diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/bigdecimal/test_bigdecimal.rb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/bigdecimal/test_bigdecimal.rb b/test/bigdecimal/test_bigdecimal.rb index 467b5e1b0b..53979340a1 100644 --- a/test/bigdecimal/test_bigdecimal.rb +++ b/test/bigdecimal/test_bigdecimal.rb @@ -343,6 +343,16 @@ class TestBigDecimal < Test::Unit::TestCase BigDecimal.mode(BigDecimal::EXCEPTION_OVERFLOW, false) assert_kind_of(Float, x .to_f) assert_kind_of(Float, (-x).to_f) + + BigDecimal.mode(BigDecimal::EXCEPTION_UNDERFLOW, true) + assert_raise(FloatDomainError) { + BigDecimal("1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f } + assert_raise(FloatDomainError) { + BigDecimal("-1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f } + + BigDecimal.mode(BigDecimal::EXCEPTION_UNDERFLOW, false) + assert_equal( 0.0, BigDecimal("1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f) + assert_equal(-0.0, BigDecimal("-1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f) end def test_coerce |