public void Render_HtmlBlock_Integration()
        {
            // Arrange
            AdditionalSyntaxTrees.Add(Parse(@"
using Microsoft.AspNetCore.Components;
namespace Test
{
    public class MyComponent : ComponentBase
    {
        [Parameter]
        RenderFragment ChildContent { get; set; }
    }
}
"));

            var component = CompileToComponent(@"
<html>
  <head><meta><meta></head>
  <body>
    <MyComponent>
      <div><span></span><span></span></div>
      <div>@(""hi"")</div>
      <div><span></span><span></span></div>
      <div></div>
      <div>@(""hi"")</div>
      <div></div>
  </MyComponent>
  </body>
</html>");

            // Act
            var frames = GetRenderTree(component);

            // Assert: component frames are correct
            Assert.Collection(
                frames,
                frame => AssertFrame.Element(frame, "html", 9, 0),
                frame => AssertFrame.Whitespace(frame, 1),
                frame => AssertFrame.Markup(frame, "<head><meta><meta></head>\n  ", 2),
                frame => AssertFrame.Element(frame, "body", 5, 3),
                frame => AssertFrame.Whitespace(frame, 4),
                frame => AssertFrame.Component(frame, "Test.MyComponent", 2, 5),
                frame => AssertFrame.Attribute(frame, RenderTreeBuilder.ChildContent, 6),
                frame => AssertFrame.Whitespace(frame, 16),
                frame => AssertFrame.Whitespace(frame, 17));

            // Assert: Captured ChildContent frames are correct
            var childFrames = GetFrames((RenderFragment)frames[6].AttributeValue);

            Assert.Collection(
                childFrames,
                frame => AssertFrame.Whitespace(frame, 7),
                frame => AssertFrame.Markup(frame, "<div><span></span><span></span></div>\n      ", 8),
                frame => AssertFrame.Element(frame, "div", 2, 9),
                frame => AssertFrame.Text(frame, "hi", 10),
                frame => AssertFrame.Whitespace(frame, 11),
                frame => AssertFrame.Markup(frame, "<div><span></span><span></span></div>\n      <div></div>\n      ", 12),
                frame => AssertFrame.Element(frame, "div", 2, 13),
                frame => AssertFrame.Text(frame, "hi", 14),
                frame => AssertFrame.Markup(frame, "\n      <div></div>\n  ", 15));
        }