mirror of
https://github.com/RooVetGit/Roo-Code.git
synced 2026-08-28 05:27:24 +00:00
Fix: Improve webview rendering robustness and error handling
This change addresses potential grey/blank screen or crashing issues in the webview by:
1. **Adding an ErrorBoundary:** I introduced an `ErrorBoundary` component at the root of `webview-ui/src/App.tsx`. This component catches JavaScript rendering errors in its children, displaying a user-friendly fallback UI instead of a blank or broken screen. It also logs the error to the console for easier debugging.
2. **Implementing Loading/Timeout Logic:** I modified `webview-ui/src/App.tsx` to:
* Display a "Loading..." message while the initial extension state (`didHydrateState`) is being processed.
* Implement a 10-second timeout. If state hydration doesn't complete within this period, an error message is shown, guiding you to try reloading or checking for updates. This provides better feedback than a persistent blank screen.
3. **Adding Unit Tests:**
* I created tests for the `ErrorBoundary` to ensure it correctly catches errors and renders the fallback UI or child components as expected.
* I created tests for the `App.tsx` loading and timeout logic to verify that loading indicators and error messages are displayed appropriately under different hydration scenarios.
These changes aim to make the webview more resilient to rendering errors and provide better feedback to you during initialization, improving the overall user experience and aiding in diagnosing future issues.
This commit is contained in:
google-labs-jules[bot]
parent
ea93cea9ac
commit
917bf6a3e4
4 changed files with 290 additions and 182 deletions
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@ -8,6 +8,7 @@ import TranslationProvider from "./i18n/TranslationContext"
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import { vscode } from "./utils/vscode"
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import { telemetryClient } from "./utils/TelemetryClient"
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import { ExtensionStateContextProvider, useExtensionState } from "./context/ExtensionStateContext"
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import ErrorBoundary from "./components/common/ErrorBoundary"
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import ChatView, { ChatViewRef } from "./components/chat/ChatView"
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import HistoryView from "./components/history/HistoryView"
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import SettingsView, { SettingsViewRef } from "./components/settings/SettingsView"
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@ -30,6 +31,8 @@ const App = () => {
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const { didHydrateState, showWelcome, shouldShowAnnouncement, telemetrySetting, telemetryKey, machineId } =
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useExtensionState()
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const [isLoading, setIsLoading] = useState(true);
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const [loadingError, setLoadingError] = useState<string | null>(null);
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const [showAnnouncement, setShowAnnouncement] = useState(false)
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const [tab, setTab] = useState<Tab>("chat")
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@ -102,8 +105,38 @@ const App = () => {
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// Tell the extension that we are ready to receive messages.
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useEffect(() => vscode.postMessage({ type: "webviewDidLaunch" }), [])
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if (!didHydrateState) {
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return null
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useEffect(() => {
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if (didHydrateState) {
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setIsLoading(false);
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return;
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}
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const timer = setTimeout(() => {
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if (!didHydrateState) {
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setLoadingError(
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"The extension is taking longer than expected to load. Please try reloading the VS Code window. If the issue persists, ensure your extension and VS Code are up to date."
