From 22ad2b88a8d02dd92316f159e4d31656a4aa922b Mon Sep 17 00:00:00 2001
From: vaibhav007jain <72961247+vaibhav007jain@users.noreply.github.com>
Date: Sat, 4 Nov 2023 11:02:23 +0530
Subject: [PATCH] Bael-7075: Initial Commit (#15053)

* Create VectorOperations.java

BAEL-7075: Initial Commit

* BAEL-7075: Create VectorOperationsUnitTest.java

* Delete core-java-modules/core-java-collections-5/src/main/java/com/baeldung/vectors/VectorOperations.java

* Update VectorOperationsUnitTest.java

* Update VectorOperationsUnitTest.java - Added one more test case
---
 .../vectors/VectorOperationsUnitTest.java     | 87 +++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 core-java-modules/core-java-collections-5/src/test/java/com/baeldung/vectors/VectorOperationsUnitTest.java

diff --git a/core-java-modules/core-java-collections-5/src/test/java/com/baeldung/vectors/VectorOperationsUnitTest.java b/core-java-modules/core-java-collections-5/src/test/java/com/baeldung/vectors/VectorOperationsUnitTest.java
new file mode 100644
index 0000000000..c948ce2481
--- /dev/null
+++ b/core-java-modules/core-java-collections-5/src/test/java/com/baeldung/vectors/VectorOperationsUnitTest.java
@@ -0,0 +1,87 @@
+package com.baeldung.vectors;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Vector;
+
+import org.junit.Test;
+
+public class VectorOperationsUnitTest {
+
+    private static Vector<String> getVector() {
+        Vector<String> vector = new Vector<String>();
+        vector.add("Today");
+        vector.add("is");
+        vector.add("a");
+        vector.add("great");
+        vector.add("day!");
+
+        return vector;
+    }
+
+    @Test
+    public void givenAVector_whenAddElementsUsingAddMethod_thenElementsGetAddedAtEnd() {
+        Vector<String> vector = getVector();
+        vector.add("Hello");
+        assertEquals(6, vector.size());
+    }
+
+    @Test
+    public void givenAVector_whenUpdateElementAtIndex_thenElementAtIndexGetsUpdated() {
+        Vector<String> vector = getVector();
+        assertEquals(5, vector.size());
+        assertEquals("great", vector.get(3));
+        vector.set(3, "good");
+        assertEquals("good", vector.get(3));
+    }
+
+    @Test
+    public void givenAVector_whenRemoveAnElement_thenElementGetsRemovedFromTheVector() {
+        Vector<String> vector = getVector();
+        assertEquals(5, vector.size());
+
+        // remove a specific element
+        vector.remove("a");
+        assertEquals(4, vector.size());
+
+        // remove at specific index
+        vector.remove(2);
+        assertEquals("day!", vector.get(2));
+        assertEquals(3, vector.size());
+
+        assertEquals(false, vector.remove("SomethingThatDoesn'tExist"));
+    }
+
+    @Test(expected = ArrayIndexOutOfBoundsException.class)
+    public void givenAVector_whenIndexIsBeyondRange_thenRemoveMethodThrowsArrayIndexOutOfBoundsException() {
+        Vector<String> vector = getVector();
+        assertEquals(5, vector.size());
+        vector.remove(10);
+    }
+
+    @Test
+    public void givenAVector_whenGetElementWithinARange_thenGetMethodGetsAnElementFromTheVector() {
+        Vector<String> vector = getVector();
+        String fourthElement = vector.get(3);
+        assertEquals("great", fourthElement);
+    }
+
+    @Test(expected = ArrayIndexOutOfBoundsException.class)
+    public void givenAVector_whenGetElementBeyondARange_thenGetMethodThrowsArrayIndexOutOfBoundsException() {
+        Vector<String> vector = getVector();
+        assertEquals(5, vector.size());
+        vector.get(10);
+    }
+
+    @Test
+    public void givenAVector_whenAddElementFromACollection_thenAllElementsGetAdeddToTheVector() {
+        Vector<String> vector = getVector();
+        assertEquals(5, vector.size());
+        ArrayList<String> words = new ArrayList<>(Arrays.asList("Baeldung", "is", "cool!"));
+        vector.addAll(words);
+        assertEquals(8, vector.size());
+        assertEquals("cool!", vector.get(7));
+    }
+}