软件测试习题七

(A)控制流图

(B)

在if(isDivisible(primes[i],curPrime))里去掉isPrime=false，即可使t2比t1更容易发现。

(C)

t＝(n＝1)

(D)

节点覆盖：

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

边覆盖：

{(1,2),(2,10),(2,3),(3,4),(4,5),(5,6),(6,4),(4,8),(5,7)

,(7,8),(8,2),(8,9),(9,2),(10,11),(10,12),(11,10)}

主路径：

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

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：

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

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：