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/readchar.rb

@@ -0,0 +1,29 @@
+describe :stringio_readchar, shared: true do
+  before :each do
+    @io = StringIO.new("example")
+  end
+
+  it "correctly updates the current position" do
+    @io.send(@method)
+    @io.pos.should == 1
+
+    @io.send(@method)
+    @io.pos.should == 2
+  end
+
+  it "raises an EOFError when self is at the end" do
+    @io.pos = 7
+    lambda { @io.send(@method) }.should raise_error(EOFError)
+  end
+end
+
+describe :stringio_readchar_not_readable, shared: true do
+  it "raises an IOError" do
+    io = StringIO.new("a b c d e", "w")
+    lambda { io.send(@method) }.should raise_error(IOError)
+
+    io = StringIO.new("a b c d e")
+    io.close_read
+    lambda { io.send(@method) }.should raise_error(IOError)
+  end
+end