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-rw-r--r--test/psych/test_deprecated.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/test/psych/test_deprecated.rb b/test/psych/test_deprecated.rb
index c93b36ed44..f5ff79b56d 100644
--- a/test/psych/test_deprecated.rb
+++ b/test/psych/test_deprecated.rb
@@ -163,5 +163,13 @@ module Psych
assert_equal [["tag:ruby.yaml.org,2002:foo", "bar"]], types
end
+
+ def test_detect_implicit
+ assert_equal '', Psych.detect_implicit(nil)
+ assert_equal '', Psych.detect_implicit(Object.new)
+ assert_equal '', Psych.detect_implicit(1.2)
+ assert_equal 'null', Psych.detect_implicit('')
+ assert_equal 'string', Psych.detect_implicit('foo')
+ end
end
end