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-rw-r--r--test/ruby/test_string.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 869e31b641..29bc2672ec 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -1222,6 +1222,7 @@ class TestString < Test::Unit::TestCase
assert_equal(S("124"), S("123").succ)
assert_equal(S("1000"), S("999").succ)
+ assert_equal(S("No.10"), S("No.9").succ)
assert_equal(S("2000aaa"), S("1999zzz").succ)
assert_equal(S("AAAAA000"), S("ZZZZ999").succ)
assert_equal(S("*+"), S("**").succ)
@@ -1269,6 +1270,10 @@ class TestString < Test::Unit::TestCase
assert_equal(S("*+"), a.succ!)
assert_equal(S("*+"), a)
+ a = S("No.9")
+ assert_equal(S("No.10"), a.succ!)
+ assert_equal(S("No.10"), a)
+
assert_equal("aaaaaaaaaaaa", "zzzzzzzzzzz".succ!)
assert_equal("aaaaaaaaaaaaaaaaaaaaaaaa", "zzzzzzzzzzzzzzzzzzzzzzz".succ!)
end