diff options
Diffstat (limited to 'spec/ruby/core/enumerator/rewind_spec.rb')
-rw-r--r-- | spec/ruby/core/enumerator/rewind_spec.rb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerator/rewind_spec.rb b/spec/ruby/core/enumerator/rewind_spec.rb new file mode 100644 index 0000000000..666136d74a --- /dev/null +++ b/spec/ruby/core/enumerator/rewind_spec.rb @@ -0,0 +1,38 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../../../shared/enumerator/rewind', __FILE__) +require File.expand_path('../fixtures/common', __FILE__) + +describe "Enumerator#rewind" do + it_behaves_like(:enum_rewind, :rewind) + + it "calls the enclosed object's rewind method if one exists" do + obj = mock('rewinder') + enum = obj.to_enum + obj.should_receive(:each).at_most(1) + obj.should_receive(:rewind) + enum.rewind + end + + it "does nothing if the object doesn't have a #rewind method" do + obj = mock('rewinder') + enum = obj.to_enum + obj.should_receive(:each).at_most(1) + lambda { enum.rewind.should == enum }.should_not raise_error + end +end + +describe "Enumerator#rewind" do + before :each do + ScratchPad.record [] + @enum = EnumeratorSpecs::Feed.new.to_enum(:each) + end + + it "clears a pending #feed value" do + @enum.next + @enum.feed :a + @enum.rewind + @enum.next + @enum.next + ScratchPad.recorded.should == [nil] + end +end |