Merge pull request #2665 from SuperTux88/backport-kwargs-fix

[backport] fix: ruby 2.7 kwarg warning in uploader process

Author: mshibuya

lib/carrierwave/uploader/processing.rb

@@ -80,7 +80,17 @@ def process!(new_file=nil)
                 next unless self.send(condition, new_file)
               end
             end
-            self.send(method, *args)
+
+            if args.is_a? Array
+              kwargs, args = args.partition { |arg| arg.is_a? Hash }
+            end
+
+            if kwargs.present?
+              kwargs = kwargs.reduce(:merge)
+              self.send(method, *args, **kwargs)
+            else
+              self.send(method, *args)
+            end
           end
         end
       end

spec/uploader/processing_spec.rb

@@ -86,6 +86,15 @@
       uploader.process!("test.jpg")
     end
 
+    context "when there are additional method key word arguments" do
+      it "calls the processor if the condition method returns true" do
+        uploader_class.process :resize => [200, 300, combine_options: { quality: 70 }], :if => :true?
+        expect(uploader).to receive(:true?).with("test.jpg").once.and_return(true)
+        expect(uploader).to receive(:resize).with(200, 300, combine_options: { quality: 70 })
+        uploader.process!("test.jpg")
+      end
+    end
+
     context "when using RMagick", :rmagick => true do
       before do
         def uploader.cover