From cbfbd418cc15effe3376cfed875f86b99d71d34a Mon Sep 17 00:00:00 2001
From: Patryk <dev.droznyk@gmail.com>
Date: Fri, 23 Oct 2020 09:48:53 +0200
Subject: [PATCH] Revert "Improve Faker::Company.spanish_organisation_number
 (#2106)"

This reverts commit c57f585cb5fd8dc63d463fba205b0f09430c3bda.
---
 lib/faker/default/company.rb             | 38 ++----------------------
 test/faker/default/test_faker_company.rb | 30 ++-----------------
 2 files changed, 6 insertions(+), 62 deletions(-)

diff --git a/lib/faker/default/company.rb b/lib/faker/default/company.rb
index 00e4381829..1b1e486242 100644
--- a/lib/faker/default/company.rb
+++ b/lib/faker/default/company.rb
@@ -162,17 +162,10 @@ def profession
       # @faker.version 1.8.5
       #
       # Get a random Spanish organization number. See more here https://es.wikipedia.org/wiki/N%C3%BAmero_de_identificaci%C3%B3n_fiscal
-      def spanish_organisation_number(organization_type: nil)
+      def spanish_organisation_number
         # Valid leading character: A, B, C, D, E, F, G, H, J, N, P, Q, R, S, U, V, W
-        # format: 1 digit letter (organization type) + 7 digit numbers + 1 digit control (letter or number based on
-        # organization type)
-        letters = %w[A B C D E F G H J N P Q R S U V W]
-
-        organization_type = sample(letters) unless letters.include?(organization_type)
-        code = format('%07d', rand(10**7))
-        control = spanish_cif_control_digit(organization_type, code)
-
-        [organization_type, code, control].join
+        # 7 digit numbers
+        [sample(self::ULetters), format('%07d', rand(10**7))].join
       end
 
       ##
@@ -535,31 +528,6 @@ def inn_checksum(factor, number)
           end % 11 % 10
         ).to_s
       end
-
-      def spanish_cif_control_digit(organization_type, code)
-        letters = %w[J A B C D E F G H]
-
-        control = code.split('').each_with_index.inject(0) do |sum, (value, index)|
-          if (index + 1).even?
-            sum + value.to_i
-          else
-            sum + spanish_b_algorithm(value.to_i)
-          end
-        end
-
-        control = control.to_s[-1].to_i
-        control = control.zero? ? control : 10 - control
-
-        %w[A B C D E F G H J U V].include?(organization_type) ? control : letters[control]
-      end
-
-      def spanish_b_algorithm(value)
-        result = value.to_i * 2
-
-        return result if result < 10
-
-        result.to_s[0].to_i + result.to_s[1].to_i
-      end
     end
   end
 end
diff --git a/test/faker/default/test_faker_company.rb b/test/faker/default/test_faker_company.rb
index e0442942a8..87d97fddd0 100644
--- a/test/faker/default/test_faker_company.rb
+++ b/test/faker/default/test_faker_company.rb
@@ -28,8 +28,9 @@ def test_type
   end
 
   def test_spanish_organisation_number
-    cif = @tester.spanish_organisation_number(organization_type: 'A')
-    assert @tester.send(:spanish_cif_control_digit, 'A', cif[1..7]) == cif[-1].to_i
+    org_no = @tester.spanish_organisation_number
+    assert org_no.match(/\D\d{7}/)
+    assert Faker::Base::ULetters.include?(org_no[0].to_s)
   end
 
   def test_swedish_organisation_number
@@ -210,31 +211,6 @@ def test_sic_code
     assert @tester.sic_code.match(/\d\d\d\d/)
   end
 
-  def test_spanish_cif_control_digit
-    assert @tester.send(:spanish_cif_control_digit, 'A', '2217680') == 4
-    assert @tester.send(:spanish_cif_control_digit, 'B', '4031315') == 7
-    assert @tester.send(:spanish_cif_control_digit, 'C', '7191088') == 9
-    assert @tester.send(:spanish_cif_control_digit, 'D', '3178686') == 6
-    assert @tester.send(:spanish_cif_control_digit, 'E', '4484441') == 3
-    assert @tester.send(:spanish_cif_control_digit, 'F', '4830511') == 4
-    assert @tester.send(:spanish_cif_control_digit, 'G', '7676903') == 3
-    assert @tester.send(:spanish_cif_control_digit, 'H', '8888075') == 2
-    assert @tester.send(:spanish_cif_control_digit, 'J', '6840041') == 5
-    assert @tester.send(:spanish_cif_control_digit, 'N', '5350867') == 'G'
-    assert @tester.send(:spanish_cif_control_digit, 'P', '5669582') == 'H'
-    assert @tester.send(:spanish_cif_control_digit, 'Q', '5182823') == 'D'
-    assert @tester.send(:spanish_cif_control_digit, 'R', '1099088') == 'E'
-    assert @tester.send(:spanish_cif_control_digit, 'S', '2210399') == 'H'
-    assert @tester.send(:spanish_cif_control_digit, 'U', '3957325') == 8
-    assert @tester.send(:spanish_cif_control_digit, 'V', '7536342') == 4
-    assert @tester.send(:spanish_cif_control_digit, 'W', '6793772') == 'B'
-  end
-
-  def test_spanish_b_algorithm
-    assert @tester.send(:spanish_b_algorithm, 2) == 4
-    assert @tester.send(:spanish_b_algorithm, 6) == 3
-  end
-
   private
 
   def czech_o_n_checksum(org_no)