1 files changed, 18 insertions, 0 deletions
diff --git a/spec/ruby/core/string/freeze_spec.rb b/spec/ruby/core/string/freeze_spec.rb
new file mode 100644
index 0000000000..bd7c2fbc73
--- /dev/null
+++ b/spec/ruby/core/string/freeze_spec.rb
@@ -0,0 +1,18 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "String#freeze" do
+
+  it "produces the same object whenever called on an instance of a literal in the source" do
+    ids = Array.new(2) { "abc".freeze.object_id }
+    ids.first.should == ids.last
+  end
+
+  it "doesn't produce the same object for different instances of literals in the source" do
+    "abc".object_id.should_not == "abc".object_id
+  end
+
+  it "being a special form doesn't change the value of defined?" do
+    defined?("abc".freeze).should == "method"
+  end
+
+end