Add String#freeze test

69e835cd · Jun Hiroe · 1a45447b · 69e835cd
Commit 69e835cd authored Aug 27, 2015 by Jun Hiroe
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test/t/string.rb test/t/string.rb +8 -0

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--- 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
+