Refresh the markdown cache if it was `nil`

If the cached html_field for a markdown_field is `nil` while the
mfarkdown_field is not, it needs to be refreshed.

1 files changed, 6 insertions, 0 deletions

diff --git a/spec/models/concerns/cache_markdown_field_spec.rb b/spec/models/concerns/cache_markdown_field_spec.rb
index 4edafbc4e32..40bbb10eaac 100644
--- a/spec/models/concerns/cache_markdown_field_spec.rb
+++ b/spec/models/concerns/cache_markdown_field_spec.rb
@@ -170,6 +170,12 @@ describe CacheMarkdownField do
 
       is_expected.to be_truthy
     end
+
+    it 'returns false if the markdown field is set but the html is not' do
+      thing.foo_html = nil
+
+      is_expected.to be_falsy
+    end
   end
 
   describe '#refresh_markdown_cache!' do