SmbConstants.O_CREAT | SmbConstants.O_WRONLY | SmbConstants.O_TRUNC, SmbConstants.FILE_WRITE_DATA,
                SmbConstants.DEFAULT_SHARING);

        byte[] data1 = "Hello ".getBytes();
        byte[] data2 = "World".getBytes();

        // When
        outputStream.write(data1);
        outputStream.write(data2);

        // Then - verify two write requests were sent

    assertThat(encoding.encode(decoded.getBytes(UTF_8))).isEqualTo(encoded);
  }

  private static void testEncodesWithOffset(
      BaseEncoding encoding, String decoded, int offset, int len, String encoded) {
    assertThat(encoding.encode(decoded.getBytes(UTF_8), offset, len)).isEqualTo(encoded);
  }

                testEncryptionKey, testEncryptionKey); // Use same key for test

        byte[] plaintext = "Hello, SMB3 Encryption!".getBytes();
        long sessionId = 0x123456789ABCDEF0L;

        // When - Encrypt
        byte[] encrypted = context.encryptMessage(plaintext, sessionId);

        // Then - Verify encrypted message structure

            bb.putShort((short) 24); // altPathOffset
            bb.putShort((short) 28); // nodeOffset

            // Add path string at offset 20 (8 + 20 = 28)
            bb.position(28);
            bb.put("\\test\0".getBytes(StandardCharsets.UTF_16LE));

            int bytesDecoded = buffer.decode(testBuffer, 0, testBuffer.length);

            assertEquals(42, bytesDecoded); // 8 header + 34 referral

        // Write initial content
        try (OutputStream out = file.openOutputStream(false)) {
            out.write(initialContent.getBytes("UTF-8"));
        }

        // Overwrite with new content
        try (OutputStream out = file.openOutputStream(false)) {
            out.write(newContent.getBytes("UTF-8"));
        }

        // Verify new content
        try (InputStream in = file.getInputStream()) {

import javax.security.auth.kerberos.KerberosPrincipal;

import org.junit.jupiter.api.Test;

/**
 * Tests for the PacMac class.
 */
class PacMacTest {

    private static final byte[] TEST_DATA = "test data".getBytes();
    private static final KerberosPrincipal TEST_PRINCIPAL = new KerberosPrincipal("test@REALM");

    /**
     * Test method for
     * {@link jcifs.pac.PacMac#calculateMacArcfourHMACMD5(int, java.security.Key, byte[])}.

     */
    @Test
    void testParseAuthDataPacWithInvalidToken() {
        // GIVEN an invalid token for AUTH_DATA_PAC
        byte[] invalidToken = "invalid-pac-token".getBytes();

        // WHEN parsing the auth data
        // THEN a PACDecodingException should be thrown
        assertThrows(PACDecodingException.class, () -> {

      @Override
      public CharSource createSource(String string) throws IOException {
        return factory.createSource(string.getBytes(UTF_8)).asCharSource(UTF_8);
      }

      @Override
      public String getExpected(String data) {
        return new String(factory.getExpected(data.getBytes(UTF_8)), UTF_8);
      }

      @Override
      public void tearDown() throws IOException {
        factory.tearDown();

        byte[] src = expected.getBytes("UTF-16LE");
        String result = response.readString(src, 0, src.length);
        assertEquals(expected, result);
    }

    @Test
    void testReadString_Oem() {
        response.useUnicode = false;
        String expected = "test";
        // Simulate OEM encoding with a null terminator
        byte[] src = (expected + "\0").getBytes(StandardCharsets.UTF_8);

            byte[] data = "Hello World Test".getBytes();
            InputStream is = new ByteArrayInputStream(data);
            byte[] buffer = new byte[20];

            int bytesRead = Transport.readn(is, buffer, 0, 5);
            assertEquals(5, bytesRead);
            assertArrayEquals("Hello".getBytes(), java.util.Arrays.copyOfRange(buffer, 0, 5));
        }

        @Test