public async Task Test_FeedPlugin_ResultsInEmptyTags()
    {
        var fileSystemMock       = new FileSystemMock();
        var metadataProviderMock = new YamlFrontMatterMetadataProvider(new YamlParser());
        var pluginUnderTest      = new SeoPlugin();
        var configuration        = new ConfigurationBuilder().Build();
        var serviceProvider      = new ServiceCollection()
                                   .AddTransient <IPlugin>(_ => pluginUnderTest)
                                   .AddTransformationEngine(configuration)
                                   .AddSingleton(fileSystemMock.Object)
                                   .AddSingleton <IMetadataProvider>(metadataProviderMock)
                                   .BuildServiceProvider();
        var engine = serviceProvider.GetRequiredService <ITransformationEngine>();

        var file = new Kaylumah.Ssg.Manager.Site.Service.Files.Processor.File()
        {
            MetaData = new FileMetaData
            {
            }
        };
        var PageMetaData = file.ToPage();

        PageMetaData.Content = $"{{{{ {pluginUnderTest.Name} }}}}";

        var model = new RenderData()
        {
            Page = PageMetaData
        };
        var renderResult = await engine.Render(new MetadataRenderRequest[] {
            new MetadataRenderRequest {
                Metadata = model
            }
        });

        renderResult.Should().NotBeNull();
        renderResult.Length.Should().Be(1);

        var renderContent = renderResult[0].Content;

        renderContent.Should().NotBeEmpty();
    }
    public async Task Test_SeoPlugin_ResultsInEmptyTags()
    {
        var fileSystemMock       = new FileSystemMock();
        var metadataProviderMock = new YamlFrontMatterMetadataProvider(new YamlParser());
        var pluginUnderTest      = new SeoPlugin();
        var configuration        = new ConfigurationBuilder().Build();
        var serviceProvider      = new ServiceCollection()
                                   .AddTransient <IPlugin>(_ => pluginUnderTest)
                                   .AddTransformationEngine(configuration)
                                   .AddSingleton(fileSystemMock.Object)
                                   .AddSingleton <IMetadataProvider>(metadataProviderMock)
                                   .BuildServiceProvider();
        var engine = serviceProvider.GetRequiredService <ITransformationEngine>();

        var model = new Mock <RenderData>();

        model.Setup(x => x.Content).Returns($"{{{{ {pluginUnderTest.Name} }}}}");
        var renderResult = await engine.Render(new MetadataRenderRequest[] {
            new MetadataRenderRequest {
                Metadata = model.Object
            }
        });

        renderResult.Should().NotBeNull();
        renderResult.Length.Should().Be(1);

        var renderContent = renderResult[0].Content;

        renderContent.Should().NotBeEmpty();

        var document = new HtmlDocument();

        document.LoadHtml(renderContent);
        var metaTags = document.DocumentNode.SelectNodes("meta");

        metaTags.Count.Should().Be(3);
    }