test_string.rb,test_symbol.rb: add some tests

* test/ruby/test_string.rb: add more test cases for String#casecmp.
* test/ruby/test_symbol.rb: ditto for Symbol#{casecmp,casecmp?}.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index 279c23cdb8..e7f3d5a527 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -286,15 +286,19 @@ class TestSymbol < Test::Unit::TestCase
     assert_equal(0, :FoO.casecmp(:fOO))
     assert_equal(1, :FoO.casecmp(:BaR))
     assert_equal(-1, :baR.casecmp(:FoO))
+
     assert_nil(:foo.casecmp("foo"))
+    assert_nil(:foo.casecmp(Object.new))
   end
 
   def test_casecmp?
     assert_equal(true, :FoO.casecmp?(:fOO))
     assert_equal(false, :FoO.casecmp?(:BaR))
     assert_equal(false, :baR.casecmp?(:FoO))
-    assert_nil(:foo.casecmp?("foo"))
     assert_equal(true, :äöü.casecmp?(:ÄÖÜ))
+
+    assert_nil(:foo.casecmp?("foo"))
+    assert_nil(:foo.casecmp?(Object.new))
   end
 
   def test_length