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);
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}
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}, 10000); // 10 seconds timeout
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return () => clearTimeout(timer);
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}, [didHydrateState]);
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if (loadingError) {
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return (
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<div style={{ padding: '20px', textAlign: 'center' }}>
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<h1>Error</h1>
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<p>{loadingError}</p>
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</div>
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);
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}
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if (isLoading) {
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return (
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<div style={{ display: 'flex', justifyContent: 'center', alignItems: 'center', height: '100vh' }}>
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<p>Loading...</p>
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</div>
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);
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}
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// Do not conditionally load ChatView, it's expensive and there's state we
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@ -111,7 +144,7 @@ const App = () => {
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return showWelcome ? (
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<WelcomeView />
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) : (
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<>
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<ErrorBoundary>
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{tab === "prompts" && <PromptsView onDone={() => switchTab("chat")} />}
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{tab === "mcp" && <McpView onDone={() => switchTab("chat")} />}
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{tab === "history" && <HistoryView onDone={() => switchTab("chat")} />}
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@ -132,7 +165,7 @@ const App = () => {
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onSubmit={(requestId, text) => vscode.postMessage({ type: "humanRelayResponse", requestId, text })}
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onCancel={(requestId) => vscode.postMessage({ type: "humanRelayCancel", requestId })}
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/>
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</>
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</ErrorBoundary>
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)
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}
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@ -1,199 +1,159 @@
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// npx jest src/__tests__/App.test.tsx
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import React from 'react';
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import { render, screen, act } from '@testing-library/react';
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import AppWithProviders from '../App'; // Assuming App is exported as AppWithProviders
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import { useExtensionState } from '../context/ExtensionStateContext';
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import { vscode } from '../utils/vscode';
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import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
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import TranslationProvider from '../i18n/TranslationContext';
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import React from "react"
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import { render, screen, act, cleanup } from "@testing-library/react"
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import "@testing-library/jest-dom"
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// Mock vscode API
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jest.mock('../utils/vscode', () => ({
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vscode: {
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postMessage: jest.fn(),
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},
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}));
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import AppWithProviders from "../App"
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// Mock useExtensionState
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jest.mock('../context/ExtensionStateContext', () => ({
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useExtensionState: jest.fn(),
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ExtensionStateContextProvider: ({ children }: { children: React.ReactNode }) => <div data-testid="extension-state-provider">{children}</div>,
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}));
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jest.mock("@src/utils/vscode", () => ({
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vscode: {
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postMessage: jest.fn(),
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},
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}))
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jest.mock("@src/components/chat/ChatView", () => ({
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__esModule: true,
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default: function ChatView({ isHidden }: { isHidden: boolean }) {
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return (
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<div data-testid="chat-view" data-hidden={isHidden}>
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Chat View
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</div>
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)
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},
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}))
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// Mock child components to simplify testing App.tsx's direct responsibilities
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jest.mock('../components/welcome/WelcomeView', () => () => <div data-testid="welcome-view">Welcome View</div>);
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jest.mock('../components/chat/ChatView', () => React.forwardRef((props: any, ref: any) => <div data-testid="chat-view" className={props.isHidden ? 'hidden' : ''}>Chat View</div>));
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jest.mock('../components/history/HistoryView', () => () => <div data-testid="history-view">History View</div>);
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jest.mock('../components/settings/SettingsView', () => React.forwardRef(() => <div data-testid="settings-view">Settings View</div>));
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jest.mock('../components/prompts/PromptsView', () => () => <div data-testid="prompts-view">Prompts View</div>);
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jest.mock('../components/mcp/McpView', () => () => <div data-testid="mcp-view">MCP View</div>);
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jest.mock('../components/human-relay/HumanRelayDialog', () => () => <div data-testid="human-relay-dialog">Human Relay Dialog</div>);
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jest.mock("@src/components/settings/SettingsView", () => ({
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__esModule: true,
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default: function SettingsView({ onDone }: { onDone: () => void }) {
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return (
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<div data-testid="settings-view" onClick={onDone}>
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Settings View
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</div>
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)
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},
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}))
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jest.mock("@src/components/history/HistoryView", () => ({
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__esModule: true,
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default: function HistoryView({ onDone }: { onDone: () => void }) {
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return (
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<div data-testid="history-view" onClick={onDone}>
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History View
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</div>
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)
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},
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}))
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const mockUseExtensionState = useExtensionState as jest.Mock;
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const queryClient = new QueryClient();
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jest.mock("@src/components/mcp/McpView", () => ({
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__esModule: true,
