BAEL-1250 Initializing Arrays in Java

core-java/src/test/java/com/baeldung/array/ArrayInitializerTest.java

@@ -0,0 +1,48 @@
+package com.baeldung.array;
+
+import static com.baeldung.array.ArrayInitializer.initializeArrayAtTimeOfDeclarationMethod1;
+import static com.baeldung.array.ArrayInitializer.initializeArrayAtTimeOfDeclarationMethod2;
+import static com.baeldung.array.ArrayInitializer.initializeArrayAtTimeOfDeclarationMethod3;
+import static com.baeldung.array.ArrayInitializer.initializeArrayInLoop;
+import static com.baeldung.array.ArrayInitializer.initializeArrayRangeUsingArraysFill;
+import static com.baeldung.array.ArrayInitializer.initializeArrayUsingArraysFill;
+import static com.baeldung.array.ArrayInitializer.initializeMultiDimensionalArrayInLoop;
+import static org.junit.Assert.assertArrayEquals;
+
+import org.junit.Test;
+
+public class ArrayInitializerTest {
+
+    @Test
+    public void whenInitializeArrayInLoop_thenCorrect() {
+        assertArrayEquals(new int[] { 2, 3, 4, 5, 6 }, initializeArrayInLoop());
+    }
+
+    @Test
+    public void whenInitializeMultiDimensionalArrayInLoop_thenCorrect() {
+        assertArrayEquals(new int[][] { { 1, 2, 3, 4, 5 }, { 1, 2, 3, 4, 5 } }, initializeMultiDimensionalArrayInLoop());
+    }
+
+    @Test
+    public void whenInitializeArrayAtTimeOfDeclarationMethod1_thenCorrect() {
+        assertArrayEquals(new String[] { "Toyota", "Mercedes", "BMW", "Volkswagen", "Skoda" }, initializeArrayAtTimeOfDeclarationMethod1());
+    }
+
+    @Test
+    public void whenInitializeArrayAtTimeOfDeclarationMethod2_thenCorrect() {
+        assertArrayEquals(new int[] { 1, 2, 3, 4, 5 }, initializeArrayAtTimeOfDeclarationMethod2());
+    }
+
+    @Test
+    public void whenInitializeArrayAtTimeOfDeclarationMethod3_thenCorrect() {
+        assertArrayEquals(new int[] { 1, 2, 3, 4, 5 }, initializeArrayAtTimeOfDeclarationMethod3());
+    }
+
+    public void whenInitializeArrayUsingArraysFill_thenCorrect() {
+        assertArrayEquals(new long[] { 30, 30, 30, 30, 30 }, initializeArrayUsingArraysFill());
+    }
+
+    public void whenInitializeArrayRangeUsingArraysFill() {
+        assertArrayEquals(new int[] { -50, -50, -50, 0, 0 }, initializeArrayRangeUsingArraysFill());
+    }
+}