mirror of
https://github.com/AutoMaker-Org/automaker.git
synced 2026-01-30 14:22:02 +00:00
8661f33c6d
- Introduced atomic write functionality for JSON files to ensure data integrity during writes. - Added recovery mechanisms to read JSON files with fallback options for corrupted or missing files. - Enhanced existing services to utilize atomic write and recovery features for improved reliability. - Updated tests to cover new atomic writing and recovery scenarios, ensuring robust error handling and data consistency.
710 lines
26 KiB
TypeScript
710 lines
26 KiB
TypeScript
import { describe, it, expect, beforeEach, afterEach, vi, type MockInstance } from 'vitest';
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import fs from 'fs/promises';
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import path from 'path';
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import os from 'os';
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import { secureFs } from '@automaker/platform';
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import {
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atomicWriteJson,
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readJsonFile,
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updateJsonAtomically,
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readJsonWithRecovery,
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} from '../src/atomic-writer';
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// Mock secureFs
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vi.mock('@automaker/platform', () => ({
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secureFs: {
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writeFile: vi.fn(),
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readFile: vi.fn(),
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rename: vi.fn(),
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unlink: vi.fn(),
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readdir: vi.fn(),
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copyFile: vi.fn(),
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access: vi.fn(),
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lstat: vi.fn(),
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mkdir: vi.fn(),
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},
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}));
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// Mock logger to suppress output during tests
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vi.mock('../src/logger.js', () => ({
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createLogger: () => ({
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info: vi.fn(),
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warn: vi.fn(),
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error: vi.fn(),
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debug: vi.fn(),
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}),
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}));
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describe('atomic-writer.ts', () => {
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let tempDir: string;
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beforeEach(async () => {
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// Create a temporary directory for integration tests
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tempDir = await fs.mkdtemp(path.join(os.tmpdir(), 'atomic-writer-test-'));
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vi.clearAllMocks();
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});
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afterEach(async () => {
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// Clean up temporary directory
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try {
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await fs.rm(tempDir, { recursive: true, force: true });
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} catch {
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// Ignore cleanup errors
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}
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});
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describe('atomicWriteJson', () => {
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it('should write JSON data atomically', async () => {
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const filePath = path.join(tempDir, 'test.json');
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const data = { key: 'value', number: 42 };
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await atomicWriteJson(filePath, data);
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// Verify writeFile was called with temp file path and JSON content
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expect(secureFs.writeFile).toHaveBeenCalledTimes(1);
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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expect(writeCall[0]).toMatch(/\.tmp\.\d+$/);
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expect(writeCall[1]).toBe(JSON.stringify(data, null, 2));
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expect(writeCall[2]).toBe('utf-8');
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// Verify rename was called with temp -> target
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expect(secureFs.rename).toHaveBeenCalledTimes(1);
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const renameCall = (secureFs.rename as unknown as MockInstance).mock.calls[0];
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expect(renameCall[0]).toMatch(/\.tmp\.\d+$/);
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expect(renameCall[1]).toBe(path.resolve(filePath));
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});
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it('should use custom indentation', async () => {
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const filePath = path.join(tempDir, 'test.json');
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const data = { key: 'value' };
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await atomicWriteJson(filePath, data, { indent: 4 });
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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expect(writeCall[1]).toBe(JSON.stringify(data, null, 4));
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});
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it('should clean up temp file on write failure', async () => {
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const filePath = path.join(tempDir, 'test.json');
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const data = { key: 'value' };
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const writeError = new Error('Write failed');
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(secureFs.writeFile as unknown as MockInstance).mockRejectedValue(writeError);
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(secureFs.unlink as unknown as MockInstance).mockResolvedValue(undefined);
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await expect(atomicWriteJson(filePath, data)).rejects.toThrow('Write failed');
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expect(secureFs.unlink).toHaveBeenCalledTimes(1);
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});
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it('should clean up temp file on rename failure', async () => {
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const filePath = path.join(tempDir, 'test.json');
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const data = { key: 'value' };
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const renameError = new Error('Rename failed');
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockRejectedValue(renameError);
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(secureFs.unlink as unknown as MockInstance).mockResolvedValue(undefined);
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await expect(atomicWriteJson(filePath, data)).rejects.toThrow('Rename failed');
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expect(secureFs.unlink).toHaveBeenCalledTimes(1);
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});
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it('should ignore cleanup errors', async () => {
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const filePath = path.join(tempDir, 'test.json');
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const data = { key: 'value' };
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const writeError = new Error('Write failed');
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const unlinkError = new Error('Unlink failed');
