1 files changed, 28 insertions, 23 deletions
diff --git a/spec/ruby/core/file/shared/path.rb b/spec/ruby/core/file/shared/path.rb
index cfd119f799..6c6f7d4234 100644
--- a/spec/ruby/core/file/shared/path.rb
+++ b/spec/ruby/core/file/shared/path.rb
@@ -1,7 +1,7 @@
 describe :file_path, shared: true do
   before :each do
-    @name = "file_to_path"
-    @path = tmp(@name)
+    @path = tmp("file_to_path")
+    @name = File.basename(@path)
     touch @path
   end
 
@@ -12,7 +12,24 @@ describe :file_path, shared: true do
 
   it "returns a String" do
     @file = File.new @path
-    @file.send(@method).should be_an_instance_of(String)
+    @file.send(@method).should.instance_of?(String)
+  end
+
+  it "returns a different String on every call" do
+    @file = File.new @path
+    path1 = @file.send(@method)
+    path2 = @file.send(@method)
+    path1.should == path2
+    path1.should_not.equal?(path2)
+  end
+
+  it "returns a mutable String" do
+    @file = File.new @path.dup.freeze
+    path = @file.send(@method)
+    path.should == @path
+    path.should_not.frozen?
+    path << "test"
+    @file.send(@method).should == @path
   end
 
   it "calls to_str on argument and returns exact value" do
@@ -50,27 +67,15 @@ describe :file_path, shared: true do
     @file.send(@method).encoding.should == Encoding.find("euc-jp")
   end
 
-  ruby_version_is "2.5" do
-    platform_is :linux do
-      guard -> { defined?(File::TMPFILE) } do
-        before :each do
-          @dir = tmp("tmpfilespec")
-          mkdir_p @dir
-        end
-
-        after :each do
-          rm_r @dir
-        end
+  platform_is :linux do
+    guard -> { defined?(File::TMPFILE) } do
+      before :each do
+        @dir = tmp("tmpfilespec")
+        mkdir_p @dir
+      end
 
-        it "raises IOError if file was opened with File::TMPFILE" do
-          begin
-            File.open(@dir, File::RDWR | File::TMPFILE) do |f|
-              -> { f.send(@method) }.should raise_error(IOError)
-            end
-          rescue Errno::EOPNOTSUPP, Errno::EINVAL, Errno::EISDIR
-            skip "no support from the filesystem"
-          end
-        end
+      after :each do
+        rm_r @dir
       end
     end
   end