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-rw-r--r--test/ruby/test_string.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 539a5a4623..6bac7f1fee 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -25,6 +25,7 @@ class TestString < Test::Unit::TestCase
assert_equal("124", "123".succ)
assert_equal("1000", "999".succ)
+ assert_equal("2.000", "1.999".succ)
assert_equal("No.10", "No.9".succ)
assert_equal("2000aaa", "1999zzz".succ)