Contents

require 'spec_helper'

RSpec.describe('Meta scanning') do
  tests = {
    'abc??|def*+|ghi+' => {
      0   => [:literal,     :literal,                 'abc',  0, 3],
      1   => [:quantifier,  :zero_or_one_reluctant,   '??',   3, 5],
      2   => [:meta,        :alternation,             '|',    5, 6],
      3   => [:literal,     :literal,                 'def',  6, 9],
      4   => [:quantifier,  :zero_or_more_possessive, '*+',   9, 11],
      5   => [:meta,        :alternation,             '|',    11, 12],
    },

    '(a\|b)|(c|d)\|(e[|]f)' => {
      2   => [:escape,      :alternation,             '\|',   2, 4],
      5   => [:meta,        :alternation,             '|',    6, 7],
      8   => [:meta,        :alternation,             '|',    9, 10],
      11  => [:escape,      :alternation,             '\|',   12, 14],
      15  => [:literal,     :literal,                 '|',    17, 18],
    },
  }

  tests.each_with_index do |(pattern, checks), count|
    specify("scanner_meta_alternation_#{count}") do
      tokens = RS.scan(pattern)

      checks.each do |index, (type, token, text, ts, te)|
        result = tokens.at(index)

        expect(result[0]).to eq type
        expect(result[1]).to eq token
        expect(result[2]).to eq text
        expect(result[3]).to eq ts
        expect(result[4]).to eq te
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
regexp_parser-1.5.0	spec/scanner/meta_spec.rb