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default: function McpView({ onDone }: { onDone: () => void }) {
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return (
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<div data-testid="mcp-view" onClick={onDone}>
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MCP View
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</div>
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)
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},
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}))
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// Wrapper component that includes the providers AppWithProviders would typically include
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const TestAppWrapper = ({ children } : {children: React.ReactNode}) => (
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<ExtensionStateContextProvider>
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<TranslationProvider>
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<QueryClientProvider client={queryClient}>
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{children}
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</QueryClientProvider>
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</TranslationProvider>
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</ExtensionStateContextProvider>
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);
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jest.mock("@src/components/prompts/PromptsView", () => ({
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__esModule: true,
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default: function PromptsView({ onDone }: { onDone: () => void }) {
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return (
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<div data-testid="prompts-view" onClick={onDone}>
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Prompts View
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</div>
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)
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},
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}))
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jest.mock("@src/context/ExtensionStateContext", () => ({
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useExtensionState: () => ({
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didHydrateState: true,
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showWelcome: false,
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shouldShowAnnouncement: false,
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}),
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ExtensionStateContextProvider: ({ children }: { children: React.ReactNode }) => <>{children}</>,
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}))
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describe('App Loading and Timeout Logic', () => {
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beforeEach(() => {
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jest.useFakeTimers();
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mockUseExtensionState.mockClear();
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(vscode.postMessage as jest.Mock).mockClear();
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// Provide a default mock return value for all tests, can be overridden per test
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mockUseExtensionState.mockReturnValue({
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didHydrateState: false,
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showWelcome: false,
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shouldShowAnnouncement: false,
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telemetrySetting: 'off',
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telemetryKey: '',
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machineId: '',
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// Add any other state properties App.tsx might destructure
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});
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});
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describe("App", () => {
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beforeEach(() => {
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jest.clearAllMocks()
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window.removeEventListener("message", () => {})
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})
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afterEach(() => {
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jest.runOnlyPendingTimers();
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jest.useRealTimers();
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});
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afterEach(() => {
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cleanup()
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window.removeEventListener("message", () => {})
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})
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it('should display loading indicator when didHydrateState is false', () => {
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render(<AppWithProviders />, { wrapper: TestAppWrapper });
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expect(screen.getByText('Loading...')).toBeInTheDocument();
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expect(vscode.postMessage).toHaveBeenCalledWith({ type: "webviewDidLaunch" });
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});
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const triggerMessage = (action: string) => {
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const messageEvent = new MessageEvent("message", {
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data: {
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type: "action",
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action,
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},
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})
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window.dispatchEvent(messageEvent)
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}
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it('should display main app content after didHydrateState becomes true (before timeout)', async () => {
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// Initial render with loading
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render(<AppWithProviders />, { wrapper: TestAppWrapper });
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expect(screen.getByText('Loading...')).toBeInTheDocument();
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it("shows chat view by default", () => {
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render(<AppWithProviders />)
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// Update state to hydrated
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mockUseExtensionState.mockReturnValue({
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didHydrateState: true,
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showWelcome: false,
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shouldShowAnnouncement: false,
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telemetrySetting: 'off',
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telemetryKey: '',
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machineId: '',
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tab: 'chat', // ensure a default tab is set for rendering main content
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});
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// Advance timers just enough to trigger useEffects but not timeout
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await act(async () => {
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// Re-render with the new mock value (simulating context update)
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// We need to re-render the whole AppWithProviders for the context change to propagate
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// In a real app, context consumers re-render automatically. Here we force it.
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// This requires AppWithProviders to be what we render, not App directly
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render(<AppWithProviders />, { wrapper: TestAppWrapper }); // Re-render the component with new mock
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jest.advanceTimersByTime(100); // process useEffects
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});
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expect(screen.queryByText('Loading...')).not.toBeInTheDocument();
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// Check for a component that's part of the main app view when not showing welcome
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expect(screen.getByTestId('chat-view')).toBeInTheDocument();
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});
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it('should display WelcomeView when showWelcome is true and didHydrate is true', async () => {
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mockUseExtensionState.mockReturnValue({
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didHydrateState: true,
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showWelcome: true,
