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Sync upstream Gemini-CLI v0.8.2 (#838)
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tanzhenxin
GitHub
345
packages/cli/src/utils/relaunch.test.ts
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345
packages/cli/src/utils/relaunch.test.ts
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/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import {
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vi,
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describe,
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it,
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expect,
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beforeEach,
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afterEach,
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type MockInstance,
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} from 'vitest';
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import { EventEmitter } from 'node:events';
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import { RELAUNCH_EXIT_CODE } from './processUtils.js';
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import type { ChildProcess } from 'node:child_process';
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import { spawn } from 'node:child_process';
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vi.mock('node:child_process', async (importOriginal) => {
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const actual = await importOriginal<typeof import('node:child_process')>();
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return {
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...actual,
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spawn: vi.fn(),
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};
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});
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const mockedSpawn = vi.mocked(spawn);
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// Import the functions initially
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import { relaunchAppInChildProcess, relaunchOnExitCode } from './relaunch.js';
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describe('relaunchOnExitCode', () => {
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let processExitSpy: MockInstance;
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let consoleErrorSpy: MockInstance;
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let stdinResumeSpy: MockInstance;
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beforeEach(() => {
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processExitSpy = vi.spyOn(process, 'exit').mockImplementation(() => {
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throw new Error('PROCESS_EXIT_CALLED');
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});
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consoleErrorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
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stdinResumeSpy = vi
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.spyOn(process.stdin, 'resume')
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.mockImplementation(() => process.stdin);
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vi.clearAllMocks();
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});
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afterEach(() => {
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processExitSpy.mockRestore();
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consoleErrorSpy.mockRestore();
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stdinResumeSpy.mockRestore();
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});
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it('should exit with non-RELAUNCH_EXIT_CODE', async () => {
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const runner = vi.fn().mockResolvedValue(0);
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await expect(relaunchOnExitCode(runner)).rejects.toThrow(
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'PROCESS_EXIT_CALLED',
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);
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expect(runner).toHaveBeenCalledTimes(1);
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expect(processExitSpy).toHaveBeenCalledWith(0);
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});
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it('should continue running when RELAUNCH_EXIT_CODE is returned', async () => {
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let callCount = 0;
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const runner = vi.fn().mockImplementation(async () => {
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callCount++;
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if (callCount === 1) return RELAUNCH_EXIT_CODE;
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if (callCount === 2) return RELAUNCH_EXIT_CODE;
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return 0; // Exit on third call
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});
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await expect(relaunchOnExitCode(runner)).rejects.toThrow(
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'PROCESS_EXIT_CALLED',
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);
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expect(runner).toHaveBeenCalledTimes(3);
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expect(processExitSpy).toHaveBeenCalledWith(0);
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});
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it('should handle runner errors', async () => {
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const error = new Error('Runner failed');
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const runner = vi.fn().mockRejectedValue(error);
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await expect(relaunchOnExitCode(runner)).rejects.toThrow(
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'PROCESS_EXIT_CALLED',
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);
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expect(runner).toHaveBeenCalledTimes(1);
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expect(consoleErrorSpy).toHaveBeenCalledWith(
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'Fatal error: Failed to relaunch the CLI process.',
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error,
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);
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expect(stdinResumeSpy).toHaveBeenCalled();
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expect(processExitSpy).toHaveBeenCalledWith(1);
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});
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});
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describe('relaunchAppInChildProcess', () => {
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let processExitSpy: MockInstance;
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let consoleErrorSpy: MockInstance;
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let stdinPauseSpy: MockInstance;
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let stdinResumeSpy: MockInstance;
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// Store original values to restore later
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const originalEnv = { ...process.env };
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const originalExecArgv = [...process.execArgv];
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const originalArgv = [...process.argv];
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const originalExecPath = process.execPath;
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beforeEach(() => {
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vi.clearAllMocks();
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process.env = { ...originalEnv };
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delete process.env['GEMINI_CLI_NO_RELAUNCH'];
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process.execArgv = [...originalExecArgv];
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process.argv = [...originalArgv];
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process.execPath = '/usr/bin/node';
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processExitSpy = vi.spyOn(process, 'exit').mockImplementation(() => {
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throw new Error('PROCESS_EXIT_CALLED');
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});
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consoleErrorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
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stdinPauseSpy = vi
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.spyOn(process.stdin, 'pause')
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.mockImplementation(() => process.stdin);
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stdinResumeSpy = vi
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.spyOn(process.stdin, 'resume')
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.mockImplementation(() => process.stdin);
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});
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afterEach(() => {
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process.env = { ...originalEnv };
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process.execArgv = [...originalExecArgv];
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process.argv = [...originalArgv];
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process.execPath = originalExecPath;
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processExitSpy.mockRestore();
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consoleErrorSpy.mockRestore();
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stdinPauseSpy.mockRestore();
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stdinResumeSpy.mockRestore();
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});
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describe('when GEMINI_CLI_NO_RELAUNCH is set', () => {
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it('should return early without spawning a child process', async () => {
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process.env['GEMINI_CLI_NO_RELAUNCH'] = 'true';
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await relaunchAppInChildProcess(['--test'], ['--verbose']);
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expect(mockedSpawn).not.toHaveBeenCalled();
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expect(processExitSpy).not.toHaveBeenCalled();
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});
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});
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describe('when GEMINI_CLI_NO_RELAUNCH is not set', () => {
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beforeEach(() => {
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delete process.env['GEMINI_CLI_NO_RELAUNCH'];
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});
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it('should construct correct node arguments from execArgv, additionalNodeArgs, script, additionalScriptArgs, and argv', () => {
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// Test the argument construction logic directly by extracting it into a testable function
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// This tests the same logic that's used in relaunchAppInChildProcess
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// Setup test data to verify argument ordering
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const mockExecArgv = ['--inspect=9229', '--trace-warnings'];
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const mockArgv = [
