require samples if filename matches multiple languages

test/test_samples.rb

@@ -55,19 +55,25 @@ class TestSamples < Test::Unit::TestCase
   end
 
   # If a language extension isn't globally unique then make sure there are samples
-  def test_presence
   Linguist::Language.all.each do |language|
+    define_method "test_#{language.name}_has_samples_if_necessary" do
       language.all_extensions.each do |extension|
-        language_matches = Language.find_by_filename("foo#{extension}")
+        assert_samples Language.find_by_filename("foo#{extension}"), "*#{extension}"
+      end
 
+      language.filenames.each do |filename|
+        assert_samples Language.find_by_filename(filename), filename
+      end
+    end
+  end
+
+  def assert_samples(language_matches, file_glob)
     # If there is more than one language match for a given extension
     # then check that there are examples for that language with the extension
     if language_matches.length > 1
       language_matches.each do |language|
         assert File.directory?("samples/#{language.name}"), "#{language.name} is missing a samples directory"
-            assert Dir.glob("samples/#{language.name}/*#{extension}").any?, "#{language.name} is missing samples for extension #{extension}"
+        assert Dir.glob("samples/#{language.name}/#{file_glob}").any?, "#{language.name} is missing samples for #{file_glob}"
-          end
-        end
       end
     end
   end