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require_relative 'helper' module Psych class TestNil < TestCase def test_nil yml = Psych.dump nil assert_match(/--- \n(?:\.\.\.\n)?/, yml) assert_nil Psych.load(yml) end def test_array_nil yml = Psych.dump [nil] assert_equal "---\n- \n", yml assert_equal [nil], Psych.load(yml) end end end