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require 'spec_helper'
require 'puppet/util/external_iterator'
describe Puppet::Util::ExternalIterator do
let(:subject) { Puppet::Util::ExternalIterator.new(["a", "b", "c"]) }
context "#next" do
it "should iterate over the items" do
subject.next.should == ["a", 0]
subject.next.should == ["b", 1]
subject.next.should == ["c", 2]
end
end
context "#peek" do
it "should return the 0th item repeatedly" do
subject.peek.should == ["a", 0]
subject.peek.should == ["a", 0]
end
it "should not advance the iterator, but should reflect calls to #next" do
subject.peek.should == ["a", 0]
subject.peek.should == ["a", 0]
subject.next.should == ["a", 0]
subject.peek.should == ["b", 1]
subject.next.should == ["b", 1]
subject.peek.should == ["c", 2]
subject.next.should == ["c", 2]
subject.peek.should == [nil, nil]
subject.next.should == [nil, nil]
end
end
end
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