when(request.isSigningEnforced()).thenReturn(true);
        response.getServerData().signaturesEnabled = true;

        assertTrue(response.isValid(mockContext, request));
        assertTrue(response.isSigningNegotiated());
        assertTrue((response.getNegotiatedFlags2() & SmbConstants.FLAGS2_SECURITY_SIGNATURES) != 0);
    }

    @Test
    public void testIsValidWithUnicode() {

        SmbNegotiationResponse nego = mock(SmbNegotiationResponse.class);
        setField(transport, "negotiated", nego);
        when(nego.isSigningNegotiated()).thenReturn(true);
        when(nego.isSigningRequired()).thenReturn(false).thenReturn(true);

        assertTrue(transport.isSigningOptional());
        assertTrue(transport.isSigningEnforced());
    }

        if (this.signingEnforced) {
            return false;
        }
        final SmbNegotiationResponse nego = getNegotiateResponse();
        return nego.isSigningNegotiated() && !nego.isSigningRequired();
    }

    @Override
    public boolean isSigningEnforced() throws SmbException {
        if (this.signingEnforced) {
            return true;
        }