Use CopyableText in devtools (#9993)

Co-authored-by: Alun Turner <alunt@element.io>

test/components/views/dialogs/DevtoolsDialog-test.tsx

@@ -0,0 +1,71 @@
+/*
+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 React from "react";
+import { getByLabelText, render } from "@testing-library/react";
+import { Room } from "matrix-js-sdk/src/models/room";
+import { MatrixClient } from "matrix-js-sdk/src/client";
+import userEvent from "@testing-library/user-event";
+
+import { stubClient } from "../../../test-utils";
+import { MatrixClientPeg } from "../../../../src/MatrixClientPeg";
+import MatrixClientContext from "../../../../src/contexts/MatrixClientContext";
+import DevtoolsDialog from "../../../../src/components/views/dialogs/DevtoolsDialog";
+
+describe("DevtoolsDialog", () => {
+    let cli: MatrixClient;
+    let room: Room;
+
+    function getComponent(roomId: string, onFinished = () => true) {
+        return render(
+            <MatrixClientContext.Provider value={cli}>
+                <DevtoolsDialog roomId={roomId} onFinished={onFinished} />
+            </MatrixClientContext.Provider>,
+        );
+    }
+
+    beforeEach(() => {
+        stubClient();
+        cli = MatrixClientPeg.get();
+        room = new Room("!id", cli, "@alice:matrix.org");
+
+        jest.spyOn(cli, "getRoom").mockReturnValue(room);
+    });
+
+    afterAll(() => {
+        jest.restoreAllMocks();
+    });
+
+    it("renders the devtools dialog", () => {
+        const { asFragment } = getComponent(room.roomId);
+        expect(asFragment()).toMatchSnapshot();
+    });
+
+    it("copies the roomid", async () => {
+        const user = userEvent.setup();
+        jest.spyOn(navigator.clipboard, "writeText");
+
+        const { container } = getComponent(room.roomId);
+
+        const copyBtn = getByLabelText(container, "Copy");
+        await user.click(copyBtn);
+        const copiedBtn = getByLabelText(container, "Copied!");
+
+        expect(copiedBtn).toBeInTheDocument();
+        expect(navigator.clipboard.writeText).toHaveBeenCalled();
+        expect(navigator.clipboard.readText()).resolves.toBe(room.roomId);
+    });
+});