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require_relative '../../../spec_helper'
ruby_version_is "2.7" do
describe "Enumerator::Lazy#eager" do
it "returns a non-lazy Enumerator converted from the lazy enumerator" do
enum = [1, 2, 3].lazy
enum.class.should == Enumerator::Lazy
enum.eager.class.should == Enumerator
end
it "does not enumerate an enumerator" do
ScratchPad.record []
sequence = [1, 2, 3]
enum_lazy = Enumerator::Lazy.new(sequence) do |yielder, value|
yielder << value
ScratchPad << value
end
ScratchPad.recorded.should == []
enum = enum_lazy.eager
ScratchPad.recorded.should == []
enum.map { |i| i }.should == [1, 2, 3]
ScratchPad.recorded.should == [1, 2, 3]
end
end
end
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