From 0b7cfdca09651f2eae5cd0e8ae4efed5033493f2 Mon Sep 17 00:00:00 2001
From: Alexander Momchilov <alexander.momchilov@shopify.com>
Date: Fri, 22 Jul 2022 16:45:03 -0400
Subject: [ruby/psych] Test that recursive refs dump as aliases

https://github.com/ruby/psych/commit/d9f7289190
---
 test/psych/test_array.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'test/psych/test_array.rb')

diff --git a/test/psych/test_array.rb b/test/psych/test_array.rb
index 28b76da785..a6be0baf2f 100644
--- a/test/psych/test_array.rb
+++ b/test/psych/test_array.rb
@@ -57,6 +57,19 @@ module Psych
       assert_cycle(@list)
     end
 
+    def test_recursive_array_uses_alias
+      @list << @list
+
+      expected = <<~eoyaml
+        --- &1
+        - :a: b
+        - foo
+        - *1
+      eoyaml
+
+      assert_equal expected, Psych.dump(@list)
+    end
+
     def test_cycle
       assert_cycle(@list)
     end
-- 
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