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-rw-r--r--test/ruby/test_sprintf.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/ruby/test_sprintf.rb b/test/ruby/test_sprintf.rb
index 501930a1e5..5732cecbf9 100644
--- a/test/ruby/test_sprintf.rb
+++ b/test/ruby/test_sprintf.rb
@@ -177,6 +177,10 @@ class TestSprintf < Test::Unit::TestCase
assert_equal("x"*10+" 1.0", sprintf("x"*10+"%8.1f", 1r), bug11766)
end
+ def test_rational_precision
+ assert_match(/\A0\.\d{600}\z/, sprintf("%.600f", 600**~60))
+ end
+
def test_hash
options = {:capture=>/\d+/}
assert_equal("with options {:capture=>/\\d+/}", sprintf("with options %p" % options))