软件测试技术-第七题

(A)控制流图

(B)

在if(isDivisible(primes[i],curPrime))里设置一个错误，即可使t2比t1更容易发现。

(C)

t＝(n＝1)

(D)

节点覆盖：

{0,1,2,3,4,5,6,7,8,9,10,11,12}

边覆盖：

{(0,1),(1,2),(1,9),(2,3),(3,4),(3,7),(4,5),(4,6),(5,3),(6,7)

,(7,8),(7,1),(8,1),(9,10),(10,11),(10,12),(11,10)}

主路径：

{(0,1,2,3,4,5),

(0,1,2,3,4,5,7,8),

(0,1,2,3,7,8),

(0,1,9,10,11),

(0,1,9,10,12),

(3,4,5,3),

(4,5,3,4),

(5,3,4,5),

(5,3,4,6,7,8,1,2),

(5,3,4,6,7,8,1,9,10,11),

(5,3,4,6,7,8,1,9,10,12),

(5,3,7,8,1,2),

(5,3,7,8,1,9,10,11),

(5,3,7,8,1,9,10,12),

(10,11,10),

(11,10,11)}

 二、实现一个主路径覆盖

测试方法

    public static String whatIsTriangle(double a,double b, double c){
        
        if(a <= 0 || b <= 0 || c <= 0)            
            return "wrong";    
        
        if(a + b > c && a + c > b && b + c > a){        
    
            if(a == b && a ==c)            
                return "equilateral";        
            else if(a==b || a==c || b==c)            
                return "isosceles";        
            else            
                return "scalene";
        }
        else{
            return "wrong";
        }
    }

控制流图

主路径：

{(1,3),(1,2,5),(1,2,4,6),(1,2,4,7),(1,2,4,8)}

测试用例：

@RunWith(Parameterized.class)
public class TestTriangle1 {
    private double input1;
    private double input2;
    private double input3;
    private String expected;
    
    public TestTriangle1(double input1,double input2,double input3,String expected){
        this.input1 = input1;
        this.input2 = input2;
        this.input3 = input3;
        this.expected = expected;
    }
    
@Parameters
public static Collection<Object[]> getData(){
    return Arrays.asList(new Object[][]{
        {3,3,3,"equilateral"},
        {3,4,3,"isosceles"},
        {3,4,5,"scalene"},
        {0,0,0,"wrong"},
        {1,3,4,"wrong"}
    });
} 

@Test
public void test(){
    assertEquals(this.expected,Triangle.whatIsTriangle(input1,input2,input3));
}

}

覆盖结果：