### Question:
PdfSignatureDigestAlgorithms { public static boolean isSupported(String digestAlgorithm) { return ALL_SUPPORTED_DIGEST_ALGORITHMS.contains(digestAlgorithm); } private  PdfSignatureDigestAlgorithms(); static boolean isSupported(String digestAlgorithm); static final String SHA1; static final String SHA256; static final String SHA_256; static final String SHA384; static final String SHA_384; static final String SHA512; static final String SHA_512; static final String RIPEMD160; static final List<String> ALL_SUPPORTED_DIGEST_ALGORITHMS; }### Answer:
@Test public void shouldNotSupportFictitiousDigestAlgorithm() { boolean supported = PdfSignatureDigestAlgorithms.isSupported("HSA 256"); assertFalse("We support fictitious Digest Algorithms ??", supported); }