package demo;

public class CalculatorExample {

/** * This method adds two integers and provide the results as a return * * @param a * @param b * @return The return value is the sum of the two numbers. */ public int add(int a, int b) { return a + b; }

/** * This method subtracts two integers and provide the results as a return * * @param a * @param b * @return The return value is the subtraction of the two numbers. */ public int subtract(int a, int b) { return a - b; }

/** * This method multiplies two integers and provide the results as a return * * @param a * @param b * @return The return value is the multiplication of the two numbers. */ public int multiply(int a, int b) { return a * b; }

/** * This method divides two integers and provide the results as a return * * @param a * @param b * @return The return value is the division of the two numbers. */ public int divide(int a, int b) { return a / b; }

/** * This method will sum the numbers from n down to 0. * * @param start * This is the start value. * @return The return ill be the summation of all the numbers. */ public int summation(int start) { int retVal = 0; while (start >= 1) { retVal += start; start--; } return retVal; }

/** * The method will determine if a number is positive or not. * * @param number * @return */ public boolean isPostive(int number) { return number >= 0; }

/** * This method will compare two numbers * * @param a * @param b * @return 0 if a ==b, 1 if a >b, -1 if a b) { retVal = 1; } else if (a

return retVal;

}

}

Consider the PIT mutation tool. Apply PIT to the "CalculatorExample.java" program and generate tests to kill the PIT mutants. Your tests should be as close to mutation-adequate as you can make them. That means you should be able to justify unkilled mutants in your report. Note: This tool is aimed at practicing developers, so it is relatively easy to deal with. Required Deliverables: 1) A class named "CalculatorTest that include all of your designed test cases. 2) A report document that contains the statistics generated by the PIT tool (just copy them). Also, the report should include a justification for live mutants that exist after executing your designed test cases. Submission Deadline: 01/01/2022 23:55 PM No submission will be accepted after 01/01/2022 at 23:55 PM. No excuse will be given under any circumstances. No extensions will be given, so plan to submit on time. Important note: Corrupted files will get a zero grade. It is your own responsibility to check that the uploaded file is readable. You should deliver a working code. A code with compilation errors will get a zero. Submitting your code as a pdf or document file will result in a grade of zero. You should submit a java files