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-rw-r--r--test/psych/test_string.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/test/psych/test_string.rb b/test/psych/test_string.rb
index 2512bb68021..025ef9564ee 100644
--- a/test/psych/test_string.rb
+++ b/test/psych/test_string.rb
@@ -15,6 +15,11 @@ module Psych
end
end
+ def test_doublequotes_when_there_is_a_single
+ yaml = Psych.dump "@123'abc"
+ assert_match(/---\s*"/, yaml)
+ end
+
def test_dash_dot
assert_cycle '-.'
assert_cycle '+.'