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require_relative '../../spec_helper'
describe :enum_rewind, shared: true do
before :each do
@enum = 1.upto(3)
end
it "resets the enumerator to its initial state" do
@enum.next.should == 1
@enum.next.should == 2
@enum.rewind
@enum.next.should == 1
end
it "returns self" do
@enum.rewind.should == @enum
end
it "has no effect on a new enumerator" do
@enum.rewind
@enum.next.should == 1
end
it "has no effect if called multiple, consecutive times" do
@enum.next.should == 1
@enum.rewind
@enum.rewind
@enum.next.should == 1
end
it "works with peek to reset the position" do
@enum.next
@enum.next
@enum.rewind
@enum.next
@enum.peek.should == 2
end
end
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