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require File.expand_path('../../../spec_helper', __FILE__)
require 'bigdecimal'
describe "BigDecimal#nonzero?" do
it "returns self if self doesn't equal zero" do
# documentation says, it returns true. (04/10/08)
e2_plus = BigDecimal("2E40001")
e3_minus = BigDecimal("3E-20001")
infinity = BigDecimal("Infinity")
infinity_minus = BigDecimal("-Infinity")
nan = BigDecimal("NaN")
infinity.nonzero?.should equal(infinity)
infinity_minus.nonzero?.should equal(infinity_minus)
nan.nonzero?.should equal(nan)
e3_minus.nonzero?.should equal(e3_minus)
e2_plus.nonzero?.should equal(e2_plus)
end
it "returns nil otherwise" do
# documentation states, it should return false. (04/10/08)
really_small_zero = BigDecimal("0E-200000000")
really_big_zero = BigDecimal("0E200000000000")
really_small_zero.nonzero?.should == nil
really_big_zero.nonzero?.should == nil
BigDecimal("0.000000000000000000000000").nonzero?.should == nil
end
end
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