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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { vi, describe, it, expect, beforeEach, type Mock } from 'vitest';
import { checkHasEditor, getDiffCommand, openDiff } from './editor.js';
import { execSync, spawn } from 'child_process';
vi.mock('child_process', () => ({
execSync: vi.fn(),
spawn: vi.fn(),
}));
describe('checkHasEditor', () => {
beforeEach(() => {
vi.clearAllMocks();
});
it('should return true for vscode if "code" command exists', () => {
(execSync as Mock).mockReturnValue(Buffer.from('/usr/bin/code'));
expect(checkHasEditor('vscode')).toBe(true);
const expectedCommand =
process.platform === 'win32' ? 'where.exe code.cmd' : 'command -v code';
expect(execSync).toHaveBeenCalledWith(expectedCommand, {
stdio: 'ignore',
});
});
it('should return false for vscode if "code" command does not exist', () => {
(execSync as Mock).mockImplementation(() => {
throw new Error();
});
expect(checkHasEditor('vscode')).toBe(false);
});
it('should return true for windsurf if "windsurf" command exists', () => {
(execSync as Mock).mockReturnValue(Buffer.from('/usr/bin/windsurf'));
expect(checkHasEditor('windsurf')).toBe(true);
expect(execSync).toHaveBeenCalledWith('command -v windsurf', {
stdio: 'ignore',
});
});
it('should return false for windsurf if "windsurf" command does not exist', () => {
(execSync as Mock).mockImplementation(() => {
throw new Error();
});
expect(checkHasEditor('windsurf')).toBe(false);
});
it('should return true for cursor if "cursor" command exists', () => {
(execSync as Mock).mockReturnValue(Buffer.from('/usr/bin/cursor'));
expect(checkHasEditor('cursor')).toBe(true);
expect(execSync).toHaveBeenCalledWith('command -v cursor', {
stdio: 'ignore',
});
});
it('should return false for cursor if "cursor" command does not exist', () => {
(execSync as Mock).mockImplementation(() => {
throw new Error();
});
expect(checkHasEditor('cursor')).toBe(false);
});
it('should return true for vim if "vim" command exists', () => {
(execSync as Mock).mockReturnValue(Buffer.from('/usr/bin/vim'));
expect(checkHasEditor('vim')).toBe(true);
const expectedCommand =
process.platform === 'win32' ? 'where.exe vim' : 'command -v vim';
expect(execSync).toHaveBeenCalledWith(expectedCommand, {
stdio: 'ignore',
});
});
it('should return false for vim if "vim" command does not exist', () => {
(execSync as Mock).mockImplementation(() => {
throw new Error();
});
expect(checkHasEditor('vim')).toBe(false);
});
});
describe('getDiffCommand', () => {
it('should return the correct command for vscode', () => {
const command = getDiffCommand('old.txt', 'new.txt', 'vscode');
expect(command).toEqual({
command: 'code',
args: ['--wait', '--diff', 'old.txt', 'new.txt'],
});
});
it('should return the correct command for vim', () => {
const command = getDiffCommand('old.txt', 'new.txt', 'vim');
expect(command?.command).toBe('vim');
expect(command?.args).toContain('old.txt');
expect(command?.args).toContain('new.txt');
});
it('should return null for an unsupported editor', () => {
// @ts-expect-error Testing unsupported editor
const command = getDiffCommand('old.txt', 'new.txt', 'foobar');
expect(command).toBeNull();
});
});
describe('openDiff', () => {
beforeEach(() => {
vi.clearAllMocks();
});
it('should call spawn for vscode', async () => {
const mockSpawn = {
on: vi.fn((event, cb) => {
if (event === 'close') {
cb(0);
}
}),
};
(spawn as Mock).mockReturnValue(mockSpawn);
await openDiff('old.txt', 'new.txt', 'vscode');
expect(spawn).toHaveBeenCalledWith(
'code',
['--wait', '--diff', 'old.txt', 'new.txt'],
{ stdio: 'inherit' },
);
expect(mockSpawn.on).toHaveBeenCalledWith('close', expect.any(Function));
expect(mockSpawn.on).toHaveBeenCalledWith('error', expect.any(Function));
});
it('should call execSync for vim', async () => {
await openDiff('old.txt', 'new.txt', 'vim');
expect(execSync).toHaveBeenCalled();
const command = (execSync as Mock).mock.calls[0][0];
expect(command).toContain('vim');
expect(command).toContain('old.txt');
expect(command).toContain('new.txt');
});
it('should handle spawn error for vscode', async () => {
const mockSpawn = {
on: vi.fn((event, cb) => {
if (event === 'error') {
cb(new Error('spawn error'));
}
}),
};
(spawn as Mock).mockReturnValue(mockSpawn);
await expect(openDiff('old.txt', 'new.txt', 'vscode')).rejects.toThrow(
'spawn error',
);
});
});
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