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require "spec_helper"
require "hamster/vector"
describe Hamster::Vector do
[
[:sort, ->(left, right) { left.length <=> right.length }],
[:sort_by, ->(item) { item.length }],
].each do |method, comparator|
describe "##{method}" do
[
[[], []],
[["A"], ["A"]],
[%w[Ichi Ni San], %w[Ni San Ichi]],
].each do |values, expected|
describe "on #{values.inspect}" do
let(:vector) { V[*values] }
context "with a block" do
it "preserves the original" do
vector.send(method, &comparator)
vector.should eql(V[*values])
end
it "returns #{expected.inspect}" do
vector.send(method, &comparator).should eql(V[*expected])
end
end
context "without a block" do
it "preserves the original" do
vector.send(method)
vector.should eql(V[*values])
end
it "returns #{expected.sort.inspect}" do
vector.send(method).should eql(V[*expected.sort])
end
end
end
end
[10, 31, 32, 33, 1023, 1024, 1025].each do |size|
context "on a #{size}-item vector" do
it "behaves like Array#{method}" do
array = size.times.map { rand(10000) }
vector = V.new(array)
if method == :sort
vector.sort.should == array.sort
else
vector.sort_by { |x| -x }.should == array.sort_by { |x| -x }
end
end
end
end
end
end
end
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