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

describe "Enumerable#each_with_object" do
  ruby_version_is '1.9' do
    before :each do
      @values = [2, 5, 3, 6, 1, 4]
      @enum = EnumerableSpecs::Numerous.new(*@values)
      @initial = "memo"
    end

    it "passes each element and its argument to the block" do
      acc = []
      @enum.each_with_object(@initial) do |elem, obj|
        obj.should equal(@initial)
        obj = 42
        acc << elem
      end.should equal(@initial)
      acc.should == @values
    end

    it "returns an enumerator if no block" do
      acc = []
      e = @enum.each_with_object(@initial)
      e.each do |elem, obj|
        obj.should equal(@initial)
        obj = 42
        acc << elem
      end.should equal(@initial)
      acc.should == @values
    end

    it "gathers whole arrays as elements when each yields multiple" do
      multi = EnumerableSpecs::YieldsMulti.new
      array = []
      multi.each_with_object(array) { |elem, obj| obj << elem }
      array.should == [[1, 2], [3, 4, 5], [6, 7, 8, 9]]
    end

  end
end
