NEED HELP I NEED THE Method thoroughly tested in a JUnit test file with at least three assert methods

CODE

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import java.util.*;

public class WorkoutPlanner {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

System.out.println("Welcome to WorkoutPlanner! Let's create your workout plan.");

// get user input

System.out.print("Enter the name of the exercise: ");

String exerciseName = input.nextLine();

System.out.print("Enter the number of sets: ");

int numSets = input.nextInt();

System.out.print("Enter the number of reps per set: ");

int numReps = input.nextInt();

System.out.print("Enter the day you want to schedule this workout (1-7, where 1 is Monday): ");

int workoutDay = input.nextInt();

// modify user input

String formattedExerciseName = exerciseName.substring(0,1).toUpperCase() + exerciseName.substring(1).toLowerCase();

// if statement

if (numReps <= 0 || numSets <= 0) {

System.out.println("Invalid input! Please enter a positive integer for sets and reps.");

System.exit(0);

}

// arithmetic operation

int totalReps = numSets * numReps;

// loop

for (int i = 1; i <= numSets; i++) {

System.out.println("Set " + i + " - Do " + numReps + " reps of " + formattedExerciseName);

}

// method

displayWorkoutPlan(workoutDay, formattedExerciseName, numSets, numReps);

System.out.println("Your total number of reps for this exercise is " + totalReps);

}

// method definition

public static void displayWorkoutPlan(int day, String exercise, int sets, int reps) {

System.out.println("Your workout plan for day " + day + " is: ");

System.out.println(sets + " sets of " + reps + " reps of " + exercise);

}

}