软件测试技术 hw2

 

1. Identify the fault.

　　for循环的结束条件错误，少第一个元素，即:x[0]。

　　应该是：i >= 0。

 

2. If possible, identify a test case that does not execute the fault. (Reachability)

　　x = [],  y = 2;

 

3. If possible, identify a test case that executes the fault, but does not result in an error state.

　　x = [2,2,2],  y = 2;

 

4. If possible identify a test case that results in an error, but not a failure. 

　　x = [2,3,5],  y = 0;

 

 

 

1. Identify the fault.

　　查找数组的最后一个0， 应该从后向前遍历数组。 即： for ( int i = x.length; i >= 0; i-- )

　　
2. If possible, identify a test case that does not execute the fault. (Reachability)

　　 x = []; 

 

3. If possible, identify a test case that executes the fault, but does not result in an error state.

　　x = [1,2,3];

 

4. If possible identify a test case that results in an error, but not a failure.

 　　x = [1 , 0];