Fix Array<Hash> support for steps

Author: emrekutlu

lib/transloadit/assembly.rb

@@ -144,7 +144,7 @@ def _wrap_steps_in_hash(steps)
     when Hash then steps
     when Transloadit::Step then steps.to_hash
     else
-      if steps.uniq(&:name) != steps
+      if steps.uniq != steps
         raise ArgumentError, "There are different Assembly steps using the same name"
       end
       steps.inject({}) { |h, s| h.update s }

lib/transloadit/step.rb

@@ -79,6 +79,10 @@ def to_json
     MultiJson.dump(to_hash)
   end
 
+  def eql?(other)
+    name == other.name
+  end
+
   protected
 
   attr_writer :robot

test/unit/transloadit/test_assembly.rb

@@ -211,6 +211,30 @@
     end
   end
 
+  describe "with multiple hash steps" do
+    before do
+      @encode = { "encode": { "robot": "/video/encode" } }
+      @thumbs = { "thumbs": { "robot": "/video/thumbs" } }
+
+      @assembly = Transloadit::Assembly.new @transloadit,
+        steps: [@encode, @thumbs]
+    end
+
+    it "must wrap its steps into one hash" do
+      _(@assembly.to_hash[:steps].keys).must_include @encode.keys
+      _(@assembly.to_hash[:steps].keys).must_include @thumbs.keys
+    end
+
+    it "must not allow duplicate steps" do
+      thumbs = { "thumbs": { "robot": "/video/thumbs" } }
+      thumbs_duplicate = { "thumbs": { "robot": "/video/encode" } }
+      options = {steps: [thumbs, thumbs_duplicate]}
+      assert_raises ArgumentError do
+        @assembly.create! open("lib/transloadit/version.rb"), **options
+      end
+    end
+  end
+
   describe "using assembly API methods" do
     include WebMock::API