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require "spec_helper"
require "hamster/list"
describe Hamster::List do
describe "#reverse" do
context "on a really big list" do
it "doesn't run out of stack" do
-> { Hamster.interval(0, STACK_OVERFLOW_DEPTH).reverse }.should_not raise_error
end
end
it "is lazy" do
-> { Hamster.stream { fail }.reverse }.should_not raise_error
end
[
[[], []],
[["A"], ["A"]],
[%w[A B C], %w[C B A]],
].each do |values, expected|
context "on #{values.inspect}" do
let(:list) { L[*values] }
it "preserves the original" do
list.reverse { |item| item.downcase }
list.should eql(L[*values])
end
it "returns #{expected.inspect}" do
list.reverse { |item| item.downcase }.should == L[*expected]
end
end
end
end
end
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