Add test

Author: srawlins

test/mustachio/aot_compiler_render_test.dart

@@ -259,6 +259,15 @@ void main() {
     expect(output, equals('Text Foo: hello'));
   });
 
+  test('Renderer renders a value section node keyed lower in the stack',
+      () async {
+    var output = await renderBar({
+      'foo|lib/templates/html/bar.html':
+          'Text {{#foo}}One {{#s2}}Two{{/s2}}{{/foo}}',
+    }, '_i1.Bar()..foo = _i1.Foo()..s2 = "hello"');
+    expect(output, equals('Text One Two'));
+  });
+
   test('Renderer renders a null value section node as blank', () async {
     var output = await renderFoo({
       'foo|lib/templates/html/foo.html':

test/mustachio/runtime_renderer_render_test.dart

@@ -208,7 +208,7 @@ void main() {
       ..writeAsStringSync('Text {{#foo}}One {{#s2}}Two{{/s2}}{{/foo}}');
     var barTemplate = await Template.parse(barTemplateFile);
     var bar = Bar()
-      ..foo = (Foo()..s1 = 'goodbye')
+      ..foo = Foo()
       ..s2 = 'hello';
     expect(renderBar(bar, barTemplate), equals('Text One Two'));
   });