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require "spec_helper"
require "hamster/deque"
describe Hamster::Deque do
[:enqueue, :push].each do |method|
describe "##{method}" do
[
[[], "A", ["A"]],
[["A"], "B", %w[A B]],
[["A"], "A", %w[A A]],
[%w[A B C], "D", %w[A B C D]],
].each do |values, new_value, expected|
describe "on #{values.inspect} with #{new_value.inspect}" do
let(:deque) { D[*values] }
it "preserves the original" do
deque.send(method, new_value)
deque.should eql(D[*values])
end
it "returns #{expected.inspect}" do
deque.send(method, new_value).should eql(D[*expected])
end
end
end
end
end
end
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