namespace Spectre.Console.Tests.Unit; public sealed class RenderHookTests { private sealed class HelloRenderHook : IRenderHook { public IEnumerable Process(RenderOptions options, IEnumerable renderables) { return new IRenderable[] { new Text("Hello\n") }.Concat(renderables); } } [Fact] public void Should_Inject_Renderable_Before_Writing_To_Console() { // Given var console = new TestConsole(); console.Pipeline.Attach(new HelloRenderHook()); // When console.Write(new Text("World")); // Then console.Lines[0].ShouldBe("Hello"); console.Lines[1].ShouldBe("World"); } }