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/library/stringio/shared/eof.rb

@@ -0,0 +1,24 @@
+describe :stringio_eof, shared: true do
+  before :each do
+    @io = StringIO.new("eof")
+  end
+
+  it "returns true when self's position is greater than or equal to self's size" do
+    @io.pos = 3
+    @io.send(@method).should be_true
+
+    @io.pos = 6
+    @io.send(@method).should be_true
+  end
+
+  it "returns false when self's position is less than self's size" do
+    @io.pos = 0
+    @io.send(@method).should be_false
+
+    @io.pos = 1
+    @io.send(@method).should be_false
+
+    @io.pos = 2
+    @io.send(@method).should be_false
+  end
+end