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-rw-r--r--spec/ruby/core/string/chilled_string_spec.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/spec/ruby/core/string/chilled_string_spec.rb b/spec/ruby/core/string/chilled_string_spec.rb
index 968e4ec1f0..73d055cbdf 100644
--- a/spec/ruby/core/string/chilled_string_spec.rb
+++ b/spec/ruby/core/string/chilled_string_spec.rb
@@ -47,6 +47,14 @@ describe "chilled String" do
input.should == "chilled-mutated"
end
+ it "emits a warning for concatenated strings" do
+ input = "still" "+chilled"
+ -> {
+ input << "-mutated"
+ }.should complain(/literal string will be frozen in the future/)
+ input.should == "still+chilled-mutated"
+ end
+
it "emits a warning on singleton_class creation" do
-> {
"chilled".singleton_class