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Versions: 7
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Contents
require 'spec_helper'
require 'hamster/list'
describe Hamster::List do
[:append, :concat, :cat, :+].each do |method|
describe "##{method}" do
it "is lazy" do
lambda { Hamster.stream { fail }.append(Hamster.stream { fail }) }.should_not raise_error
end
[
[[], [], []],
[["A"], [], ["A"]],
[[], ["A"], ["A"]],
[["A", "B"], ["C", "D"], ["A", "B", "C", "D"]],
].each do |left_values, right_values, expected|
describe "on #{left_values.inspect} and #{right_values.inspect}" do
before do
@left = Hamster.list(*left_values)
@right = Hamster.list(*right_values)
@result = @left.append(@right)
end
it "preserves the left" do
@left.should == Hamster.list(*left_values)
end
it "preserves the right" do
@right.should == Hamster.list(*right_values)
end
it "returns #{expected.inspect}" do
@result.should == Hamster.list(*expected)
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems