1 files changed, 44 insertions, 9 deletions
diff --git a/spec/ruby/core/file/to_path_spec.rb b/spec/ruby/core/file/to_path_spec.rb
index 3dc801cc27..b968d3b2b9 100644
--- a/spec/ruby/core/file/to_path_spec.rb
+++ b/spec/ruby/core/file/to_path_spec.rb
@@ -1,9 +1,9 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "File#to_path" do
   before :each do
-    @name = "file_to_path"
-    @path = tmp(@name)
+    @path = tmp("file_to_path")
+    @name = File.basename(@path)
     touch @path
   end
 
@@ -14,7 +14,31 @@ describe "File#to_path" do
 
   it "returns a String" do
     @file = File.new @path
-    @file.to_path.should be_an_instance_of(String)
+    @file.to_path.should.instance_of?(String)
+  end
+
+  it "returns a different String on every call" do
+    @file = File.new @path
+    path1 = @file.to_path
+    path2 = @file.to_path
+    path1.should == path2
+    path1.should_not.equal?(path2)
+  end
+
+  it "returns a mutable String" do
+    @file = File.new @path.dup.freeze
+    path = @file.to_path
+    path.should == @path
+    path.should_not.frozen?
+    path << "test"
+    @file.to_path.should == @path
+  end
+
+  it "calls to_str on argument and returns exact value" do
+    path = mock('path')
+    path.should_receive(:to_str).and_return(@path)
+    @file = File.new path
+    @file.to_path.should == @path
   end
 
   it "does not normalise the path it returns" do
@@ -39,11 +63,22 @@ describe "File#to_path" do
     end
   end
 
-  with_feature :encoding do
-    it "preserves the encoding of the path" do
-      path = @path.force_encoding("euc-jp")
-      @file = File.new path
-      @file.to_path.encoding.should == Encoding.find("euc-jp")
+  it "preserves the encoding of the path" do
+    path = @path.force_encoding("euc-jp")
+    @file = File.new path
+    @file.to_path.encoding.should == Encoding.find("euc-jp")
+  end
+
+  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
     end
   end
 end