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require 'spec_helper'
describe Immutable::List do
describe '#at' do
context 'on a really big list' do
let(:list) { BigList }
it "doesn't run out of stack" do
-> { list.at(STACK_OVERFLOW_DEPTH) }.should_not raise_error
end
end
[
[[], 10, nil],
[['A'], 10, nil],
[%w[A B C], 0, 'A'],
[%w[A B C], 2, 'C'],
[%w[A B C], -1, 'C'],
[%w[A B C], -2, 'B'],
[%w[A B C], -4, nil]
].each do |values, number, expected|
describe "#{values.inspect} with #{number}" do
it "returns #{expected.inspect}" do
L[*values].at(number).should == expected
end
end
end
end
end
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