Unit Test created and Classes created

src/test/java/CoinsTest.java

@@ -0,0 +1,62 @@
+import static org.hamcrest.CoreMatchers.allOf;
+import static org.hamcrest.CoreMatchers.anyOf;
+import static org.hamcrest.CoreMatchers.hasItems;
+import static org.hamcrest.CoreMatchers.not;
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+
+public class CoinsTest {
+
+    @Test
+    public void test_getCoinAmount(){
+        Coins coin = new Coins(10);
+        assertTrue("Fehler getCoinAmmount ist negativ",coin.getCoinAmount() >= 0);
+    }
+
+    @Test
+    public void test_addCoinException(){
+        try {
+            Coins coin = new Coins(10);
+            coin.addCoin(-10);
+            fail("Erwartet NegativAmountException - addCoin");
+        }catch (NegativAmountException negativAmountException) {
+            assertThat(negativAmountException.getMessage(), is("negativAmountException"));
+        }
+    }
+
+    @Test
+    public void test_removeCoinException(){
+        try {
+            Coins coin = new Coins(10);
+            coin.removeCoin(-10);
+            fail("Erwartet NegativAmountException - removeCoin");
+        }catch (NegativAmountException negativAmountException) {
+            assertThat(negativAmountException.getMessage(), is("negativAmountException"));
+        }
+    }
+
+    @Test
+    public void test_removeCoin(){
+            Coins coin = new Coins(10);
+        try {
+            assertTrue(coin.removeCoin(10));
+        } catch (NegativAmountException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void test_changeCoinAmount_true(){
+        Coins coin = new Coins(10);
+        assertTrue(coin.changeCoinAmmount(-10));
+    }
+
+    @Test
+    public void test_changeCoinAmount_false(){
+        Coins coin = new Coins(9);
+        assertFalse(coin.changeCoinAmmount(-10));
+    }
+}