lib/capybara/screenshot/diff/drivers/utils.rb in capybara-screenshot-diff-1.8.0 vs lib/capybara/screenshot/diff/drivers/utils.rb in capybara-screenshot-diff-1.8.1

@@ -8,14 +8,16 @@
           result = []
           begin
             result << :vips if defined?(Vips) || require("vips")
           rescue LoadError
             # vips not present
+            Object.send(:remove_const, :Vips) if defined?(Vips)
           end
           begin
             result << :chunky_png if defined?(ChunkyPNG) || require("chunky_png")
           rescue LoadError
             # chunky_png not present
+            Object.send(:remove_const, :ChunkyPNG) if defined?(ChunkyPNG)
           end
           result
         end
 
         def self.find_driver_class_for(driver)