This commit is related to BAEL-7837 (#16827)

This commit aims to add a test class IntToUnsignedByteUnitTest.

Author: MohamedHelmyKassab

core-java-modules/core-java-numbers-conversions-2/inttounsignedbyte/IntToUnsignedByteUnitTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.inttounsignedbyte;
+
+import org.junit.Test;
+
+import java.nio.ByteBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class IntToUnsignedByteUnitTest {
+    int value = 200;
+
+    @Test
+    public void givenInt_whenUsingTypeCastingAndBitMasking_thenConvertToUnsignedByte() {
+        byte unsignedByte = (byte) (value & 0xFF);
+
+        assertEquals(200, Byte.toUnsignedInt(unsignedByte));
+    }
+
+    @Test
+    public void givenIntInRange_whenUsingByteBuffer_thenConvertToUnsignedByte() {
+        int value = 200;
+        ByteBuffer buffer = ByteBuffer.allocate(4).putInt(value);
+        byte unsignedByte = buffer.array()[3];
+
+        assertEquals(200, Byte.toUnsignedInt(unsignedByte));
+    }
+}