* array.c (rb_ary_shuffle_bang): check number of argument.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 4a8b700c77..4c3aba0589 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -1893,6 +1893,7 @@ class TestArray < Test::Unit::TestCase
     end
 
     gen = Random.new(0)
+    assert_raise(ArgumentError) {[1, 2, 3].shuffle(1, random: gen)}
     srand(0)
     100.times do
       assert_equal([0, 1, 2].shuffle, [0, 1, 2].shuffle(random: gen))