Add test coverage (#23341)

test/unit-tests/vector/routing-test.ts

@@ -0,0 +1,43 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { onNewScreen } from "../../../src/vector/routing";
+
+describe("onNewScreen", () => {
+    it("should replace history if stripping via fields", () => {
+        delete window.location;
+        window.location = {
+            hash: "#/room/!room:server?via=abc",
+            replace: jest.fn(),
+            assign: jest.fn(),
+        } as unknown as Location;
+        onNewScreen("room/!room:server");
+        expect(window.location.assign).not.toHaveBeenCalled();
+        expect(window.location.replace).toHaveBeenCalled();
+    });
+
+    it("should not replace history if changing rooms", () => {
+        delete window.location;
+        window.location = {
+            hash: "#/room/!room1:server?via=abc",
+            replace: jest.fn(),
+            assign: jest.fn(),
+        } as unknown as Location;
+        onNewScreen("room/!room2:server");
+        expect(window.location.assign).toHaveBeenCalled();
+        expect(window.location.replace).not.toHaveBeenCalled();
+    });
+});