public void NullPasswordCredentials()
    {
        string baseUri  = "http://sonarqube.test.de/";
        string username = "******";
        string password = "******";
        SqAuthValidationUriBuilder uri = new SqAuthValidationUriBuilder(baseUri, username, password);

        uri.UserCredentials(username, null);

        string expectedBaseUri = "http://" + username + ":" + password + "@" + "sonarqube.test.de/api/authentication/validate";

        Assert.AreEqual(expectedBaseUri, uri.GetSqUri().ToString());
    }