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-rw-r--r--test/ruby/test_string.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 407c6d2ab1..5d8edc1684 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -218,6 +218,13 @@ class TestString < Test::Unit::TestCase
l = s.size
s << "bar"
assert_equal(l + 3, s.size)
+
+ bug = '[ruby-core:27583]'
+ assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -3}
+ assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -2}
+ assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -1}
+ assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << 0x81308130}
+ assert_nothing_raised {S("a".force_encoding(Encoding::GB18030)) << 0x81308130}
end
def test_MATCH # '=~'