From 4d7e5eb5c9a143afbe37833cb7a6296fd16b41b6 Mon Sep 17 00:00:00 2001
From: MohamedHelmyKassab
 <137485958+MohamedHelmyKassab@users.noreply.github.com>
Date: Mon, 6 Nov 2023 19:40:42 +0200
Subject: [PATCH] This commit is related to the article BAEL-6988 (#15149)

This commit aims to add a test class "HexToIntConversionUnitTest.java" that provides several ways to convert Hex string into int.
---
 .../hextoint/HexToIntConversionUnitTest.java  | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 core-java-modules/core-java-hex/test/java/com/baeldung/hextoint/HexToIntConversionUnitTest.java

diff --git a/core-java-modules/core-java-hex/test/java/com/baeldung/hextoint/HexToIntConversionUnitTest.java b/core-java-modules/core-java-hex/test/java/com/baeldung/hextoint/HexToIntConversionUnitTest.java
new file mode 100644
index 0000000000..c236f0a818
--- /dev/null
+++ b/core-java-modules/core-java-hex/test/java/com/baeldung/hextoint/HexToIntConversionUnitTest.java
@@ -0,0 +1,42 @@
+package com.baeldung.hextoint;
+
+import org.junit.Test;
+
+import java.math.BigInteger;
+
+import static org.junit.Assert.assertEquals;
+
+public class HexToIntConversionUnitTest {
+
+    @Test
+    public void givenValidHexString_whenUsingParseInt_thenExpectCorrectDecimalValue() {
+        String hexString = "0x00FF00";
+        int expectedDecimalValue = 65280;
+
+        int decimalValue = Integer.parseInt(hexString.substring(2), 16);
+
+        assertEquals(expectedDecimalValue, decimalValue);
+    }
+
+    @Test
+    public void givenValidHexString_whenUsingIntegerDecode_thenExpectCorrectDecimalValue() {
+        String hexString = "0x00FF00";
+        int expectedDecimalValue = 65280;
+
+        int decimalValue = Integer.decode(hexString);
+
+        assertEquals(expectedDecimalValue, decimalValue);
+    }
+
+    @Test
+    public void givenValidHexString_whenUsingBigInteger_thenExpectCorrectDecimalValue() {
+        String hexString = "0x00FF00";
+        int expectedDecimalValue = 65280;
+
+        BigInteger bigIntegerValue = new BigInteger(hexString.substring(2), 16);
+        int decimalValue = bigIntegerValue.intValue();
+        assertEquals(expectedDecimalValue, decimalValue);
+    }
+
+
+}