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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/take', __FILE__)
describe "Enumerable#first" do
it "returns the first element" do
EnumerableSpecs::Numerous.new.first.should == 2
EnumerableSpecs::Empty.new.first.should == nil
end
it "returns nil if self is empty" do
EnumerableSpecs::Empty.new.first.should == nil
end
it 'returns a gathered array from yield parameters' do
EnumerableSpecs::YieldsMulti.new.to_enum.first.should == [1, 2]
EnumerableSpecs::YieldsMixed2.new.to_enum.first.should == nil
end
it "raises a RangeError when passed a Bignum" do
enum = EnumerableSpecs::Empty.new
lambda { enum.first(bignum_value) }.should raise_error(RangeError)
end
describe "when passed an argument" do
it_behaves_like :enumerable_take, :first
end
end
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