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/string/chr_spec.rb

@@ -0,0 +1,44 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+with_feature :encoding do
+  describe "String#chr" do
+    it "returns a copy of self" do
+      s = 'e'
+      s.object_id.should_not == s.chr.object_id
+    end
+
+    it "returns a String" do
+      'glark'.chr.should be_an_instance_of(String)
+    end
+
+    it "returns an empty String if self is an empty String" do
+      "".chr.should == ""
+    end
+
+    it "returns a 1-character String" do
+      "glark".chr.size.should == 1
+    end
+
+    it "returns the character at the start of the String" do
+      "Goodbye, world".chr.should == "G"
+    end
+
+    it "returns a String in the same encoding as self" do
+      "\x24".encode(Encoding::US_ASCII).chr.encoding.should == Encoding::US_ASCII
+    end
+
+    it "understands multi-byte characters" do
+      s = "\u{9879}"
+      s.bytesize.should == 3
+      s.chr.should == s
+    end
+
+    it "understands Strings that contain a mixture of character widths" do
+      three = "\u{8082}"
+      three.bytesize.should == 3
+      four = "\u{77082}"
+      four.bytesize.should == 4
+      "#{three}#{four}".chr.should == three
+    end
+  end
+end