Pass all wiki markup formats through pipelines

Previously, when the wiki page format was anything other than `markdown`
or `asciidoc` the formatted content would be returned though a Gitaly
call. Gitaly in turn would delegate formatting to the gitlab-gollum-lib
gem, which in turn would delegate that to various gems (like RDoc for
`rdoc`) and then apply some very liberal sanitization.

It was too liberal!

This change brings our wiki content formatting in line with how we
format other markdown at GitLab, so we have a SSOT for sanitization.

https://gitlab.com/gitlab-org/gitlab/issues/30540

1 files changed, 17 insertions, 0 deletions

diff --git a/spec/models/wiki_page_spec.rb b/spec/models/wiki_page_spec.rb
index 18c62c917dc..9014276dcf8 100644
--- a/spec/models/wiki_page_spec.rb
+++ b/spec/models/wiki_page_spec.rb
@@ -439,6 +439,23 @@ describe WikiPage do
     end
   end
 
+  describe '#path' do
+    let(:path) { 'mypath.md' }
+    let(:wiki_page) { instance_double('Gitlab::Git::WikiPage', path: path).as_null_object }
+
+    it 'returns the path when persisted' do
+      page = described_class.new(wiki, wiki_page, true)
+
+      expect(page.path).to eq(path)
+    end
+
+    it 'returns nil when not persisted' do
+      page = described_class.new(wiki, wiki_page, false)
+
+      expect(page.path).to be_nil
+    end
+  end
+
   describe '#directory' do
     context 'when the page is at the root directory' do
       it 'returns an empty string' do