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require 'spec_helper'
describe Parslet::Atoms::Alternative do
include Parslet
describe '| shortcut' do
let(:alternative) { str('a') | str('b') }
context "when chained with different atoms" do
before(:each) {
# Chain something else to the alternative parslet. If it modifies the
# parslet atom in place, we'll notice:
alternative | str('d')
}
let!(:chained) { alternative | str('c') }
it "is side-effect free" do
chained.should parse('c')
chained.should parse('a')
chained.should_not parse('d')
end
end
end
end
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