From dca0b4177706c2cd9cda0d38af1b82752982e158 Mon Sep 17 00:00:00 2001 From: mrkn Date: Tue, 26 Jul 2011 15:49:47 +0000 Subject: * ext/bigdecimal/lib/bigdecimal/util.rb (Rational#to_d): zero or negative precision is error. fixes #5098. [ruby-dev:44210] * test/bigdecimal/test_bigdecimal_util.rb: add test for the above change. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32680 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/bigdecimal/test_bigdecimal_util.rb | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'test/bigdecimal/test_bigdecimal_util.rb') diff --git a/test/bigdecimal/test_bigdecimal_util.rb b/test/bigdecimal/test_bigdecimal_util.rb index 87b4f20e99..72342b922f 100644 --- a/test/bigdecimal/test_bigdecimal_util.rb +++ b/test/bigdecimal/test_bigdecimal_util.rb @@ -25,4 +25,19 @@ class TestBigDecimalUtil < Test::Unit::TestCase assert_in_delta(BigDecimal(0.5, 5), 0.5.to_d(digits), delta) assert_in_delta(BigDecimal(355.0/113.0, 5), (355.0/113.0).to_d(digits), delta) end + + def test_Rational_to_d + digits = 100 + delta = 1.0/10**(digits) + assert_in_delta(BigDecimal(1.quo(2), digits), 1.quo(2).to_d(digits), delta) + assert_in_delta(BigDecimal(355.quo(113), digits), 355.quo(113).to_d(digits), delta) + end + + def test_Rational_to_d_with_zero_precision + assert_raise(ArgumentError) { 355.quo(113).to_d(0) } + end + + def test_Rational_to_d_with_negative_precision + assert_raise(ArgumentError) { 355.quo(113).to_d(-42) } + end end -- cgit v1.2.3