Software Test Third Job

1. computes the greatest common divisor of an integer x and an integer y. (It is not allowed in the way that the classroom is used).

Use classes and methods (write a method for greatest common divisor), and name them according to the specification. In the main mode, get the two integers entered by the user, call the previously written method, and output their greatest common divisor. Use FindBugs to find out if a bug exists in the program.

Demo class

Package cn.wu.test;

Public class Demo {

/**

* @param args

*/

Public Static void Main (string[] args) {

TODO auto-generated measure stub

Measure s =new measure ();

S.index ();

}

}

Method class

Package cn.wu.test;

Public class Measure {

Public void Index () {

int a=48,b=90;

int min =math. min (A, B);

for (int k=min;k>0;k--) {

if (A%k==0 && b%k==0) {

System. The greatest common divisor of out. println (A + "and" +b+ "are:" +k ");

return;

}

}

}

}

2, the application of logic coverage

According to the program flowchart given, write out the Java code (implemented with classes and methods) to write out the statement overlay, the branch coverage of the test case, and the path it covers, using JUnit to write test cases to test.

L test Cases (statement overrides):

X	Y	Results	Path
3	2	Y+1=3 x=3	Abd
3	1	Not change	Abc
6	-1	X-y=7	Aeg
4	-1	X+y=3	Aef

L test Case (branch coverage):

X<4 or Y>0	X>5	Y>1	Case	Results	Path
T	F		X=3,y=1	Not change	Abc
T	T		x=3,y=2	Y+1=3 x=3	adb
F		F	X=6,y=-1	X-y=7	Aeg
F		T	X=4,y=-1	X+y=3	Aef

Package cn.wu.test;

Public class Measure {

Public void Tests () {

int x = 5,y = 6;

if (X<4 | | y>0) {

if (y>1) {

y=y+1;

System. out. println ("x result is:" +x);

System. out. println ("Y+1 results are:" +y);

}

Else {

System. out. println ("x result is:" +x);

System. out. println ("y result is:" +y);

}

}

Else {

if (x>=5) {

X=x-y;

System. out. println ("x-y results are:" +x);

}

Else {

X=x+y;

System. out. println ("X+y results are:" +x);

}

}

}

}

Package cn.wu.test;

Public class Demo {

/**

* @param args

*/

Public Static void Main (string[] args) {

TODO auto-generated measure stub

Measure s =new measure ();

S.tests ();

}

}

Software Test Third Job