Use PassphraseFields in ExportE2eKeysDialog to enforce minimum passphrase complexity (#11222)

* Use PassphraseFields in ExportE2eKeysDialog to enforce minimum passphrase complexity

* Tweak copy

* Iterate

* Add tests

* Improve variable naming

* Improve coverage

test/components/views/dialogs/security/ExportE2eKeysDialog-test.tsx

@@ -0,0 +1,72 @@
+/*
+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 { screen, fireEvent, render, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+
+import ExportE2eKeysDialog from "../../../../../src/async-components/views/dialogs/security/ExportE2eKeysDialog";
+import { createTestClient } from "../../../../test-utils";
+
+describe("ExportE2eKeysDialog", () => {
+    it("renders", () => {
+        const cli = createTestClient();
+        const onFinished = jest.fn();
+        const { asFragment } = render(<ExportE2eKeysDialog matrixClient={cli} onFinished={onFinished} />);
+        expect(asFragment()).toMatchSnapshot();
+    });
+
+    it("should have disabled submit button initially", () => {
+        const cli = createTestClient();
+        const onFinished = jest.fn();
+        const { container } = render(<ExportE2eKeysDialog matrixClient={cli} onFinished={onFinished} />);
+        fireEvent.click(container.querySelector("[type=submit]")!);
+        expect(screen.getByText("Enter passphrase")).toBeInTheDocument();
+    });
+
+    it("should complain about weak passphrases", async () => {
+        const cli = createTestClient();
+        const onFinished = jest.fn();
+
+        const { container } = render(<ExportE2eKeysDialog matrixClient={cli} onFinished={onFinished} />);
+        const input = screen.getByLabelText("Enter passphrase");
+        await userEvent.type(input, "password");
+        fireEvent.click(container.querySelector("[type=submit]")!);
+        await expect(screen.findByText("This is a top-10 common password")).resolves.toBeInTheDocument();
+    });
+
+    it("should complain if passphrases don't match", async () => {
+        const cli = createTestClient();
+        const onFinished = jest.fn();
+
+        const { container } = render(<ExportE2eKeysDialog matrixClient={cli} onFinished={onFinished} />);
+        await userEvent.type(screen.getByLabelText("Enter passphrase"), "ThisIsAMoreSecurePW123$$");
+        await userEvent.type(screen.getByLabelText("Confirm passphrase"), "ThisIsAMoreSecurePW124$$");
+        fireEvent.click(container.querySelector("[type=submit]")!);
+        await expect(screen.findByText("Passphrases must match")).resolves.toBeInTheDocument();
+    });
+
+    it("should export if everything is fine", async () => {
+        const cli = createTestClient();
+        const onFinished = jest.fn();
+
+        const { container } = render(<ExportE2eKeysDialog matrixClient={cli} onFinished={onFinished} />);
+        await userEvent.type(screen.getByLabelText("Enter passphrase"), "ThisIsAMoreSecurePW123$$");
+        await userEvent.type(screen.getByLabelText("Confirm passphrase"), "ThisIsAMoreSecurePW123$$");
+        fireEvent.click(container.querySelector("[type=submit]")!);
+        await waitFor(() => expect(cli.exportRoomKeys).toHaveBeenCalled());
+    });
+});