require 'helper' describe Pry::HistoryArray do before do @array = Pry::HistoryArray.new 10 end it 'should have a maximum size specifed at creation time' do @array.max_size.should == 10 end it 'should be able to be added objects to' do @array << 1 << 2 << 3 @array.size.should == 3 @array.to_a.should == [1, 2, 3] end it 'should be able to access single elements' do @array << 1 << 2 << 3 @array[2].should == 3 end it 'should be able to access negative indices' do @array << 1 << 2 << 3 @array[-1].should == 3 end it 'should be able to access ranges' do @array << 1 << 2 << 3 << 4 @array[1..2].should == [2, 3] end it 'should be able to access ranges starting from a negative index' do @array << 1 << 2 << 3 << 4 @array[-2..3].should == [3, 4] end it 'should be able to access ranges ending at a negative index' do @array << 1 << 2 << 3 << 4 @array[2..-1].should == [3, 4] end it 'should be able to access ranges using only negative indices' do @array << 1 << 2 << 3 << 4 @array[-2..-1].should == [3, 4] end it 'should be able to use range where end is excluded' do @array << 1 << 2 << 3 << 4 @array[-2...-1].should == [3] end it 'should be able to access slices using a size' do @array << 1 << 2 << 3 << 4 @array[-3, 2].should == [2, 3] end it 'should remove older entries' do 11.times { |n| @array << n } @array[0].should == nil @array[1].should == 1 @array[10].should == 10 end end