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Diffstat (limited to 'test/ruby/test_math.rb')
| -rw-r--r-- | test/ruby/test_math.rb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/test/ruby/test_math.rb b/test/ruby/test_math.rb index e547cb77ec..c17b21a53d 100644 --- a/test/ruby/test_math.rb +++ b/test/ruby/test_math.rb @@ -255,6 +255,10 @@ class TestMath < Test::Unit::TestCase end assert_raise(Math::DomainError) { Math.gamma(-Float::INFINITY) } + x = Math.gamma(-0.0) + mesg = "Math.gamma(-0.0) should be -INF" + assert_infinity(x, mesg) + assert_predicate(x, :negative?, mesg) end def test_lgamma |