lib/utils.rb

@@ -94,9 +94,8 @@ module Utils

                       def <=> other
              

                         other = other.array
              

                         @array.each_with_index do |e, i|
              

                -          case cmp = e <=> other[i]
              

                -          when nil
              

                -            return nil
              

                +          o = other[i]
              

                +          case cmp = e <=> o || e.to_s <=> o.to_s
              

                           when 0
              

                             next
              

                           else
              

spec/lib/utils_spec.rb

@@ -153,5 +153,23 @@ describe Utils do

                       Utils.sort_tuples!(tuples, orders)
              

                       expect(tuples).to eq expected
              

                     end
              

                +
              

                +    it "always succeeds in sorting even if it finds pairs of incomparable objects" do
              

                +      time = Time.now
              

                +      tuples = [
              

                +        [2,   "a", time - 1],  # 0
              

                +        [1,   "b", nil],       # 1
              

                +        [1,   "b", time],      # 2
              

                +        ["2", nil, time],      # 3
              

                +        [1,   nil, time],      # 4
              

                +        [nil, "a", time + 1],  # 5
              

                +        [2,   "a", time],      # 6
              

                +      ]
              

                +      orders = [true, false, true]
              

                +      expected = tuples.values_at(3, 6, 0, 4, 2, 1, 5)
              

                +
              

                +      Utils.sort_tuples!(tuples, orders)
              

                +      expect(tuples).to eq expected
              

                +    end
              

                   end
              

                 end