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-rw-r--r--activerecord/test/cases/associations/has_many_associations_test.rb12
1 files changed, 12 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index f7b2b42959..a28b8e6651 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -1686,4 +1686,16 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
assert_equal [bulb2], car.bulbs
assert_equal [bulb2], car.reload.bulbs
end
+
+ def test_replace_returns_new_target
+ car = Car.create(:name => 'honda')
+ bulb1 = car.bulbs.create
+ bulb2 = car.bulbs.create
+ bulb3 = Bulb.create
+
+ assert_equal [bulb1, bulb2], car.bulbs
+ result = car.bulbs.replace([bulb1, bulb3])
+ assert_equal [bulb1, bulb3], car.bulbs
+ assert_equal [bulb1, bulb3], result
+ end
end