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'/usr/bin/node',
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'/path/to/cli.js',
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'command',
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'--flag=value',
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'--verbose',
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];
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const additionalNodeArgs = [
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'--max-old-space-size=4096',
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'--experimental-modules',
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];
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const additionalScriptArgs = ['--model', 'gemini-1.5-pro', '--debug'];
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// Extract the argument construction logic from relaunchAppInChildProcess
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const script = mockArgv[1];
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const scriptArgs = mockArgv.slice(2);
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const nodeArgs = [
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...mockExecArgv,
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...additionalNodeArgs,
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script,
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...additionalScriptArgs,
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...scriptArgs,
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];
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// Verify the argument construction follows the expected pattern:
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// [...process.execArgv, ...additionalNodeArgs, script, ...additionalScriptArgs, ...scriptArgs]
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const expectedArgs = [
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// Original node execution arguments
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'--inspect=9229',
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'--trace-warnings',
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// Additional node arguments passed to function
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'--max-old-space-size=4096',
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'--experimental-modules',
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// The script path
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'/path/to/cli.js',
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// Additional script arguments passed to function
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'--model',
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'gemini-1.5-pro',
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'--debug',
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// Original script arguments (everything after the script in process.argv)
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'command',
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'--flag=value',
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'--verbose',
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];
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expect(nodeArgs).toEqual(expectedArgs);
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});
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it('should handle empty additional arguments correctly', () => {
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// Test edge cases with empty arrays
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const mockExecArgv = ['--trace-warnings'];
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const mockArgv = ['/usr/bin/node', '/app/cli.js', 'start'];
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const additionalNodeArgs: string[] = [];
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const additionalScriptArgs: string[] = [];
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// Extract the argument construction logic
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const script = mockArgv[1];
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const scriptArgs = mockArgv.slice(2);
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const nodeArgs = [
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...mockExecArgv,
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...additionalNodeArgs,
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script,
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...additionalScriptArgs,
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...scriptArgs,
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];
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const expectedArgs = ['--trace-warnings', '/app/cli.js', 'start'];
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expect(nodeArgs).toEqual(expectedArgs);
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});
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it('should handle complex argument patterns', () => {
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// Test with various argument types including flags with values, boolean flags, etc.
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const mockExecArgv = ['--max-old-space-size=8192'];
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const mockArgv = [
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'/usr/bin/node',
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'/cli.js',
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'--config=/path/to/config.json',
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'--verbose',
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'subcommand',
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'--output',
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'file.txt',
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];
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const additionalNodeArgs = ['--inspect-brk=9230'];
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const additionalScriptArgs = ['--model=gpt-4', '--temperature=0.7'];
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const script = mockArgv[1];
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const scriptArgs = mockArgv.slice(2);
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const nodeArgs = [
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...mockExecArgv,
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...additionalNodeArgs,
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script,
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...additionalScriptArgs,
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...scriptArgs,
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];
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const expectedArgs = [
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'--max-old-space-size=8192',
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'--inspect-brk=9230',
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'/cli.js',
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'--model=gpt-4',
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'--temperature=0.7',
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'--config=/path/to/config.json',
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'--verbose',
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'subcommand',
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'--output',
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'file.txt',
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];
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expect(nodeArgs).toEqual(expectedArgs);
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});
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// Note: Additional integration tests for spawn behavior are complex due to module mocking
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// limitations with ES modules. The core logic is tested in relaunchOnExitCode tests.
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it('should handle null exit code from child process', async () => {
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process.argv = ['/usr/bin/node', '/app/cli.js'];
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const mockChild = createMockChildProcess(0, false); // Don't auto-close
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mockedSpawn.mockImplementation(() => {
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// Emit close with null code immediately
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setImmediate(() => {
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mockChild.emit('close', null);
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});
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return mockChild;
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});
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// Start the relaunch process
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const promise = relaunchAppInChildProcess([], []);
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await expect(promise).rejects.toThrow('PROCESS_EXIT_CALLED');
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// Should default to exit code 1
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expect(processExitSpy).toHaveBeenCalledWith(1);
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});
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});
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});
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/**
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* Creates a mock child process that emits events asynchronously
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*/
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function createMockChildProcess(
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exitCode: number = 0,
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autoClose: boolean = false,
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): ChildProcess {
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const mockChild = new EventEmitter() as ChildProcess;
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Object.assign(mockChild, {
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stdin: null,
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stdout: null,
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stderr: null,
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stdio: [null, null, null],
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pid: 12345,
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killed: false,
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exitCode: null,
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signalCode: null,
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spawnargs: [],
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spawnfile: '',
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kill: vi.fn(),
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send: vi.fn(),
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disconnect: vi.fn(),
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unref: vi.fn(),
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ref: vi.fn(),
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});
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if (autoClose) {
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setImmediate(() => {
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mockChild.emit('close', exitCode);
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});
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}
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return mockChild;
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}
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