1 files changed, 18 insertions, 0 deletions
diff --git a/spec/ruby/core/string/shared/to_s.rb b/spec/ruby/core/string/shared/to_s.rb
new file mode 100644
index 0000000000..a5a13e4f26
--- /dev/null
+++ b/spec/ruby/core/string/shared/to_s.rb
@@ -0,0 +1,18 @@
+describe :string_to_s, shared: true do
+  it "returns self when self.class == String" do
+    a = "a string"
+    a.should equal(a.send(@method))
+  end
+
+  it "returns a new instance of String when called on a subclass" do
+    a = StringSpecs::MyString.new("a string")
+    s = a.send(@method)
+    s.should == "a string"
+    s.should be_an_instance_of(String)
+  end
+
+  it "taints the result when self is tainted" do
+    "x".taint.send(@method).tainted?.should == true
+    StringSpecs::MyString.new("x").taint.send(@method).tainted?.should == true
+  end
+end