Support dynamic room predecessors in AddExistingToSpaceDialog (#10342)

test/components/views/spaces/AddExistingToSpaceDialog-test.tsx

@@ -0,0 +1,77 @@
+/*
+Copyright 2023 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 { render } from "@testing-library/react";
+import { mocked } from "jest-mock";
+import { MatrixClient } from "matrix-js-sdk/src/matrix";
+import React from "react";
+
+import AddExistingToSpaceDialog from "../../../../src/components/views/dialogs/AddExistingToSpaceDialog";
+import SettingsStore from "../../../../src/settings/SettingsStore";
+import DMRoomMap from "../../../../src/utils/DMRoomMap";
+import { mkSpace, stubClient } from "../../../test-utils";
+
+describe("<AddExistingToSpaceDialog />", () => {
+    it("looks as expected", () => {
+        const client = stubClient();
+        const dialog = renderAddExistingToSpaceDialog(client);
+        expect(dialog.asFragment()).toMatchSnapshot();
+    });
+
+    describe("If the feature_dynamic_room_predecessors is not enabled", () => {
+        beforeEach(() => {
+            jest.spyOn(SettingsStore, "getValue").mockReturnValue(false);
+        });
+
+        it("Passes through the dynamic predecessor setting", async () => {
+            const client = stubClient();
+            mocked(client.getVisibleRooms).mockClear();
+            renderAddExistingToSpaceDialog(client);
+            expect(client.getVisibleRooms).toHaveBeenCalledWith(false);
+        });
+    });
+
+    describe("If the feature_dynamic_room_predecessors is enabled", () => {
+        beforeEach(() => {
+            // Turn on feature_dynamic_room_predecessors setting
+            jest.spyOn(SettingsStore, "getValue").mockImplementation(
+                (settingName) => settingName === "feature_dynamic_room_predecessors",
+            );
+        });
+
+        it("Passes through the dynamic predecessor setting", async () => {
+            const client = stubClient();
+            mocked(client.getVisibleRooms).mockClear();
+            renderAddExistingToSpaceDialog(client);
+            expect(client.getVisibleRooms).toHaveBeenCalledWith(true);
+        });
+    });
+});
+
+function renderAddExistingToSpaceDialog(client: MatrixClient) {
+    const dmRoomMap = new DMRoomMap(client);
+    jest.spyOn(DMRoomMap, "shared").mockReturnValue(dmRoomMap);
+    const space = mkSpace(client, "!spaceid:example.com");
+    const dialog = render(
+        <AddExistingToSpaceDialog
+            space={space}
+            onCreateRoomClick={jest.fn()}
+            onAddSubspaceClick={jest.fn()}
+            onFinished={jest.fn()}
+        />,
+    );
+    return dialog;
+}