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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { act, renderHook } from '@testing-library/react';
import { vi } from 'vitest';
import { useShellCommandProcessor } from './shellCommandProcessor';
import { Config, GeminiClient } from '@gemini-cli/core';
import * as fs from 'fs';
import EventEmitter from 'events';
// Mock dependencies
vi.mock('child_process');
vi.mock('fs');
vi.mock('os', () => ({
default: {
platform: () => 'linux',
tmpdir: () => '/tmp',
},
platform: () => 'linux',
tmpdir: () => '/tmp',
}));
vi.mock('@gemini-cli/core');
vi.mock('../utils/textUtils.js', () => ({
isBinary: vi.fn(),
}));
describe('useShellCommandProcessor', () => {
let spawnEmitter: EventEmitter;
let addItemToHistoryMock: vi.Mock;
let setPendingHistoryItemMock: vi.Mock;
let onExecMock: vi.Mock;
let onDebugMessageMock: vi.Mock;
let configMock: Config;
let geminiClientMock: GeminiClient;
beforeEach(async () => {
const { spawn } = await import('child_process');
spawnEmitter = new EventEmitter();
spawnEmitter.stdout = new EventEmitter();
spawnEmitter.stderr = new EventEmitter();
(spawn as vi.Mock).mockReturnValue(spawnEmitter);
vi.spyOn(fs, 'existsSync').mockReturnValue(false);
vi.spyOn(fs, 'readFileSync').mockReturnValue('');
vi.spyOn(fs, 'unlinkSync').mockReturnValue(undefined);
addItemToHistoryMock = vi.fn();
setPendingHistoryItemMock = vi.fn();
onExecMock = vi.fn();
onDebugMessageMock = vi.fn();
configMock = {
getTargetDir: () => '/test/dir',
} as unknown as Config;
geminiClientMock = {
addHistory: vi.fn(),
} as unknown as GeminiClient;
});
afterEach(() => {
vi.restoreAllMocks();
});
const renderProcessorHook = () =>
renderHook(() =>
useShellCommandProcessor(
addItemToHistoryMock,
setPendingHistoryItemMock,
onExecMock,
onDebugMessageMock,
configMock,
geminiClientMock,
),
);
it('should execute a command and update history on success', async () => {
const { result } = renderProcessorHook();
const abortController = new AbortController();
act(() => {
result.current.handleShellCommand('ls -l', abortController.signal);
});
expect(onExecMock).toHaveBeenCalledTimes(1);
const execPromise = onExecMock.mock.calls[0][0];
// Simulate stdout
act(() => {
spawnEmitter.stdout.emit('data', Buffer.from('file1.txt\nfile2.txt'));
});
// Simulate process exit
act(() => {
spawnEmitter.emit('exit', 0, null);
});
await act(async () => {
await execPromise;
});
expect(addItemToHistoryMock).toHaveBeenCalledTimes(2);
expect(addItemToHistoryMock.mock.calls[1][0]).toEqual({
type: 'info',
text: 'file1.txt\nfile2.txt',
});
expect(geminiClientMock.addHistory).toHaveBeenCalledTimes(1);
});
it('should handle binary output', async () => {
const { result } = renderProcessorHook();
const abortController = new AbortController();
const { isBinary } = await import('../utils/textUtils.js');
(isBinary as vi.Mock).mockReturnValue(true);
act(() => {
result.current.handleShellCommand(
'cat myimage.png',
abortController.signal,
);
});
expect(onExecMock).toHaveBeenCalledTimes(1);
const execPromise = onExecMock.mock.calls[0][0];
act(() => {
spawnEmitter.stdout.emit('data', Buffer.from([0x89, 0x50, 0x4e, 0x47]));
});
act(() => {
spawnEmitter.emit('exit', 0, null);
});
await act(async () => {
await execPromise;
});
expect(addItemToHistoryMock).toHaveBeenCalledTimes(2);
expect(addItemToHistoryMock.mock.calls[1][0]).toEqual({
type: 'info',
text: '[Command produced binary output, which is not shown.]',
});
});
it('should handle command failure', async () => {
const { result } = renderProcessorHook();
const abortController = new AbortController();
act(() => {
result.current.handleShellCommand(
'a-bad-command',
abortController.signal,
);
});
const execPromise = onExecMock.mock.calls[0][0];
act(() => {
spawnEmitter.stderr.emit('data', Buffer.from('command not found'));
});
act(() => {
spawnEmitter.emit('exit', 127, null);
});
await act(async () => {
await execPromise;
});
expect(addItemToHistoryMock).toHaveBeenCalledTimes(2);
expect(addItemToHistoryMock.mock.calls[1][0]).toEqual({
type: 'error',
text: 'Command exited with code 127.\ncommand not found',
});
});
});
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