Fix typo by renaming :genre to :gender.

activemodel/lib/active_model/validations/validates.rb

@@ -54,7 +54,7 @@ module ClassMethods
       # The validators hash can also handle regular expressions, ranges and arrays:
       #
       #   validates :email, :format => /@/
-      #   validates :genre, :inclusion => %w(mail female)
+      #   validates :gender, :inclusion => %w(mail female)
       #   validates :password, :length => 6..20
       #
       # Finally, the options :if, :unless, :on, :allow_blank and :allow_nil can be given

activemodel/test/cases/validations/validates_test.rb

@@ -70,20 +70,20 @@ def test_validates_with_regexp
   end
 
   def test_validates_with_array
-    Person.validates :genre, :inclusion => %w(m f)
+    Person.validates :gender, :inclusion => %w(m f)
     person = Person.new
     assert person.invalid?
-    assert_equal ['is not included in the list'], person.errors[:genre]
-    person.genre = "m"
+    assert_equal ['is not included in the list'], person.errors[:gender]
+    person.gender = "m"
     assert person.valid?
   end
 
   def test_validates_with_range
-    Person.validates :password, :length => 6..20
+    Person.validates :karma, :length => 6..20
     person = Person.new
     assert person.invalid?
-    assert_equal ['is too short (minimum is 6 characters)'], person.errors[:password]
-    person.password = '123456'
+    assert_equal ['is too short (minimum is 6 characters)'], person.errors[:karma]
+    person.karma = 'something'
     assert person.valid?
   end
 

activemodel/test/models/person.rb

@@ -2,7 +2,7 @@ class Person
   include ActiveModel::Validations
   extend  ActiveModel::Translation
 
-  attr_accessor :title, :karma, :salary, :genre, :password
+  attr_accessor :title, :karma, :salary, :gender
 
   def condition_is_true
     true