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-rw-r--r--test/ruby/test_m17n.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/ruby/test_m17n.rb b/test/ruby/test_m17n.rb
index f6c4a19088..a29d509fc4 100644
--- a/test/ruby/test_m17n.rb
+++ b/test/ruby/test_m17n.rb
@@ -933,6 +933,10 @@ class TestM17N < Test::Unit::TestCase
def test_aset
s = e("\xa3\xb0\xa3\xb1\xa3\xb2\xa3\xb3\xa3\xb4")
assert_raise(Encoding::CompatibilityError){s["\xb0\xa3"] = "foo"}
+
+ a = ua("a")
+ a[/a/] = u("")
+ assert_equal Encoding::US_ASCII, a.encoding
end
def test_str_center