We've already passed comment spec

test/hamlit/engine/comment_test.rb

@@ -8,4 +8,49 @@ class Hamlit::CommentTest < Haml::TestCase
       <!-- comments -->
     HTML
   end
+
+  test 'strips html comment ignoring around spcaes' do
+    assert_render('/   comments    ', <<-HTML)
+      <!-- comments -->
+    HTML
+  end
+
+  test 'accepts backslash-only line in a comment' do
+    assert_render(<<-'HAML', <<-HTML)
+      /
+        \
+    HAML
+      <!--
+
+      -->
+    HTML
+  end
+
+  test 'renders a deeply indented comment starting with backslash' do
+    assert_render(<<-'HAML', <<-HTML)
+      /
+        \       a
+      /
+        a
+    HAML
+      <!--
+             a
+      -->
+      <!--
+      a
+      -->
+    HTML
+  end
+
+  test 'ignores multiline comment' do
+    assert_render(<<-'HAML', <<-HTML)
+      -# if true
+        - raise 'ng'
+          = invalid script
+              too deep indent
+      ok
+    HAML
+      ok
+    HTML
+  end
 end

test/test_helper.rb

@@ -27,7 +27,8 @@ end
 module HamlitTest
   def assert_render(haml, html)
     haml, html = haml.unindent, html.unindent
-    assert_equal render(haml), html
+    options = { escape_html: true, ugly: true }
+    assert_equal render(haml, options), html
   end
 end