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Size: 1.59 KB

Versions: 10

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Stored size: 1.59 KB

Contents

require File.expand_path('../../../spec_helper', __FILE__)

require 'hamster/set'

describe Hamster::Set do

  [:reduce, :inject, :fold, :foldr].each do |method|

    describe "##{method}" do

      [
        [[], 10, 10],
        [[1], 10, 9],
        [[1, 2, 3], 10, 4],
      ].each do |values, initial, expected|

        describe "on #{values.inspect}" do

          before do
            @set = Hamster.set(*values)
          end

          describe "with an initial value of #{initial}" do

            describe "and a block" do

              it "returns #{expected.inspect}" do
                @set.send(method, initial) { |memo, item| memo - item }.should == expected
              end

            end

            describe "and no block" do

              it "returns the memo" do
                @set.send(method, initial).should == initial
              end

            end

          end

        end

      end

      [
        [[], nil],
        [[1], 1],
        [[1, 2, 3], -4],
      ].each do |values, expected|

        describe "on #{values.inspect}" do

          before do
            @set = Hamster.set(*values)
          end

          describe "with no initial value" do

            describe "and a block" do

              it "returns #{expected.inspect}" do
                @set.send(method) { |memo, item| memo - item }.should == expected
              end

            end

            describe "and no block" do

              it "returns nil" do
                @set.send(method).should be_nil
              end

            end

          end

        end

      end

    end

  end

end

Version data entries

10 entries across 10 versions & 1 rubygems

Version Path
hamster-0.3.6 spec/hamster/set/reduce_spec.rb
hamster-0.3.5 spec/hamster/set/reduce_spec.rb
hamster-0.3.4 spec/hamster/set/reduce_spec.rb
hamster-0.3.3 spec/hamster/set/reduce_spec.rb
hamster-0.3.2 spec/hamster/set/reduce_spec.rb
hamster-0.3.1 spec/hamster/set/reduce_spec.rb
hamster-0.3.0 spec/hamster/set/reduce_spec.rb
hamster-0.2.13 spec/hamster/set/reduce_spec.rb
hamster-0.2.12 spec/hamster/set/reduce_spec.rb
hamster-0.2.11 spec/hamster/set/reduce_spec.rb