1 files changed, 11 insertions, 2 deletions
diff --git a/spec/ruby/core/string/to_s_spec.rb b/spec/ruby/core/string/to_s_spec.rb
index e5872745a8..c48c7f89ac 100644
--- a/spec/ruby/core/string/to_s_spec.rb
+++ b/spec/ruby/core/string/to_s_spec.rb
@@ -1,7 +1,16 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
-require_relative 'shared/to_s'
 
 describe "String#to_s" do
-  it_behaves_like :string_to_s, :to_s
+  it "returns self when self.class == String" do
+    a = "a string"
+    a.should.equal?(a.to_s)
+  end
+
+  it "returns a new instance of String when called on a subclass" do
+    a = StringSpecs::MyString.new("a string")
+    s = a.to_s
+    s.should == "a string"
+    s.should.instance_of?(String)
+  end
 end