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

describe :enum_rewind, :shared => true do

  before(:each) do
    @enum = enumerator_class.new(1, :upto, 3)
  end

  it "resets the enumerator to its initial state" do
    @enum.next.should == 1
    @enum.next.should == 2
    @enum.rewind
    @enum.next.should == 1
  end

  it "returns self" do
    @enum.rewind.should == @enum
  end

  it "has no effect on a new enumerator" do
    @enum.rewind
    @enum.next.should == 1
  end

  it "has no effect if called multiple, consecutive times" do
    @enum.next.should == 1
    @enum.rewind
    @enum.rewind
    @enum.next.should == 1
  end

  ruby_version_is "1.9" do
    it "works with peek to reset the position" do
      @enum.next
      @enum.next
      @enum.rewind
      @enum.next
      @enum.peek.should == 2
    end
  end
end