private void ShouldReturnTrueForAllEnvironments(string environmentName)
            {
                var hostingEnvironment = new TestHostingEnvironment
                {
                    EnvironmentName = environmentName
                };
                var options = new SeoOptions();

                DefaultOptions.Configure(options, hostingEnvironment);

                options.RobotsTxt.AddSitemapUrl.Should().BeTrue();
            }
            private void ShouldAllowSiteWideAccessInProduction(string environmentName, bool expected)
            {
                var hostingEnvironment = new TestHostingEnvironment
                {
                    EnvironmentName = environmentName
                };
                var options = new SeoOptions();

                DefaultOptions.Configure(options, hostingEnvironment);

                UserAgentRecord userAgentRecord = options.RobotsTxt.UserAgentRecords.Single();

                userAgentRecord.DisallowAll.Should().Be(expected);
            }