* test/ruby/test_path.rb (test_basename): test for r19595.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22681 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_path.rb

@@ -189,6 +189,8 @@ class TestPath < Test::Unit::TestCase
     assert_equal('a', File.basename('/a/'))
     assert_equal('b', File.basename('/a/b'))
 
+    assert_equal("..", File.basename("..", ".*"))
+
     if /(bcc|ms|cyg)win|mingw|emx/ =~ RUBY_PLATFORM
       # DOSISH_UNC
       assert_equal('/', File.basename('//'))