一个300减一个30
    
20.         assertEquals(445,casher.compute(5,100),0.01);
    
21.     }
    
22. 
    
23.     //测试85折
    
24.     @Test
    
25.     public void test85() {
    
26.         assertEquals(480,casher.compute(6,100),0.01);
    
27.         assertEquals(565,casher.compute(7,100),0.01);
    
28.         assertEquals(620,casher.compute(8,100),0.01);//此时满两个300减两个30
    
29.         assertEquals(705,casher.compute(9,100),0.01);
    
30.         assertEquals(790,casher.compute(10,100),0.01);
    
31.     }
    
32. 
    
33.     //测试8折
    
34.     @Test
    
35.     public void test8() {
    
36.         assertEquals(820,casher.compute(11,100),0.01);
    
37.         assertEquals(870,casher.compute(12,100),0.01);//此时满三个300减三个30
    
38.     }
    
39. 
    
40.     //测试满300减30
    
41.     @Test
    
42.     public void test300() {
    
43.         assertEquals(350,casher.compute(4,100),0.01);
    
44.         assertEquals(620,casher.compute(8,100),0.01);
    
45.         assertEquals(870,casher.compute(12,100),0.01);
    
46.     }
    
47. }

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