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Diffstat (limited to 'test/t/string.rb')
| -rw-r--r-- | test/t/string.rb | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/test/t/string.rb b/test/t/string.rb index ee6fe0848..7326adce9 100644 --- a/test/t/string.rb +++ b/test/t/string.rb @@ -542,3 +542,11 @@ assert('String#each_byte') do assert_equal bytes1, bytes2 end + +assert('String#freeze') do + str = "hello" + str.freeze + + assert_raise(RuntimeError) { str.upcase! } +end + |