1 files changed, 10 insertions, 2 deletions
diff --git a/test/ruby/test_path.rb b/test/ruby/test_path.rb
index 2db7be0b76..b35e942a2a 100644
--- a/test/ruby/test_path.rb
+++ b/test/ruby/test_path.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class TestPath < Test::Unit::TestCase
@@ -230,12 +231,19 @@ class TestPath < Test::Unit::TestCase
     assert_equal('', File.extname('a'))
     ext = '.rb'
     assert_equal(ext, File.extname('a.rb'))
+    assert_equal(ext, File.extname('.a.rb'))
+    assert_equal(ext, File.extname('a/b/d/test.rb'))
+    assert_equal(ext, File.extname('.a/b/d/test.rb'))
     unless /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
       # trailing spaces and dots are ignored on NTFS.
-      ext = ''
+      ext = '.'
     end
     assert_equal(ext, File.extname('a.rb.'))
-    assert_equal('', File.extname('a.'))
+    if /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
+      # trailing spaces and dots are ignored on NTFS.
+      ext = ''
+    end
+    assert_equal(ext, File.extname('a.'))
     assert_equal('', File.extname('.x'))
     assert_equal('', File.extname('..x'))
   end