This commit is related to BAEL-7104 (#15368)

This commit aims to add a test class "SkipInputStreamUnitTest" that provide a test method that utilizes the skip() method.

core-java-modules/core-java-streams/src/test/java/com/baeldung/skipinputstream/SkipInputStreamUnitTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.skipinputstream;
+
+import org.junit.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import static org.junit.Assert.assertArrayEquals;
+
+public class SkipInputStreamUnitTest {
+    @Test
+    public void givenInputStreamWithBytes_whenSkipBytes_thenRemainingBytes() throws IOException {
+        byte[] inputData = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        InputStream inputStream = new ByteArrayInputStream(inputData);
+
+        long bytesToSkip = 3;
+        long skippedBytes = inputStream.skip(bytesToSkip);
+
+        assertArrayEquals(new byte[]{4, 5, 6, 7, 8, 9, 10}, readRemainingBytes(inputStream));
+
+        assert skippedBytes == bytesToSkip : "Incorrect number of bytes skipped";
+    }
+
+    private byte[] readRemainingBytes(InputStream inputStream) throws IOException {
+        byte[] buffer = new byte[inputStream.available()];
+        int bytesRead = inputStream.read(buffer);
+        if (bytesRead == -1) {
+            throw new IOException("End of stream reached");
+        }
+        return buffer;
+    }
+}