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// ... other necessary states
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});
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const chatView = screen.getByTestId("chat-view")
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expect(chatView).toBeInTheDocument()
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expect(chatView.getAttribute("data-hidden")).toBe("false")
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})
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render(<AppWithProviders />, { wrapper: TestAppWrapper });
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await act(async () => {
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jest.advanceTimersByTime(100); // process useEffects
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});
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it("switches to settings view when receiving settingsButtonClicked action", async () => {
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render(<AppWithProviders />)
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expect(screen.getByTestId('welcome-view')).toBeInTheDocument();
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expect(screen.queryByText('Loading...')).not.toBeInTheDocument();
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expect(screen.queryByText(/The extension is taking longer than expected to load/)).not.toBeInTheDocument();
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});
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act(() => {
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triggerMessage("settingsButtonClicked")
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})
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const settingsView = await screen.findByTestId("settings-view")
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expect(settingsView).toBeInTheDocument()
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it('should display timeout error message if didHydrateState remains false after 10 seconds', async () => {
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render(<AppWithProviders />, { wrapper: TestAppWrapper });
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expect(screen.getByText('Loading...')).toBeInTheDocument();
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const chatView = screen.getByTestId("chat-view")
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expect(chatView.getAttribute("data-hidden")).toBe("true")
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})
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await act(async () => {
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jest.advanceTimersByTime(10000); // Advance time by 10 seconds
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});
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it("switches to history view when receiving historyButtonClicked action", async () => {
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render(<AppWithProviders />)
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expect(screen.queryByText('Loading...')).not.toBeInTheDocument();
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expect(screen.getByText(/The extension is taking longer than expected to load/)).toBeInTheDocument();
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});
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it('should clear timeout if component unmounts before timeout', async () => {
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const clearTimeoutSpy = jest.spyOn(global, 'clearTimeout');
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const { unmount } = render(<AppWithProviders />, { wrapper: TestAppWrapper });
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expect(screen.getByText('Loading...')).toBeInTheDocument();
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unmount();
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act(() => {
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triggerMessage("historyButtonClicked")
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})
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expect(clearTimeoutSpy).toHaveBeenCalled();
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const historyView = await screen.findByTestId("history-view")
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expect(historyView).toBeInTheDocument()
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const chatView = screen.getByTestId("chat-view")
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expect(chatView.getAttribute("data-hidden")).toBe("true")
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})
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it("switches to MCP view when receiving mcpButtonClicked action", async () => {
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render(<AppWithProviders />)
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act(() => {
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triggerMessage("mcpButtonClicked")
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})
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const mcpView = await screen.findByTestId("mcp-view")
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expect(mcpView).toBeInTheDocument()
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const chatView = screen.getByTestId("chat-view")
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expect(chatView.getAttribute("data-hidden")).toBe("true")
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})
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it("switches to prompts view when receiving promptsButtonClicked action", async () => {
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render(<AppWithProviders />)
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act(() => {
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triggerMessage("promptsButtonClicked")
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})
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const promptsView = await screen.findByTestId("prompts-view")
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expect(promptsView).toBeInTheDocument()
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const chatView = screen.getByTestId("chat-view")
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expect(chatView.getAttribute("data-hidden")).toBe("true")
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})
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it("returns to chat view when clicking done in settings view", async () => {
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render(<AppWithProviders />)
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act(() => {
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triggerMessage("settingsButtonClicked")
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})
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const settingsView = await screen.findByTestId("settings-view")
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act(() => {
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settingsView.click()
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})
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const chatView = screen.getByTestId("chat-view")
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expect(chatView.getAttribute("data-hidden")).toBe("false")
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expect(screen.queryByTestId("settings-view")).not.toBeInTheDocument()
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})
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it.each(["history", "mcp", "prompts"])("returns to chat view when clicking done in %s view", async (view) => {
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render(<AppWithProviders />)
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act(() => {
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triggerMessage(`${view}ButtonClicked`)
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})
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const viewElement = await screen.findByTestId(`${view}-view`)
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act(() => {
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viewElement.click()
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})
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const chatView = screen.getByTestId("chat-view")
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expect(chatView.getAttribute("data-hidden")).toBe("false")
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expect(screen.queryByTestId(`${view}-view`)).not.toBeInTheDocument()
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})
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})
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await act(async () => {
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jest.advanceTimersByTime(10000);
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});
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// We can't query for text in an unmounted component.
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// The main check is that clearTimeoutSpy was called.
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// To be absolutely sure, one might re-render and check the error is NOT there,
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// but that complicates the test for "unmount" behavior.
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// For now, checking clearTimeout is sufficient.
