Sha256: 787196ab782e3e3ad4cef8b65e8741551c4e0400077ec5e58caadb711fb42fd5
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Versions: 7
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Stored size: 1.14 KB
Contents
require 'spec_helper'
require 'hamster/tuple'
require 'hamster/list'
describe Hamster::List do
describe "#split_at" do
it "is lazy" do
lambda { Hamster.stream { fail }.split_at(1) }.should_not raise_error
end
[
[[], [], []],
[[1], [1], []],
[[1, 2], [1, 2], []],
[[1, 2, 3], [1, 2], [3]],
[[1, 2, 3, 4], [1, 2], [3, 4]],
].each do |values, expected_prefix, expected_remainder|
describe "on #{values.inspect}" do
before do
@original = Hamster.list(*values)
@result = @original.split_at(2)
@prefix = @result.first
@remainder = @result.last
end
it "preserves the original" do
@original.should == Hamster.list(*values)
end
it "returns a tuple with two items" do
@result.is_a?(Hamster::Tuple).should == true
end
it "correctly identifies the matches" do
@prefix.should == Hamster.list(*expected_prefix)
end
it "correctly identifies the remainder" do
@remainder.should == Hamster.list(*expected_remainder)
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems