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ruby--ruby/spec/ruby/core/string/freeze_spec.rb

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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