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-rw-r--r--activerecord/test/cases/associations/has_many_associations_test.rb31
1 files changed, 31 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 1ddd380f23..781b87741d 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -789,6 +789,37 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
end
end
+ def test_calling_update_attributes_on_id_changes_the_counter_cache
+ topic = Topic.order("id ASC").first
+ original_count = topic.replies.to_a.size
+ assert_equal original_count, topic.replies_count
+
+ first_reply = topic.replies.first
+ first_reply.update_attributes(:parent_id => nil)
+ assert_equal original_count - 1, topic.reload.replies_count
+
+ first_reply.update_attributes(:parent_id => topic.id)
+ assert_equal original_count, topic.reload.replies_count
+ end
+
+ def test_calling_update_attributes_changing_ids_doesnt_change_counter_cache
+ topic1 = Topic.find(1)
+ topic2 = Topic.find(3)
+ original_count1 = topic1.replies.to_a.size
+ original_count2 = topic2.replies.to_a.size
+
+ reply1 = topic1.replies.first
+ reply2 = topic2.replies.first
+
+ reply1.update_attributes(:parent_id => topic2.id)
+ assert_equal original_count1 - 1, topic1.reload.replies_count
+ assert_equal original_count2 + 1, topic2.reload.replies_count
+
+ reply2.update_attributes(:parent_id => topic1.id)
+ assert_equal original_count1, topic1.reload.replies_count
+ assert_equal original_count2, topic2.reload.replies_count
+ end
+
def test_deleting_a_collection
force_signal37_to_load_all_clients_of_firm
companies(:first_firm).clients_of_firm.create("name" => "Another Client")