@SuppressWarnings("ConstantConditions")
@Test public void testDecryptNullValue() {

	// Arrange:
	final Decrypto mockDecrypto = mock(Decrypto.class);
	// Act:
	final String decrypted = CryptographyUtils.decrypt(null, mockDecrypto);
	// Assert:
	assertThat(decrypted, is(nullValue()));
	verifyZeroInteractions(mockDecrypto);
}