// Test that unicode strings are properly encoded/decoded
        String unicodeString = "日本語テスト";
        String encoded = BaseEncoding.base64().encode(unicodeString.getBytes(StandardCharsets.UTF_8));
        String decoded = new String(BaseEncoding.base64().decode(encoded), StandardCharsets.UTF_8);

        assertEquals(unicodeString, decoded);
    }

    @Test

            String encoded = permissionHelper.encode(value);
            if (encoded != null) {
                String decoded = permissionHelper.decode(encoded);
                assertNotNull("Decoded value should not be null for: " + value, decoded);
                assertEquals("Decoded value should match original: " + value + " -> " + encoded + " -> " + decoded, value, decoded);
            }
        }
    }

 * includes both natural exceptions such as unreachable servers, as well as synthetic exceptions
 * when responses are of an unexpected type or cannot be decoded.
 *
 * Other exception types cancel the current call:
 *
 *  * For synchronous calls made with [Call.execute], the exception is propagated to the caller.
 *

    }

    /**
     * Decodes the given host string using the specified encoding.
     *
     * @param host the host string to decode
     * @return the decoded host string
     */
    protected String decode(final String host) {
        if (host.indexOf('%') == -1) {
            return host;
        }
        try {
            return URLDecoder.decode(host, encoding);

  }

  private fun testToUrl(
    codePoint: Int,
    encoding: UrlComponentEncodingTester.Encoding,
    component: Component,
  ) {
    val encoded = encoding.encode(codePoint)
    val httpUrl = component.urlString(encoded).toHttpUrl()
    val javaNetUrl = httpUrl.toUrl()
    if (javaNetUrl.toString() != javaNetUrl.toString()) {
      fail("Encoding $component $codePoint using $encoding")
    }
  }

      encodeBase64Lines(pkcs1Bytes())
      append("-----END RSA PRIVATE KEY-----\n")
    }
  }

  private fun pkcs1Bytes(): ByteString {
    val decoded = CertificateAdapters.privateKeyInfo.fromDer(keyPair.private.encoded.toByteString())
    return decoded.privateKey
  }

  /** Build a held certificate with reasonable defaults. */
  class Builder {
    private var notBefore = -1L
    private var notAfter = -1L

import java.io.IOException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Options

/**
 * A decoded [mapping table] that can perform the [mapping step] of IDNA processing.
 *
 * This implementation is optimized for readability over efficiency.
 *
 * This implements non-transitional processing by preserving deviation characters.

    return result.readUtf8()
  }

  /**
   * Converts a single label from Punycode to Unicode.
   *
   * @return true if the range of [string] from [pos] to [limit] was valid and decoded successfully.
   *     Otherwise, the decode failed.
   */
  private fun decodeLabel(
    string: String,
    pos: Int,
    limit: Int,
    result: Buffer,
  ): Boolean {

      }
    }

    @Override
    int decodeTo(byte[] target, CharSequence chars) throws DecodingException {
      checkNotNull(target);
      if (chars.length() % 2 == 1) {
        throw new DecodingException("Invalid input length " + chars.length());
      }
      int bytesWritten = 0;
      for (int i = 0; i < chars.length(); i += 2) {
        int decoded = alphabet.decode(chars.charAt(i)) << 4 | alphabet.decode(chars.charAt(i + 1));

        // Test path traversal that would be decoded
        File baseDir = new File(tempDir.toFile(), "images");
        baseDir.mkdirs();
        File maliciousFile = new File(baseDir, "test/../../../etc/passwd");

        Boolean result = invokeIsValidUploadPath(maliciousFile, baseDir);
        assertFalse("Encoded path traversal should be blocked", result);
    }

    @Test