Sha256: 309e4aa1e4a3570ff6437ae760eaabda07ff61af4ce028defb168763856932ee
Contents?: true
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Versions: 10
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Stored size: 1.85 KB
Contents
require File.expand_path('../../../spec_helper', __FILE__)
require 'hamster/list'
describe Hamster::List do
[:reduce, :inject, :fold, :foldr].each do |method|
describe "##{method}" do
describe "on a really big list" do
before do
@list = Hamster.interval(0, STACK_OVERFLOW_DEPTH)
end
it "doesn't run out of stack" do
lambda { @list.reduce(&:+) }.should_not raise_error
end
end
[
[[], 10, 10],
[[1], 10, 9],
[[1, 2, 3], 10, 4],
].each do |values, initial, expected|
describe "on #{values.inspect}" do
before do
@list = Hamster.list(*values)
end
describe "with an initial value of #{initial}" do
describe "and a block" do
it "returns #{expected.inspect}" do
@list.send(method, initial) { |memo, item| memo - item }.should == expected
end
end
describe "and no block" do
it "returns the memo" do
@list.send(method, initial).should == initial
end
end
end
end
end
[
[[], nil],
[[1], 1],
[[1, 2, 3], -4],
].each do |values, expected|
describe "on #{values.inspect}" do
before do
@list = Hamster.list(*values)
end
describe "with no initial value" do
describe "and a block" do
it "returns #{expected.inspect}" do
@list.send(method) { |memo, item| memo - item }.should == expected
end
end
describe "and no block" do
it "returns nil" do
@list.send(method).should be_nil
end
end
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems