1 files changed, 20 insertions, 1 deletions
diff --git a/spec/lib/rouge/formatters/html_gitlab_spec.rb b/spec/lib/rouge/formatters/html_gitlab_spec.rb
index 79bfdb262c0..6fc1b395fc8 100644
--- a/spec/lib/rouge/formatters/html_gitlab_spec.rb
+++ b/spec/lib/rouge/formatters/html_gitlab_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Rouge::Formatters::HTMLGitlab do
+RSpec.describe Rouge::Formatters::HTMLGitlab, feature_category: :source_code_management do
   describe '#format' do
     subject { described_class.format(tokens, **options) }
 
@@ -67,5 +67,24 @@ RSpec.describe Rouge::Formatters::HTMLGitlab do
         is_expected.to include(%{<span class="unicode-bidi has-tooltip" data-toggle="tooltip" title="#{message}">}).exactly(4).times
       end
     end
+
+    context 'when space characters and zero-width spaces are used' do
+      let(:lang) { 'ruby' }
+      let(:tokens) { lexer.lex(code, continue: false) }
+
+      let(:code) do
+        <<~JS
+          def\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000hello
+        JS
+      end
+
+      it 'replaces the space characters with spaces' do
+        is_expected.to eq(
+          "<span id=\"LC1\" class=\"line\" lang=\"ruby\">" \
+          "<span class=\"k\">def</span><span class=\"err\">                </span><span class=\"n\">hello</span>" \
+          "</span>"
+        )
+      end
+    end
   end
 end