Example of redirect code in Ruby, plus tests

redirect-sample.rb

    elsif ors?
      case param_id
      when 'or', 'ors', 'ors_', 'ors_about'
        return ORS_ROOT

      when /^nrs_/
        return NRS_ROOT + '/' + param_id

      when /^tex\._/
        return TEXAS_STATUTES_ROOT + '/' + param_id

      when %r{^ors/chapter/([^/]+)$}i
        return ORS_ROOT + "/ors_chapter_#{$1}"

      when %r{^ors/([^/]+)$}i
        return ORS_ROOT + "/ors_#{$1}"

      when /^(ors_[0-9a-z.]+)\%/i
        return ORS_ROOT + "/#{$1}"

      when /^ors_([0-9a-z]+)$/i
        return ORS_ROOT + "/ors_chapter_#{$1}"

      when %r{^(?!(ors|crs|n\.y\.)_)}
        return ORS_ROOT

      when %r{^ors_[^/]+(/ors_[^/]+)$}
        return ORS_ROOT + $1
      end


    elsif texas_statutes?
      case param_id
      when /^tex\._bus\._org\._/
        return TEXAS_STATUTES_ROOT + '/' + param_id.sub( '_bus._org._', "_bus._orgs._" )

      when /^tex._code_of_crim._proc$/
        return TEXAS_STATUTES_ROOT + "/tex._code_of_crim._proc."

      when /^tex._code_of_crim._proc_/
        return TEXAS_STATUTES_ROOT + '/' + param_id.sub( "_proc_", "_proc._" )

      when /^tex\._govt\._/
        return TEXAS_STATUTES_ROOT + '/' + param_id.sub( '_govt._', "_gov't._" )

      when /^tex\._util\._/
        return TEXAS_STATUTES_ROOT + '/' + param_id.sub( "_util._", "_utils._" )

      when /_govt_/
        return TEXAS_STATUTES_ROOT + '/' + param_id.sub( "_govt_", "_gov't_" ) 

      when /^ors_/
        return ORS_ROOT + "/#{param_id}"

test-sample.rb

    describe 'fixes mis-matched URLs' do
      it 'fixes nrs under colorado' do
        actual = Publication.crs.create_perm_redirect('nrs_692c.390', request_uri: 'https://colorado.public.law/statutes/nrs_692c.390')
        expect(actual).to eq('https://nevada.public.law/statutes/nrs_692c.390')
      end

      it 'fixes ca under colorado' do
        actual = Publication.crs.create_perm_redirect('ca_penal_code_section_1203.4', request_uri: 'https://colorado.public.law/codes/ca_penal_code_section_1203.4')
        expect(actual).to eq('https://california.public.law/codes/ca_penal_code_section_1203.4')
      end

      it 'fixes nrs under oregon' do
        actual = Publication.ors.create_perm_redirect('nrs_692c.390', request_uri: 'https://oregon.public.law/statutes/nrs_692c.390')
        expect(actual).to eq('https://nevada.public.law/statutes/nrs_692c.390')
      end

      it 'fixes crs under oregon' do
        actual = Publication.ors.create_perm_redirect('crs_title_35_article_51', request_uri: 'https://oregon.public.law/statutes/crs_title_35_article_51')
        expect(actual).to eq('https://colorado.public.law/statutes/crs_title_35_article_51')
      end

      it 'fixes ny laws under oregon' do
        actual = Publication.ors.create_perm_redirect('n.y._general_municipal_law_section_891-e', request_uri: 'https://oregon.public.law/statutes/n.y._general_municipal_law_section_891-e')
        expect(actual).to eq('https://newyork.public.law/laws/n.y._general_municipal_law_section_891-e')
      end

      it 'fixes tex under oregon' do
        actual = Publication.ors.create_perm_redirect('tex._educ._code_section_21.105', request_uri: 'https://oregon.public.law/statutes/tex._educ._code_section_21.105')
        expect(actual).to eq('https://texas.public.law/statutes/tex._educ._code_section_21.105')
      end

      it 'fixes ors under california' do
        actual = Publication.california_codes.create_perm_redirect('ors_90.315', request_uri: 'https://california.public.law/codes/ors_90.315')
        expect(actual).to eq('https://oregon.public.law/statutes/ors_90.315')
      end

      it 'fixes crs under california' do
        actual = Publication.california_codes.create_perm_redirect('crs_title_35_article_51', request_uri: 'https://california.public.law/codes/crs_title_35_article_51')
        expect(actual).to eq('https://colorado.public.law/statutes/crs_title_35_article_51')
      end
    end
  end


  describe '#create_temp_redirect' do
    it 'redirects previous ORS editions' do
      actual = ors.create_temp_redirect('14', request_uri: 'https://oregon.public.law/ors/2009/volume/14')
      expect(actual).to eq('https://oregon.public.law/statutes/ors_volume_14')
    end

    context 'when is Texas Statutes' do
      it 'redirects RECORD-NOT-FOUND to statutes' do
        actual = texas_statutes.create_temp_redirect('RECORD-NOT-FOUND')
        expect(actual).to eq('https://texas.public.law/statutes')
      end

      it 'redirects anything else to statutes root' do
        actual = texas_statutes.create_temp_redirect("tex._gov't_code_section_806.103")
        expect(actual).to eq('https://texas.public.law/statutes')
      end
    end
  end