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# -*- encoding: us-ascii -*-
require_relative '../../../spec_helper'
describe "Enumerator::Lazy" do
it "is a subclass of Enumerator" do
Enumerator::Lazy.superclass.should equal(Enumerator)
end
it "defines lazy versions of a whitelist of Enumerator methods" do
lazy_methods = [
:chunk, :collect, :collect_concat, :drop, :drop_while, :enum_for,
:find_all, :flat_map, :force, :grep, :grep_v, :lazy, :map, :reject,
:select, :slice_after, :slice_before, :slice_when, :take, :take_while,
:to_enum, :zip
]
lazy_methods += [:chunk_while, :uniq]
Enumerator::Lazy.instance_methods(false).should include(*lazy_methods)
end
end
describe "Enumerator::Lazy#lazy" do
it "returns self" do
lazy = (1..3).to_enum.lazy
lazy.lazy.should equal(lazy)
end
end
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