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require 'spec_helper'
describe Immutable::List do
describe '#each' do
context 'on a really big list' do
it "doesn't run out of stack" do
-> { BigList.each { |item| } }.should_not raise_error
end
end
[
[],
['A'],
%w[A B C],
].each do |values|
context "on #{values.inspect}" do
let(:list) { L[*values] }
context 'with a block' do
it 'iterates over the items in order' do
yielded = []
list.each { |item| yielded << item }
yielded.should == values
end
it 'returns nil' do
list.each { |item| item }.should be_nil
end
end
context 'without a block' do
it 'returns an Enumerator' do
list.each.class.should be(Enumerator)
Immutable::List[*list.each].should eql(list)
end
end
end
end
end
end
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