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-rw-r--r--activerecord/test/cases/nested_attributes_test.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/activerecord/test/cases/nested_attributes_test.rb b/activerecord/test/cases/nested_attributes_test.rb
index a9e93ad1b6..198cd6f341 100644
--- a/activerecord/test/cases/nested_attributes_test.rb
+++ b/activerecord/test/cases/nested_attributes_test.rb
@@ -1047,4 +1047,11 @@ class TestHasManyAutosaveAssociationWhichItselfHasAutosaveAssociations < ActiveR
ship.save!
end
end
+
+ test "nested singular associations are validated" do
+ part = ShipPart.new(name: "Stern", ship_attributes: { name: nil })
+
+ assert_not part.valid?
+ assert_equal ["Ship name can't be blank"], part.errors.full_messages
+ end
end