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/fixnum/uminus_spec.rb

@@ -0,0 +1,16 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Fixnum#-@" do
+  it "returns self as a negative value" do
+    2.send(:-@).should == -2
+    -2.should == -2
+    -268435455.should == -268435455
+    (--5).should == 5
+    -8.send(:-@).should == 8
+  end
+
+  it "negates self at Fixnum/Bignum boundaries" do
+    fixnum_max.send(:-@).should == (0 - fixnum_max)
+    fixnum_min.send(:-@).should == (0 - fixnum_min)
+  end
+end