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-rw-r--r--activesupport/test/core_ext/module_test.rb27
1 files changed, 27 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/module_test.rb b/activesupport/test/core_ext/module_test.rb
index ccf537e075..283b13ff8b 100644
--- a/activesupport/test/core_ext/module_test.rb
+++ b/activesupport/test/core_ext/module_test.rb
@@ -66,6 +66,23 @@ Tester = Struct.new(:client) do
delegate :name, :to => :client, :prefix => false
end
+Product = Struct.new(:name) do
+ delegate :name, :to => :manufacturer, :prefix => true
+ delegate :name, :to => :type, :prefix => true
+
+ def manufacturer
+ @manufacturer ||= begin
+ nil.unknown_method
+ end
+ end
+
+ def type
+ @type ||= begin
+ nil.type_name
+ end
+ end
+end
+
class ParameterSet
delegate :[], :[]=, :to => :@params
@@ -264,6 +281,16 @@ class ModuleTest < ActiveSupport::TestCase
assert_equal [3], se.ints
end
+ def test_delegation_doesnt_mask_nested_no_method_error_on_nil_receiver
+ product = Product.new('Widget')
+
+ # Nested NoMethodError is a different name from the delegation
+ assert_raise(NoMethodError) { product.manufacturer_name }
+
+ # Nested NoMethodError is the same name as the delegation
+ assert_raise(NoMethodError) { product.type_name }
+ end
+
def test_parent
assert_equal Yz::Zy, Yz::Zy::Cd.parent
assert_equal Yz, Yz::Zy.parent