Fix nested directives within a list (#421)

* Fix nested directives within a list

* Add test

* Move condition

* remove whitespace

Author: reakaleek

Diff for: src/Elastic.Markdown/Myst/Directives/DirectiveBlockParser.cs

@@ -169,6 +169,9 @@ public override BlockState TryContinue(BlockProcessor processor, Block block)
 		if (!line.StartsWith(":"))
 			return base.TryContinue(processor, block);
 
+		if (line.StartsWith(":::"))
+			return base.TryContinue(processor, block);
+
 		if (block is not DirectiveBlock directiveBlock)
 			return base.TryContinue(processor, block);
 

Diff for: tests/Elastic.Markdown.Tests/Directives/AdmonitionTests.cs

@@ -99,3 +99,115 @@ A regular paragraph.
 	[Fact]
 	public void SetsDropdownOpen() => Block!.DropdownOpen.Should().BeTrue();
 }
+
+
+public class NestedDirectiveWithListTests(ITestOutputHelper output) : DirectiveTest<AdmonitionBlock>(output,
+	"""
+	# heading
+
+	:::::{note}
+
+	- List Item 1
+	  ::::{note}
+	  Hello, World!
+	  ::::
+
+	## What
+
+	:::::
+	"""
+)
+{
+	[Fact]
+	public void Render() => Html.Should().Contain("""
+	                                              <li> List Item 1
+	                                              <div class="admonition note">
+	                                              	<p class="admonition-title">Note</p>
+	                                              	  Hello, World!
+	                                              </div>
+	                                              </li>
+	                                              """);
+}
+
+
+public class NestedDirectiveWithListTests2(ITestOutputHelper output) : DirectiveTest<AdmonitionBlock>(output,
+	"""
+	# heading
+
+	:::{note}
+
+	- List Item 1
+	  :::{note}
+	  Hello, World!
+	  :::
+
+	## What
+
+	:::
+	"""
+)
+{
+	[Fact]
+	public void Render() => Html.Should().Contain("""
+	                                              <li> List Item 1
+	                                              <div class="admonition note">
+	                                              	<p class="admonition-title">Note</p>
+	                                              	  Hello, World!
+	                                              </div>
+	                                              </li>
+	                                              """);
+}
+
+public class NestedDirectiveWithListTests3(ITestOutputHelper output) : DirectiveTest<AdmonitionBlock>(output,
+	"""
+	# heading
+
+	:::{note}
+
+	- List Item 1
+	  :::::{note}
+	  Hello, World!
+	  :::::
+
+	## What
+
+	:::
+	"""
+)
+{
+	[Fact]
+	public void Render() => Html.Should().Contain("""
+	                                              <li> List Item 1
+	                                              <div class="admonition note">
+	                                              	<p class="admonition-title">Note</p>
+	                                              	  Hello, World!
+	                                              </div>
+	                                              </li>
+	                                              """);
+}
+
+
+public class DirectiveInList(ITestOutputHelper output) : DirectiveTest<AdmonitionBlock>(output,
+	"""
+	# heading
+
+	- List Item 1
+	  :::::{note}
+	  Hello, World!
+	  :::::
+	"""
+)
+{
+	[Fact]
+	public void Type() => Block!.Admonition.Should().Be("note");
+
+	[Fact]
+	public void Render() => Html.Should().Contain("""
+	                                              <li> List Item 1
+	                                              <div class="admonition note">
+	                                              	<p class="admonition-title">Note</p>
+	                                              	  Hello, World!
+	                                              </div>
+	                                              </li>
+	                                              """);
+}

Diff for: tests/Elastic.Markdown.Tests/Directives/DirectiveBaseTests.cs

@@ -23,8 +23,7 @@ public override async Task InitializeAsync()
 	{
 		await base.InitializeAsync();
 		Block = Document
-			.Where(block => block is TDirective)
-			.Cast<TDirective>()
+			.Descendants<TDirective>()
 			.FirstOrDefault();
 	}