public async Task Should_only_use_rules_from_Default_ruleset()
        {
            var msg = await _webApp.RunRulesetAction("/ClientSide/DefaultRuleset");

            msg.Length.ShouldEqual(1);
            msg[0].ShouldEqual("third");
        }
        public async Task Throws_exception_if_IHttpContextProvider_not_registered()
        {
            var app = new ClientsideFixture <StartupWithContainerWithoutHttpContextAccessor>();

            bool      thrown = false;
            Exception ex     = new Exception();

            try {
                var msg = await app.RunRulesetAction("/ClientSide/SpecifiedRuleset");
            }
            catch (InvalidOperationException e) {
                thrown = true;
                ex     = e;
            }

            thrown.ShouldBeTrue();
            ex.Message.ShouldEqual("Cannot use the RuleSetForClientSideMessagesAttribute unless the IHttpContextAccessor is registered with the service provider. Make sure the provider is registered by calling services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>(); in your Startup class's ConfigureServices method");
        }