diff options
Diffstat (limited to 'test/bigdecimal/test_bigdecimal_util.rb')
| -rw-r--r-- | test/bigdecimal/test_bigdecimal_util.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/bigdecimal/test_bigdecimal_util.rb b/test/bigdecimal/test_bigdecimal_util.rb index 5f03b734cf..87b4f20e99 100644 --- a/test/bigdecimal/test_bigdecimal_util.rb +++ b/test/bigdecimal/test_bigdecimal_util.rb @@ -12,4 +12,17 @@ class TestBigDecimalUtil < Test::Unit::TestCase assert_equal(BigDecimal(1), 1.to_d) assert_equal(BigDecimal(2<<100), (2<<100).to_d) end + + def test_Float_to_d_without_precision + delta = 1.0/10**(Float::DIG + 1) + assert_in_delta(BigDecimal(0.5, Float::DIG+1), 0.5.to_d, delta) + assert_in_delta(BigDecimal(355.0/113.0, Float::DIG+1), (355.0/113.0).to_d, delta) + end + + def test_Float_to_d_with_precision + digits = 5 + delta = 1.0/10**(digits) + 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 end |