1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/tests/test262/harness/deepEqual-circular.js b/js/src/tests/test262/harness/deepEqual-circular.js
new file mode 100644
index 0000000000..c2be2c27b9
--- /dev/null
+++ b/js/src/tests/test262/harness/deepEqual-circular.js
@@ -0,0 +1,19 @@
+// Copyright 2019 Ron Buckton. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+  values compare correctly with circular references.
+includes: [deepEqual.js]
+---*/
+
+var a = { x: 1 };
+var b = { x: 1 };
+a.a = a;
+a.b = b;
+b.a = b;
+b.b = a;
+
+assert.deepEqual(a, b);
+
+reportCompare(0, 0);