Contents

require 'roqua/core_ext/enumerable/sort_by_alphanum'

describe Enumerable do
  describe '#sort_by_alphanum' do
    let(:input) { ["004some11thing", "004some10thing", "3another"] }
    it 'sorts by chunks' do
      expect(input.sort_by_alphanum).to eq ["3another", "004some10thing", "004some11thing"]
    end

    it 'can take a block which can transform values before comparison' do
      expect(input.sort_by_alphanum(&:reverse)).to eq ["004some10thing", "004some11thing", "3another"]
    end

    it 'sorts shorter strings first' do
      input = %w[a_2_ a_2 a a_1]  # curlies are above alpha in utf-8, Ԙ is multi-byte
      expect(input.sort_by_alphanum).to eq %w[a a_1 a_2 a_2_]
    end

    it 'treats non-alphanum as lower than alpha and num' do
      input = %w[b3a b{c bԘb]  # curlies are above alpha in utf-8, Ԙ is multi-byte
      expect(input.sort_by_alphanum).to eq %w[b{c bԘb b3a]
    end

    it 'compares number chunks as integers' do
      expect(%w(004 3).sort_by_alphanum).to eq %w(3 004)
    end

    it 'sorts identical integers by asci'  do
      input = %w[b4e b0004e b04e b004e]
      expect(input.sort_by_alphanum).to  eq %w[b0004e b004e b04e b4e]
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
roqua-support-0.4.4	spec/roqua/core_ext/enumerable/sort_by_alphanum_spec.rb
roqua-support-0.4.3	spec/roqua/core_ext/enumerable/sort_by_alphanum_spec.rb