assertNotNull(this.context.getCredentials());
    }


    @Test
    @SuppressWarnings ( "deprecation" )
    public void testFixedCredentials () {
        Credentials guestCreds = this.context.withGuestCrendentials().getCredentials();
        assertThat(guestCreds, CoreMatchers.is(CoreMatchers.instanceOf(NtlmPasswordAuthenticator.class)));
        NtlmPasswordAuthenticator ntlmGuestCreds = guestCreds.unwrap(NtlmPasswordAuthenticator.class);

            @Override
            public String getGuestUsername () {
                return "jcifs-guest";
            }
        }).withGuestCrendentials();

        try ( SmbResource f = new SmbFile(getTestShareGuestURL(), ctx) ) {
            checkConnection(f);
        }
        catch ( SmbAuthException e ) {
            ignoreAuthFailure(e);
        }