Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/file/setuid_spec.rb

@@ -0,0 +1,38 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../../../shared/file/setuid', __FILE__)
+
+describe "File.setuid?" do
+  it_behaves_like :file_setuid, :setuid?, File
+end
+
+describe "File.setuid?" do
+  before :each do
+    @name = tmp('test.txt')
+    touch @name
+  end
+
+  after :each do
+    rm_r @name
+  end
+
+  it "returns false if the file was just made" do
+    File.setuid?(@name).should == false
+  end
+
+  it "returns false if the file does not exist" do
+    rm_r @name # delete it prematurely, just for this part
+    File.setuid?(@name).should == false
+  end
+
+  platform_is_not :windows do
+    it "returns true when the gid bit is set" do
+      platform_is :solaris do
+        # Solaris requires execute bit before setting suid
+        system "chmod u+x #{@name}"
+      end
+      system "chmod u+s #{@name}"
+
+      File.setuid?(@name).should == true
+    end
+  end
+end