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Diffstat (limited to 'spec/ruby/core/enumerable/first_spec.rb')
-rw-r--r-- | spec/ruby/core/enumerable/first_spec.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerable/first_spec.rb b/spec/ruby/core/enumerable/first_spec.rb new file mode 100644 index 0000000000..a85550ee3b --- /dev/null +++ b/spec/ruby/core/enumerable/first_spec.rb @@ -0,0 +1,28 @@ +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 |