BAEL-1250 Initializing Arrays in Java (#2811)

* Evaluation article: Different Types of Bean Injection in Spring * added tests & changed configuration to Java-based config * removed xml config files * rename unit tests * BAEL-972 - Apache Commons Text * remove code from evaluation article * remove code from evaluation article * BAEL-972 - Apache Commons Text - added another example * BAEL-972 - Apache Commons Text - just indentation * BAEL-994 - TemporalAdjuster in Java * BAEL-994 - TemporalAdjuster in Java * BAEL-994 - TemporalAdjuster in Java * BAEL-994 - TemporalAdjuster in Java * BAEL-994 - TemporalAdjuster in Java - fix problems * BAEL-1033 Introduction to StreamUtils * BAEL-1033 Introduction to StreamUtils * BAEL-1033 Introduction to StreamUtils * fix formatting * BAEL-1033 minor refactor * BAEL-1035 Introduction to Eclipse Collections * format * BAEL-1035 Introduction to Eclipse Collections * BAEL-1035 Introduction to Eclipse Collections * BAEL-1035 Introduction to Eclipse Collections * cleanup * cleanup * BAEL-1109 Introduction to JCache * BAEL-1109 Introduction to JCache * remove unneeded property in pom.xml * fix formatting * close cache instances properly * remove latest commit * BAEL-1057 Introduction to rxjava-jdbc * refactor rxjava-jdbc * Refactor rxjava-jdbc * Refactoring rxjava-jdbc * BAEL-1171 java.lang.String API * refactor rxjava-jdbc * refactor String * String API - move multiple classes into a single class * move class into test package * BAEL-1171 String.lang.String API * BAEL-1171 java.lang.String API * BAEL-1250 Initializing Arrays in Java * BAEL-1250 Initializing Arrays in Java
2017-10-24 18:47:40 +02:00
parent 5d39af398f
commit a5e2357033
2 changed files with 142 additions and 0 deletions
--- a/core-java/src/test/java/com/baeldung/array/ArrayInitializerTest.java
+++ b/core-java/src/test/java/com/baeldung/array/ArrayInitializerTest.java
@@ -0,0 +1,68 @@
+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.initializeArrayUsingArraysCopy;
+import static com.baeldung.array.ArrayInitializer.initializeArrayUsingArraysFill;
+import static com.baeldung.array.ArrayInitializer.initializeArrayUsingArraysSetAll;
+import static com.baeldung.array.ArrayInitializer.initializeLargerArrayUsingArraysCopy;
+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());
+    }
+
+    @Test
+    public void whenInitializeArrayUsingArraysFill_thenCorrect() {
+        assertArrayEquals(new long[] { 30, 30, 30, 30, 30 }, initializeArrayUsingArraysFill());
+    }
+
+    @Test
+    public void whenInitializeArrayRangeUsingArraysFill_thenCorrect() {
+        assertArrayEquals(new int[] { -50, -50, -50, 0, 0 }, initializeArrayRangeUsingArraysFill());
+    }
+
+    @Test
+    public void whenInitializeArrayRangeUsingArraysCopy_thenCorrect() {
+        assertArrayEquals(new int[] { 1, 2, 3, 4, 5 }, initializeArrayUsingArraysCopy());
+    }
+
+    @Test
+    public void whenInitializeLargerArrayRangeUsingArraysCopy_thenCorrect() {
+        assertArrayEquals(new int[] { 1, 2, 3, 4, 5, 0 }, initializeLargerArrayUsingArraysCopy());
+    }
+
+    @Test
+    public void whenInitializeLargerArrayRangeUsingArraysSetAll_thenCorrect() {
+        assertArrayEquals(new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, initializeArrayUsingArraysSetAll());
+    }
+}