1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_rational.rb b/test/ruby/test_rational.rb
index c5855a034..300215526 100644
--- a/test/ruby/test_rational.rb
+++ b/test/ruby/test_rational.rb
@@ -209,6 +209,8 @@ class Rational_Test < Test::Unit::TestCase
     assert_raise(ArgumentError){Rational(nil)}
     assert_raise(ArgumentError){Rational('')}
     assert_raise(ArgumentError){Rational(Object.new)}
+    assert_raise(ArgumentError){Rational()}
+    assert_raise(ArgumentError){Rational(1,2,3)}
   end
 
   def test_attr
@@ -1067,6 +1069,11 @@ class Rational_Test < Test::Unit::TestCase
     assert_equal(0.25, Rational(1,2).fdiv(2))
   end
 
+  def test_ruby19
+    assert_raise(NoMethodError){ Rational.new(1) }
+    assert_raise(NoMethodError){ Rational.new!(1) }
+  end
+
   def test_fixed_bug
     if defined?(Rational::Unify)
       assert_instance_of(Fixnum, Rational(1,2) ** 0) # mathn's bug