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-rw-r--r--activerecord/test/cases/associations/belongs_to_associations_test.rb13
1 files changed, 13 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index 7c913bc78b..6d01fcf50c 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -578,6 +578,19 @@ class BelongsToAssociationsTest < ActiveRecord::TestCase
assert_nil essay.writer_id
end
+ def test_polymorphic_assignment_with_nil
+ essay = Essay.new
+ assert_nil essay.writer_id
+ assert_nil essay.writer_type
+
+ essay.writer_id = 1
+ essay.writer_type = 'Author'
+
+ essay.writer = nil
+ assert_nil essay.writer_id
+ assert_nil essay.writer_type
+ end
+
def test_belongs_to_proxy_should_not_respond_to_private_methods
assert_raise(NoMethodError) { companies(:first_firm).private_method }
assert_raise(NoMethodError) { companies(:second_client).firm.private_method }