Accept a symbol for `:in` option on inclusion and exclusion validators

1 files changed, 22 insertions, 0 deletions

diff --git a/activemodel/test/cases/validations/inclusion_validation_test.rb b/activemodel/test/cases/validations/inclusion_validation_test.rb
index c57fa75faf..92638f8e70 100644
--- a/activemodel/test/cases/validations/inclusion_validation_test.rb
+++ b/activemodel/test/cases/validations/inclusion_validation_test.rb
@@ -96,4 +96,26 @@ class InclusionValidationTest < ActiveModel::TestCase
     t.title = "elephant"
     assert t.valid?
   end
+
+  def test_validates_inclusion_of_with_symbol
+    Person.validates_inclusion_of :karma, :in => :available_karmas
+
+    p = Person.new
+    p.karma = "Lifo"
+
+    def p.available_karmas
+      %w()
+    end
+
+    assert p.invalid?
+    assert_equal ["is not included in the list"], p.errors[:karma]
+
+    def p.available_karmas
+      %w(Lifo)
+    end
+
+    assert p.valid?
+  ensure
+    Person.reset_callbacks(:validate)
+  end
 end