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-rw-r--r--activerecord/test/cases/associations/eager_test.rb6
1 files changed, 4 insertions, 2 deletions
diff --git a/activerecord/test/cases/associations/eager_test.rb b/activerecord/test/cases/associations/eager_test.rb
index cb07ca5cd3..f18c6177ac 100644
--- a/activerecord/test/cases/associations/eager_test.rb
+++ b/activerecord/test/cases/associations/eager_test.rb
@@ -1501,8 +1501,10 @@ class EagerAssociationTest < ActiveRecord::TestCase
assert_equal posts(:welcome), post
end
- test "eager-loading with a polymorphic association and using the existential predicate" do
- assert_equal true, authors(:david).essays.eager_load(:writer).exists?
+ test "eager-loading with a polymorphic association won't work consistently" do
+ assert_raise(ActiveRecord::EagerLoadPolymorphicError) { authors(:david).essays.eager_load(:writer).to_a }
+ assert_raise(ActiveRecord::EagerLoadPolymorphicError) { authors(:david).essays.eager_load(:writer).count }
+ assert_raise(ActiveRecord::EagerLoadPolymorphicError) { authors(:david).essays.eager_load(:writer).exists? }
end
# CollectionProxy#reader is expensive, so the preloader avoids calling it.