src/Test/Java/BinsTest.java

+import Williams.Steffon.Bins;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+
+public class BinsTest {
+
+    @Test
+
+    public void constructorTest() {
+       // Given
+        Bins bin = new Bins(2,12);
+        // When
+        Integer actual = bin.bins.get(12);
+
+        //Then
+        Assert.assertTrue(actual == 0);
+    }
+
+
+}

src/Test/Java/Steffon/Williams/DiceTest.java

+package Steffon.Williams;
+
+import Williams.Steffon.Dice;
+import org.junit.jupiter.api.Test;
+import org.junit.Assert;
+
+public class DiceTest {
+
+    @Test
+    public void getNumberOfDiceTest(){
+        //Given
+        Dice dice = new Dice(2);
+        //
+         Integer expected = 2;
+         Integer actual = dice.getNumberOfDice();
+
+         Assert.assertEquals(expected,actual);
+
+    }
+
+    @Test
+    public void tossAndSumTest() {
+        //Given
+        Dice dice = new Dice(2);
+        //
+        Integer actual = dice.tossAndSum();
+
+        Assert.assertTrue( actual >=2 && actual <= 12);
+
+
+
+    }
+
+
+}

src/Test/Java/Steffon/Williams/DieTest.java

+package Steffon.Williams;
+
+import Williams.Steffon.Die;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class DieTest {
+
+    @Test
+    public void rollTest(){
+    // Given
+    Die die = new Die();
+    //When
+    Integer actual = die.roll();
+    //Then
+    Assert.assertTrue(actual >= 1 && actual <= 6);
+    }
+
+@Test
+public void roll20Test (){
+        //Given
+    Die die = new Die();
+    // When
+    Integer actual = die.roll();
+    // Then
+    Assert.assertTrue(actual >= 1 && actual <= 20);
+
+}
+
+}

src/main/java/Bins.java

-
-public class Bins {
-
-}

src/main/java/Dice.java

-public class Dice {
-
-
-}

src/main/java/Simulation.java

-public class Simulation {
-
-
-
-}

src/main/java/Williams/Steffon/Bins.java

+package Williams.Steffon;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Bins {
+
+    HashMap<Integer,Integer> bins;
+
+
+    public Bins(int min, int max){
+        bins = new  HashMap<Integer,Integer>();
+        initializeBins(min, max);
+    }
+    private void initializeBins(Integer min, Integer max){
+
+        for(int i = min; i <= max; i++) {
+            bins.put(i,0);
+        }
+
+    }
+    public void trackToss(int tossSum) {
+       bins.put(tossSum, bins.get(tossSum)+1);
+
+    }
+
+
+
+}

src/main/java/Williams/Steffon/Dice.java

+package Williams.Steffon;
+
+import java.util.ArrayList;
+
+public class Dice {
+    ArrayList<Die> dice;
+
+    public Dice (Integer number){
+       dice = new ArrayList<Die>();
+       initializeDice(number);
+
+    }
+
+    private void initializeDice(Integer number){
+        for(int i = 0; i < number; i++) {
+            Die die = new Die();
+            dice.add(die);
+        }
+
+
+    }
+
+    public Integer getNumberOfDice(){
+
+        return dice.size();
+    }
+
+    public Integer tossAndSum() {
+        Integer sum = 0;
+
+for (Die die : dice) {
+    sum += die.roll();
+}
+return sum;
+
+    }
+}

src/main/java/Williams/Steffon/Die.java

+package Williams.Steffon;
+
+import java.util.Random;
+
+public class Die {
+
+    int sides;
+
+
+    public Die(int sides) {
+        this.sides = sides;
+
+    }
+
+    public Die( ){
+      this(6);
+
+    }
+
+    public Integer roll (){
+        Random random = new Random();
+        return random.nextInt(6)+ 1;
+    }
+}

src/main/java/Williams/Steffon/Simulation.java

+package Williams.Steffon;
+
+public class Simulation {
+
+    int numberOfDies;
+    int numberOfTosses;
+
+    public Simulation(int numberOfDices, int numberOfTosses){
+      this.numberOfDies = numberOfDies;
+      this.numberOfTosses = numberOfTosses;
+
+    }
+   // public void runSimulation()
+
+   // Simulation sim = new Simulation(2, 10000);
+
+//sim.runSimulation();
+
+//sim.printResults();
+
+    //numberOfDies to throw
+    //numberOfTosses to run
+
+
+
+}

src/main/java/Williams/Steffon/SimulationTest.java

+package Williams.Steffon;
+
+import org.junit.jupiter.api.Test;
+
+public class SimulationTest {
+
+    @Test
+    public void runSimulation(){
+        //Given
+        Die die = new Die;
+        //When
+
+        //This
+
+    }
+}