feat:lesson_16 Coins and CoinTest files added

Author: txtran224

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/Coins.Java

@@ -0,0 +1,25 @@
+package com.codedifferently.Coins;
+
+    //class
+public class Coins {
+
+public enum CoinType{
+    penny, nickel, dime, quarter
+}
+  private int coinValue;    
+  private boolean coinIsRare;
+  private double coinGramWeight;
+  private int coinAge;
+  private Arraylist<Coins> coincollection;
+
+    //constructor
+public Coins(CoinType coinType, int coinValue, Boolean coinIsRare, Double coinGramWeight) {
+    this.coinType = coinType;
+    this.coinValue = coinValue;
+    this.coinIsRare = coinIsRare;
+    this.coinGramWeight = coinGramWeight;
+    this.coinAge = coinAge;
+    this.coincollection = coinCollection;
+  }
+}
+// for loop for coin collection and check if rare add to collection

lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/CoinsTest.Java

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+package com.codedifferently.lesson16;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class CoinTest{
+
+@test 
+void testCheckCoininPocket(){
+//arrange
+Coins coin = new Coin(to fill in);
+
+//act action
+CoinType actualCoin = CoinType.nickel;   
+
+//assert
+assertEquals(nickel,coins.checkCoinType())
+}
+@test 
+void testWeighCoins(){
+//arrange
+Coins coin = new Coin(to fill in);
+double expectedWeight = 5.0;
+//act
+double coinWeight = coin.coinGramWeight();
+//assert
+assertEquals(expected, coinweight);
+}
+@test 
+void testConvertCoins(){
+//arrange
+coinCollection = new Arraylist<>();
+Coin nickel1 = new coin();
+Coin nickel2 = new coin();
+coinCollection.add(nickel1);
+coinCollection.add(nickel2);
+
+//act
+Coin Dime = Coin.convertNickelsToDime();
+//assert
+Assert(10, Dime.getValue())
+}
+@Test 
+void testCollectCoins(){
+//arrange
+coinCollection = new Arraylist<>();
+Coin penny = new coin();
+Coin nickel = new coin();
+Coin dime = new coin ();
+add coins to coin collection
+//act
+AddCoin(penny);
+AddCoin(nickel);
+AddCoin(dime);
+//assert
+AssertEquals(3,coinCollection());
+}
+@test
+void testGetAgeCoin(){
+//arrange
+    Coin coin = new coin();
+// Act
+    int age = coin.geCoinAge();
+// Assert
+    assertEquals(1954, actual);
+  }
+}