require "abstract_unit" require "active_support/core_ext/big_decimal" class BigDecimalTest < ActiveSupport::TestCase def test_to_s bd = BigDecimal.new "0.01" assert_equal "0.01", bd.to_s assert_equal "+0.01", bd.to_s("+F") assert_equal "+0.0 1", bd.to_s("+1F") end end