BAEL-2770 Fixed code formatting and improved test cases

Author: sskoli95

Diff for: core-java-arrays/src/main/java/com/baeldung/array/AddElementToEndOfArray.java

@@ -8,7 +8,7 @@ public class AddElementToEndOfArray {
     public Integer[] addElementUsingArraysCopyOf(Integer[] srcArray, int elementToAdd) {
         Integer[] destArray = Arrays.copyOf(srcArray, srcArray.length + 1);
 
-        destArray[destArray.length-1] = elementToAdd;
+        destArray[destArray.length - 1] = elementToAdd;
         return destArray;
     }
 
@@ -26,9 +26,9 @@ public Integer[] addElementUsingSystemArrayCopy(Integer[] srcArray, int elementT
 
         System.arraycopy(srcArray, 0, destArray, 0, srcArray.length);
 
-        destArray[destArray.length-1] = elementToAdd;
+        destArray[destArray.length - 1] = elementToAdd;
 
         return destArray;
     }
 
-}
+}

Diff for: core-java-arrays/src/test/java/com/baeldung/array/AddElementToEndOfArrayUnitTest.java

@@ -3,44 +3,47 @@
 import org.junit.Before;
 import org.junit.Test;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertArrayEquals;
 
 public class AddElementToEndOfArrayUnitTest {
 
     AddElementToEndOfArray addElementToEndOfArray;
 
     @Before
-    public void init(){
+    public void init() {
         addElementToEndOfArray = new AddElementToEndOfArray();
     }
 
     @Test
-    public void givenSourceArrayAndElement_whenAddElementUsingArraysCopyIsInvoked_thenNewElementMustBeAdded(){
-        Integer[] sourceArray = {1,2,3,4};
+    public void givenSourceArrayAndElement_whenAddElementUsingArraysCopyIsInvoked_thenNewElementMustBeAdded() {
+        Integer[] sourceArray = {1, 2, 3, 4};
         int elementToAdd = 5;
 
         Integer[] destArray = addElementToEndOfArray.addElementUsingArraysCopyOf(sourceArray, elementToAdd);
 
-        assertEquals(elementToAdd, destArray[destArray.length-1].intValue());
+        Integer[] expectedArray = {1, 2, 3, 4, 5};
+        assertArrayEquals(expectedArray, destArray);
     }
 
     @Test
-    public void givenSourceArrayAndElement_whenAddElementUsingArrayListIsInvoked_thenNewElementMustBeAdded(){
-        Integer[] sourceArray = {1,2,3,4};
+    public void givenSourceArrayAndElement_whenAddElementUsingArrayListIsInvoked_thenNewElementMustBeAdded() {
+        Integer[] sourceArray = {1, 2, 3, 4};
         int elementToAdd = 5;
 
         Integer[] destArray = addElementToEndOfArray.addElementUsingArrayList(sourceArray, elementToAdd);
 
-        assertEquals(elementToAdd, destArray[destArray.length-1].intValue());
+        Integer[] expectedArray = {1, 2, 3, 4, 5};
+        assertArrayEquals(expectedArray, destArray);
     }
 
     @Test
-    public void givenSourceArrayAndElement_whenAddElementUsingSystemArrayCopyIsInvoked_thenNewElementMustBeAdded(){
-        Integer[] sourceArray = {1,2,3,4};
+    public void givenSourceArrayAndElement_whenAddElementUsingSystemArrayCopyIsInvoked_thenNewElementMustBeAdded() {
+        Integer[] sourceArray = {1, 2, 3, 4};
         int elementToAdd = 5;
 
         Integer[] destArray = addElementToEndOfArray.addElementUsingSystemArrayCopy(sourceArray, elementToAdd);
 
-        assertEquals(elementToAdd, destArray[destArray.length-1].intValue());
+        Integer[] expectedArray = {1, 2, 3, 4, 5};
+        assertArrayEquals(expectedArray, destArray);
     }
 }