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  • 软件测试作业(四)

    题目所给出的代码为

     1 /******************************************************* 
     2      * Finds and prints n prime integers 
     3      * Jeff Offutt, Spring 2003 
     4      ******************************************************/ 
     5     public static void printPrimes (int n) 
     6     { 
     7         int curPrime; // Value currently considered for primeness 
     8         int numPrimes; // Number of primes found so far. 
     9         boolean isPrime; // Is curPrime prime? 
    10         int [] primes = new int [MAXPRIMES]; // The list of prime numbers. 
    11         
    12         // Initialize 2 into the list of primes. 
    13         primes [0] = 2; 
    14         numPrimes = 1; 
    15         curPrime = 2; 
    16         while (numPrimes < n) 
    17         { 
    18             curPrime++; // next number to consider ... 
    19             isPrime = true; 
    20             for (int i = 0; i <= numPrimes-1; i++) 
    21             { // for each previous prime. 
    22                 if (isDivisible(primes[i], curPrime)) 
    23                 { // Found a divisor, curPrime is not prime. 
    24                     isPrime = false; 
    25                     break; // out of loop through primes. 
    26                 } 
    27             } 
    28             if (isPrime) 
    29             { // save it! 
    30                 primes[numPrimes] = curPrime; 
    31                 numPrimes++; 
    32             } 
    33         } // End while 
    34         
    35         // Print all the primes out. 
    36         for (int i = 0; i <= numPrimes-1; i++) 
    37         { 
    38             System.out.println ("Prime: " + primes[i]); 
    39         } 
    40     } // end printPrimes

    (a):控制流图如下

    (b):将MAXPRIMES设为4,这样t2=(n=5)就会出现数组越界的错误,但t1=(n=3)无影响。

    (c):n=1的时候不满足numPrimes < n,故不经过while循环

    (d):点覆盖:{1,2,3,4,5,6,7,8,9,10,11,12,13,14}

    边覆盖:{(1,2),(2,3),(2,12),(3,4),(4,5),(5,6),(6,7),(6,8),(7,5),(8,9), (5,9),(9,10),(9,11),(10,11),(11,2),(12,13),(13,14),(14,15),(15,13), (13,16)}

    主路径覆盖:{(1,2,3,4,5,6,7),(1,2,3,4,5,6,8,9,10,11),(1,2,3,4,5,6,8,9,11),(1,2,3,4,5,9,10,11),(1,2,3,4,5,9,11),(1,2,12,13,14,15),(1,2,12,16),(3,4,5,6,8,9,10,11,2,12,13,14,15),

    (3,4,5,6,8,9,11,2,12,13,14,15),(3,4,5,6,8,9,10,11,2,12,13,16),(3,4,5,6,8,9,11,2,12,13,16),(3,4,5,9,10,11,2,12,13,14,15),(3,4,5,9,11,2,12,13,14,15),(3,4,5,9,10,11,2,12,13,16),

    (3,4,5,9,11,2,12,13,16),(6,7,5,9,10,11,2,12,13,14,15),(6,7,5,9,11,2,12,13,14,15),(6,7,5,9,10,11,2,12,13,16),(6,7,5,9,11,2,12,13,16),(14,15,13,16),(13,14,15,13),(5,6,7,5),

    (2,3,4,5,6,8,9,10,11,2),(2,3,4,5,6,8,9,11,2),(2,3,4,5,9,10,11,2),(2,3,4,5,9,11,2)}

    设计主路径覆盖的测试用例

    以上次实验的判断三角形为例

     1 package cn.tju.st;
     2 public class Calculate {
     3     public String triangle (int a, int b,int c)
     4     {
     5         String str;
     6         int d=a-b;
     7         int e=b-c;
     8         int f=a-c;
     9         if( d*e*f==0){
    10             str="等腰";
    11             if( (a==b) && (b==c) )
    12                 str="等边";
    13         }
    14         else
    15             str="其他";
    16         return str;
    17         
    18     }
    19 }
    package cn.tju.st;
    import org.junit.After;
    import org.junit.Before;
    import org.junit.Test;
    import static org.junit.Assert.*;
    import java.util.Arrays;
    import java.util.Collection;
    import org.junit.runner.RunWith;
    import org.junit.runners.Parameterized;
    import org.junit.runners.Parameterized.Parameters;
    
    @RunWith(Parameterized.class)
    public class CalculateTest {
        private String type;
        private int a;
        private int b;
        private int c;
        
        public CalculateTest(String type, int a, int b, int c){
            this.type = type;
            this.a = a;
            this.b = b;
            this.c = c;
        }
        @Before
        public void setUp() throws Exception {
            //System.out.println("This is before test");
        }
    
        @After
        public void tearDown() throws Exception {
            System.out.println("This is after test");
        }
        @Parameters
        public static Collection prepareData(){
            Object[][] object = {
                    {"等边",1,1,1},
                    {"等腰",2,2,3},
                    {"等腰",2,3,3},
                    {"其他",2,3,4}};
            return Arrays.asList(object);
        }
        @Test
        public void TestTypeOfTriangle() 
        {
            Calculate calc = new Calculate (); 
            assertEquals (type, calc.triangle(a,b,c)); 
        }
    }

    测试结果如下,已完成主路径覆盖

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  • 原文地址:https://www.cnblogs.com/tiny-home/p/5335371.html
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