Should return "." for File.extname("file.") also on Windows

But not changes another cases, such as "file.rb."
[Bug #15267]

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/ruby/core/file/extname_spec.rb b/spec/ruby/core/file/extname_spec.rb
index e9b53bc24d..79290960fb 100644
--- a/spec/ruby/core/file/extname_spec.rb
+++ b/spec/ruby/core/file/extname_spec.rb
@@ -23,14 +23,14 @@ describe "File.extname" do
   end
 
   describe "for a filename ending with a dot" do
-    guard -> { platform_is :windows or ruby_version_is ""..."2.7" } do
+    ruby_version_is ""..."2.7" do
       it "returns ''" do
         File.extname(".foo.").should == ""
         File.extname("foo.").should == ""
       end
     end
 
-    guard -> { platform_is_not :windows and ruby_version_is "2.7" } do
+    ruby_version_is "2.7" do
       it "returns '.'" do
         File.extname(".foo.").should == "."
         File.extname("foo.").should == "."