From 8d35453f015b53d4f9a159ea6a494bfb227cd702 Mon Sep 17 00:00:00 2001
From: mike12345567 <me@michaeldrury.co.uk>
Date: Tue, 7 Nov 2023 13:56:42 +0000
Subject: [PATCH] Adding test case for circular detection.

---
 packages/backend-core/src/utils/tests/utils.spec.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/packages/backend-core/src/utils/tests/utils.spec.ts b/packages/backend-core/src/utils/tests/utils.spec.ts
index 5a0ac4f283..7b411e801c 100644
--- a/packages/backend-core/src/utils/tests/utils.spec.ts
+++ b/packages/backend-core/src/utils/tests/utils.spec.ts
@@ -188,4 +188,17 @@ describe("utils", () => {
       expectResult(false)
     })
   })
+
+  describe("hasCircularStructure", () => {
+    it("should detect a circular structure", () => {
+      const a: any = { b: "b" }
+      const b = { a }
+      a.b = b
+      expect(utils.hasCircularStructure(b)).toBe(true)
+    })
+
+    it("should allow none circular structures", () => {
+      expect(utils.hasCircularStructure({ a: "b" })).toBe(false)
+    })
+  })
 })