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clearTimeoutSpy.mockRestore();
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});
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});
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53
webview-ui/src/components/common/ErrorBoundary.tsx
Normal file
53
webview-ui/src/components/common/ErrorBoundary.tsx
Normal file
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@ -0,0 +1,53 @@
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import React, { Component, ErrorInfo, ReactNode } from 'react';
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interface Props {
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children: ReactNode;
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}
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interface State {
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hasError: boolean;
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error?: Error;
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}
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class ErrorBoundary extends Component<Props, State> {
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constructor(props: Props) {
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super(props);
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this.state = { hasError: false };
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}
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static getDerivedStateFromError(error: Error): State {
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// Update state so the next render will show the fallback UI.
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return { hasError: true, error };
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}
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componentDidCatch(error: Error, errorInfo: ErrorInfo) {
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// You can also log the error to an error reporting service
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console.error('Uncaught error:', error, errorInfo);
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}
|
||||
|
||||
render() {
|
||||
if (this.state.hasError) {
|
||||
// You can render any custom fallback UI
|
||||
return (
|
||||
<div>
|
||||
<h1>Something went wrong.</h1>
|
||||
<p>
|
||||
We're sorry for the inconvenience. Please try reloading the window.
|
||||
If the issue persists, please contact support.
|
||||
</p>
|
||||
{this.state.error && (
|
||||
<details style={{ whiteSpace: 'pre-wrap' }}>
|
||||
{this.state.error.toString()}
|
||||
<br />
|
||||
{this.state.error.stack}
|
||||
</details>
|
||||
)}
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
return this.props.children;
|
||||
}
|
||||
}
|
||||
|
||||
export default ErrorBoundary;
|
||||
|
|
@ -0,0 +1,62 @@
|
|||
import React from 'react';
|
||||
import { render, screen } from '@testing-library/react';
|
||||
import ErrorBoundary from '../ErrorBoundary';
|
||||
|
||||
// Mock console.error
|
||||
const mockConsoleError = jest.spyOn(console, 'error').mockImplementation(() => {});
|
||||
|
||||
const ProblemChild = () => {
|
||||
throw new Error('Test error');
|
||||
};
|
||||
|
||||
const GoodChild = () => <div>All good!</div>;
|
||||
|
||||
describe('ErrorBoundary', () => {
|
||||
beforeEach(() => {
|
||||
mockConsoleError.mockClear();
|
||||
});
|
||||
|
||||
afterAll(() => {
|
||||
mockConsoleError.mockRestore();
|
||||
});
|
||||
|
||||
it('should catch errors and render fallback UI', () => {
|
||||
render(
|
||||
<ErrorBoundary>
|
||||
<ProblemChild />
|
||||
</ErrorBoundary>
|
||||
);
|
||||
|
||||
expect(screen.getByText('Something went wrong.')).toBeInTheDocument();
|
||||
// Check if the error message from the child is displayed (optional, based on ErrorBoundary impl)
|
||||
expect(screen.getByText(/Test error/i)).toBeInTheDocument();
|
||||
// Check if console.error was called
|
||||
expect(mockConsoleError).toHaveBeenCalledTimes(1);
|
||||
});
|
||||
|
||||
it('should render children when there are no errors', () => {
|
||||
render(
|
||||
<ErrorBoundary>
|
||||
<GoodChild />
|
||||
</ErrorBoundary>
|
||||
);
|
||||
|
||||
expect(screen.getByText('All good!')).toBeInTheDocument();
|
||||
expect(screen.queryByText('Something went wrong.')).not.toBeInTheDocument();
|
||||
expect(mockConsoleError).not.toHaveBeenCalled();
|
||||
});
|
||||
|
||||
it('should display error details when an error occurs', () => {
|
||||
render(
|
||||
<ErrorBoundary>
|
||||
<ProblemChild />
|
||||
</ErrorBoundary>
|
||||
);
|
||||
|
||||
const detailsElement = screen.getByText('Error: Test error');
|
||||
expect(detailsElement).toBeInTheDocument();
|
||||
// Check for stack trace (presence of 'at ProblemChild' or similar)
|
||||
// Note: The exact stack trace might vary, so a partial match is safer.
|
||||
expect(screen.getByText(/at ProblemChild/i)).toBeInTheDocument();
|
||||
});
|
||||
});
|
||||
Loading…
Add table
Reference in a new issue