For each of methods specified in the UnitTestingHomework interface, create a sufficient number of test cases using JUnit5. You must assume the implementation uses a class called TestingHomeworkImpl. The constructor has no parameters. The class has no variables. None of the methods use checked exceptions.

package homework.testing; /**  * This interface specifies a number of methods for which you need to create a sufficient test suite.  *  *  */ public interface UnitTestingHomework { /**  * Sqrt.  *  * @param n the radicand  * @return the square root of the radicant  */  double sqrt (int n); /**  * Sqr.  *  * @param n the factor  * @return the product of the factor times itself  */  int sqr (int n); /**  * Factorial.  *  * @param n the largest factor to consider  * @return n!  */  int factorial (int n); /**  * Produces the sum from 0 to n.  *  * @param n the largest addend  * @return the sum  */  int sumUp(int n); /**  * Simple function that adds two numbers together.  *  * @param x the first addend  * @param y the second addend  * @return the sum of x and y  */  int simpleFunctionXplusY(int x, int y); /**  * Despacer. Replace multiple contiguous spaces with a single space  *  * @param inputText the input text  * @return the string with only single spaces in it  */  String despacer(String inputText); }