FIX: allow oneboxes with title and image (discourse#449)

lib/onebox/engine/allowlisted_generic_onebox.rb

@@ -286,7 +286,7 @@ def generic_html
         return image_html    if is_image?
         return embedded_html if is_embedded?
         return card_html     if is_card?
-        return article_html  if has_text?
+        return article_html  if (has_text? || is_image_article?)
       end
 
       def is_card?
@@ -301,8 +301,15 @@ def is_article?
       end
 
       def has_text?
-        !Onebox::Helpers.blank?(data[:title]) &&
-        !Onebox::Helpers.blank?(data[:description])
+        has_title? && !Onebox::Helpers.blank?(data[:description])
+      end
+
+      def has_title?
+        !Onebox::Helpers.blank?(data[:title])
+      end
+
+      def is_image_article?
+        has_title? && has_image?
       end
 
       def is_image?

lib/onebox/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Onebox
-  VERSION = "2.2.0"
+  VERSION = "2.2.1"
 end

spec/lib/onebox/engine/allowlisted_generic_onebox_spec.rb

@@ -178,15 +178,18 @@ def generic_html
   end
 
   describe 'missing description' do
-    context 'does not work without description' do
+    context 'works without description if image is present' do
       let(:cnn_url) { "https://edition.cnn.com/2020/05/15/health/gallery/coronavirus-people-adopting-pets-photos/index.html" }
       before do
         fake(cnn_url, response('cnn'))
       end
 
-      it 'does not onebox' do
+      it 'shows basic onebox' do
         onebox = described_class.new(cnn_url)
-        expect(onebox.to_html).to be_nil
+        expect(onebox.to_html).not_to be_nil
+        expect(onebox.to_html).to include("https://edition.cnn.com/2020/05/15/health/gallery/coronavirus-people-adopting-pets-photos/index.html")
+        expect(onebox.to_html).to include("https://cdn.cnn.com/cnnnext/dam/assets/200427093451-10-coronavirus-people-adopting-pets-super-tease.jpg")
+        expect(onebox.to_html).to include("People are fostering and adopting pets during the pandemic")
       end
     end
   end