add tests for minus 1 enum value

Author: wing328

modules/openapi-generator/src/test/resources/3_0/ruby/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -1936,6 +1936,7 @@ components:
     OuterEnumInteger:
       type: integer
       enum:
+      - -1
       - 0
       - 1
       - 2

samples/client/petstore/ruby-faraday/docs/FakeApi.md

@@ -497,7 +497,7 @@ require 'time'
 require 'petstore'
 
 api_instance = Petstore::FakeApi.new
-outer_object_with_enum_property = Petstore::OuterObjectWithEnumProperty.new({value: Petstore::OuterEnumInteger::N0}) # OuterObjectWithEnumProperty | Input enum (int) as post body
+outer_object_with_enum_property = Petstore::OuterObjectWithEnumProperty.new({value: Petstore::OuterEnumInteger::NMINUS_1}) # OuterObjectWithEnumProperty | Input enum (int) as post body
 
 begin
 

samples/client/petstore/ruby-faraday/lib/petstore/models/outer_enum_integer.rb

@@ -15,12 +15,13 @@
 
 module Petstore
   class OuterEnumInteger
+    NMINUS_1 = -1.freeze
     N0 = 0.freeze
     N1 = 1.freeze
     N2 = 2.freeze
 
     def self.all_vars
-      @all_vars ||= [N0, N1, N2].freeze
+      @all_vars ||= [NMINUS_1, N0, N1, N2].freeze
     end
 
     # Builds the enum from string

samples/client/petstore/ruby-httpx/docs/FakeApi.md

@@ -497,7 +497,7 @@ require 'time'
 require 'petstore'
 
 api_instance = Petstore::FakeApi.new
-outer_object_with_enum_property = Petstore::OuterObjectWithEnumProperty.new({value: Petstore::OuterEnumInteger::N0}) # OuterObjectWithEnumProperty | Input enum (int) as post body
+outer_object_with_enum_property = Petstore::OuterObjectWithEnumProperty.new({value: Petstore::OuterEnumInteger::NMINUS_1}) # OuterObjectWithEnumProperty | Input enum (int) as post body
 
 begin
 

samples/client/petstore/ruby-httpx/lib/petstore/models/outer_enum_integer.rb

@@ -15,12 +15,13 @@
 
 module Petstore
   class OuterEnumInteger
+    NMINUS_1 = -1.freeze
     N0 = 0.freeze
     N1 = 1.freeze
     N2 = 2.freeze
 
     def self.all_vars
-      @all_vars ||= [N0, N1, N2].freeze
+      @all_vars ||= [NMINUS_1, N0, N1, N2].freeze
     end
 
     # Builds the enum from string

samples/client/petstore/ruby/docs/FakeApi.md

@@ -497,7 +497,7 @@ require 'time'
 require 'petstore'
 
 api_instance = Petstore::FakeApi.new
-outer_object_with_enum_property = Petstore::OuterObjectWithEnumProperty.new({value: Petstore::OuterEnumInteger::N0}) # OuterObjectWithEnumProperty | Input enum (int) as post body
+outer_object_with_enum_property = Petstore::OuterObjectWithEnumProperty.new({value: Petstore::OuterEnumInteger::NMINUS_1}) # OuterObjectWithEnumProperty | Input enum (int) as post body
 
 begin
 

samples/client/petstore/ruby/lib/petstore/models/outer_enum_integer.rb

@@ -15,12 +15,13 @@
 
 module Petstore
   class OuterEnumInteger
+    NMINUS_1 = -1.freeze
     N0 = 0.freeze
     N1 = 1.freeze
     N2 = 2.freeze
 
     def self.all_vars
-      @all_vars ||= [N0, N1, N2].freeze
+      @all_vars ||= [NMINUS_1, N0, N1, N2].freeze
     end
 
     # Builds the enum from string