public async Task Ensure_Registered_Properties_Are_Injected()
        {
            var    collection    = new ServiceCollection();
            string expectedValue = "TestValue";
            string templateKey   = "key";

            collection.AddSingleton(new TestViewModel()
            {
                Title = expectedValue
            });
            var propertyInjector = new PropertyInjector(collection.BuildServiceProvider());

            var builder = new StringBuilder();

            builder.AppendLine("@model object");
            builder.AppendLine("@inject RazorLight.Tests.Models.TestViewModel test");
            builder.AppendLine("Hello @test");

            var engine = new EngineFactory().ForEmbeddedResources(typeof(Root));

            engine.Options.DynamicTemplates.Add(templateKey, builder.ToString());
            ITemplatePage templatePage = await engine.CompileTemplateAsync(templateKey);

            //Act
            propertyInjector.Inject(templatePage);

            //Assert
            var prop = templatePage.GetType().GetProperty("test").GetValue(templatePage);

            Assert.NotNull(prop);
            Assert.IsAssignableFrom <TestViewModel>(prop);
            Assert.Equal((prop as TestViewModel).Title, expectedValue);
        }