add assertions for division NaN

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47023 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/test/ruby/test_fixnum.rb b/test/ruby/test_fixnum.rb
index c86cba3b7c..8b2cf2e256 100644
--- a/test/ruby/test_fixnum.rb
+++ b/test/ruby/test_fixnum.rb
@@ -74,6 +74,7 @@ class TestFixnum < Test::Unit::TestCase
     assert_equal(-0x4000000000000001, 0xc000000000000003/(-3))
     assert_equal(0x40000000, (-0x40000000)/(-1), "[ruby-dev:31210]")
     assert_equal(0x4000000000000000, (-0x4000000000000000)/(-1))
+    assert_raise(FloatDomainError) { 2.div(Float::NAN).nan? }
   end
 
   def test_mod
@@ -101,6 +102,7 @@ class TestFixnum < Test::Unit::TestCase
         assert_equal(r, a.modulo(b))
       }
     }
+    assert_raise(FloatDomainError) { 2.divmod(Float::NAN) }
   end
 
   def test_not
@@ -305,4 +307,9 @@ class TestFixnum < Test::Unit::TestCase
     assert_raise(ZeroDivisionError, bug5713) { 0 ** -big }
     assert_raise(ZeroDivisionError, bug5713) { 0 ** Rational(-2,3) }
   end
+
+  def test_remainder
+    assert_equal(1, 5.remainder(4))
+    assert_predicate(4.remainder(Float::NAN), :nan?)
+  end
 end