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-rw-r--r--jni/ruby/test/-ext-/string/test_enc_associate.rb12
1 files changed, 12 insertions, 0 deletions
diff --git a/jni/ruby/test/-ext-/string/test_enc_associate.rb b/jni/ruby/test/-ext-/string/test_enc_associate.rb
new file mode 100644
index 0000000..edddfb4
--- /dev/null
+++ b/jni/ruby/test/-ext-/string/test_enc_associate.rb
@@ -0,0 +1,12 @@
+require 'test/unit'
+require "-test-/string/string"
+
+class Test_StrEncAssociate < Test::Unit::TestCase
+ def test_frozen
+ s = Bug::String.new("abc")
+ s.force_encoding(Encoding::US_ASCII)
+ s.freeze
+ assert_raise(RuntimeError) {s.associate_encoding!(Encoding::US_ASCII)}
+ assert_raise(RuntimeError) {s.associate_encoding!(Encoding::UTF_8)}
+ end
+end