import org.junit.Test;

public class IntegerReverseTest {

IntegerReverse solver = new IntegerReverse();

@Test

public void test1(){

int num = -123;

while (num!=0) {

int mod = num%10;

num /= 10;

System.out.println(mod+", "+num);

/**

* -3, -12

* -2, -1

* -1, 0

*/

}

}

@Test

public void test2(){

int x = 123;

int res = solver.reverse(x);

System.out.println(x);

}

@Test

public void test3(){

int x = -123;

int res = solver.reverse(x);

System.out.println(res);

// -321

}

@Test

public void test4(){

int x = 120;

int res = solver.reverse(x);

System.out.println(res);

// 21

}

@Test

public void test5(){

int x = 0;

int res = solver.reverse(x);

System.out.println(res);

// 0

}

}