public void BuilderRequiresProgressProviderFactory() { var quidjibo = new QuidjiboBuilder(); Action build = () => quidjibo.ConfigureAssemblies(GetType().Assembly).ConfigureProgressProviderFactory(null).BuildServer(); build.Should().Throw <QuidjiboBuilderException>() .WithMessage("Failed to validate. See list of errors for more detail.") .And.Errors.Should().Contain("Requires Progress Provider Factory"); }