Prepare for repo merge

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/unit-tests/utils/sets-test.ts

@@ -0,0 +1,48 @@
+/*
+Copyright 2024 New Vector Ltd.
+Copyright 2021 The Matrix.org Foundation C.I.C.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
+Please see LICENSE files in the repository root for full details.
+*/
+
+import { setHasDiff } from "../../src/utils/sets";
+
+describe("sets", () => {
+    describe("setHasDiff", () => {
+        it("should flag true on A length > B length", () => {
+            const a = new Set([1, 2, 3, 4]);
+            const b = new Set([1, 2, 3]);
+            const result = setHasDiff(a, b);
+            expect(result).toBe(true);
+        });
+
+        it("should flag true on A length < B length", () => {
+            const a = new Set([1, 2, 3]);
+            const b = new Set([1, 2, 3, 4]);
+            const result = setHasDiff(a, b);
+            expect(result).toBe(true);
+        });
+
+        it("should flag true on element differences", () => {
+            const a = new Set([1, 2, 3]);
+            const b = new Set([4, 5, 6]);
+            const result = setHasDiff(a, b);
+            expect(result).toBe(true);
+        });
+
+        it("should flag false if same but order different", () => {
+            const a = new Set([1, 2, 3]);
+            const b = new Set([3, 1, 2]);
+            const result = setHasDiff(a, b);
+            expect(result).toBe(false);
+        });
+
+        it("should flag false if same", () => {
+            const a = new Set([1, 2, 3]);
+            const b = new Set([1, 2, 3]);
+            const result = setHasDiff(a, b);
+            expect(result).toBe(false);
+        });
+    });
+});