test_process.rb (test_maxgroups): add assertions

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/test/ruby/test_process.rb b/test/ruby/test_process.rb
index f300444ecc..d68aef624e 100644
--- a/test/ruby/test_process.rb
+++ b/test/ruby/test_process.rb
@@ -1512,8 +1512,13 @@ class TestProcess < Test::Unit::TestCase
   end
 
   def test_maxgroups
-    assert_kind_of(Integer, Process.maxgroups)
+    max = Process.maxgroups
   rescue NotImplementedError
+  else
+    assert_kind_of(Integer, max)
+    gs = Process.groups
+    assert_operator(gs.size, :<=, max)
+    assert_raise(ArgumentError) {Process.groups = gs * (max / gs.size + 1)}
   end
 
   def test_geteuid