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Fix loading objects with instance variables named "null" #191

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Fix loading objects with instance variables named "null" #191

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2 changes: 1 addition & 1 deletion lib/psych/visitors/yaml_tree.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -512,7 +512,7 @@ def dump_ivars target
ivars = find_ivars target

ivars.each do |iv|
@emitter.scalar("#{iv.to_s.sub(/^@/, '')}", nil, nil, true, false, Nodes::Scalar::ANY)
@emitter.scalar("#{iv.to_s.sub(/^@/, ':')}", nil, nil, true, false, Nodes::Scalar::ANY)
accept target.instance_variable_get(iv)
end
end
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15 changes: 15 additions & 0 deletions test/psych/test_object.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,14 @@ def initialize parent
end
end

class WithNull
attr_accessor :null

def initialize
@null = true
end
end

class TestObject < TestCase
def test_dump_with_tag
tag = Tagged.new
Expand All @@ -40,5 +48,12 @@ def test_cyclic_references
assert_instance_of(Foo, loaded)
assert_equal loaded, loaded.parent
end

def test_null_named_ivar
original = WithNull.new
loaded = Psych.load(Psych.dump(original))

assert_equal(original.null, loaded.null)
end
end
end