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(secureFs.writeFile as unknown as MockInstance).mockRejectedValue(writeError);
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(secureFs.unlink as unknown as MockInstance).mockRejectedValue(unlinkError);
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// Should still throw the original error, not the cleanup error
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await expect(atomicWriteJson(filePath, data)).rejects.toThrow('Write failed');
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});
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it('should resolve relative paths', async () => {
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const relativePath = 'test.json';
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const data = { key: 'value' };
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await atomicWriteJson(relativePath, data);
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const renameCall = (secureFs.rename as unknown as MockInstance).mock.calls[0];
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expect(renameCall[1]).toBe(path.resolve(relativePath));
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});
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it('should handle arrays as data', async () => {
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const filePath = path.join(tempDir, 'array.json');
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const data = [1, 2, 3, { nested: 'value' }];
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await atomicWriteJson(filePath, data);
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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expect(writeCall[1]).toBe(JSON.stringify(data, null, 2));
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});
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it('should handle null and primitive values', async () => {
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const filePath = path.join(tempDir, 'primitive.json');
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await atomicWriteJson(filePath, null);
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expect((secureFs.writeFile as unknown as MockInstance).mock.calls[0][1]).toBe('null');
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await atomicWriteJson(filePath, 'string');
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expect((secureFs.writeFile as unknown as MockInstance).mock.calls[1][1]).toBe('"string"');
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await atomicWriteJson(filePath, 123);
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expect((secureFs.writeFile as unknown as MockInstance).mock.calls[2][1]).toBe('123');
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});
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it('should create directories when createDirs is true', async () => {
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const filePath = path.join(tempDir, 'nested', 'deep', 'test.json');
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const data = { key: 'value' };
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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// Mock lstat to indicate directory already exists
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(secureFs.lstat as unknown as MockInstance).mockResolvedValue({
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isDirectory: () => true,
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isSymbolicLink: () => false,
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});
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await atomicWriteJson(filePath, data, { createDirs: true });
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expect(secureFs.writeFile).toHaveBeenCalled();
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});
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});
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describe('readJsonFile', () => {
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it('should read and parse JSON file', async () => {
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const filePath = path.join(tempDir, 'read.json');
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const data = { key: 'value', count: 5 };
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(secureFs.readFile as unknown as MockInstance).mockResolvedValue(JSON.stringify(data));
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const result = await readJsonFile(filePath, {});
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expect(result).toEqual(data);
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expect(secureFs.readFile).toHaveBeenCalledWith(path.resolve(filePath), 'utf-8');
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});
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it('should return default value when file does not exist', async () => {
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const filePath = path.join(tempDir, 'nonexistent.json');
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const defaultValue = { default: true };
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
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const result = await readJsonFile(filePath, defaultValue);
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expect(result).toEqual(defaultValue);
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});
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it('should return default value when JSON is invalid', async () => {
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const filePath = path.join(tempDir, 'invalid.json');
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const defaultValue = { default: true };
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(secureFs.readFile as unknown as MockInstance).mockResolvedValue('not valid json');
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const result = await readJsonFile(filePath, defaultValue);
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expect(result).toEqual(defaultValue);
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});
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it('should return default value for other read errors', async () => {
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const filePath = path.join(tempDir, 'error.json');
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const defaultValue = { default: true };
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const accessError = new Error('Access denied') as NodeJS.ErrnoException;
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accessError.code = 'EACCES';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(accessError);
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const result = await readJsonFile(filePath, defaultValue);
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expect(result).toEqual(defaultValue);
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});
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it('should handle empty object as default', async () => {
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const filePath = path.join(tempDir, 'nonexistent.json');
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
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const result = await readJsonFile<Record<string, unknown>>(filePath, {});
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expect(result).toEqual({});
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});
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it('should handle array as default', async () => {
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const filePath = path.join(tempDir, 'nonexistent.json');
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
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const result = await readJsonFile<string[]>(filePath, []);
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expect(result).toEqual([]);
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});
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it('should parse nested objects correctly', async () => {
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const filePath = path.join(tempDir, 'nested.json');
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const data = {
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level1: {
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level2: {
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value: 'deep',
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array: [1, 2, { nested: true }],
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},
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},
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};
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(secureFs.readFile as unknown as MockInstance).mockResolvedValue(JSON.stringify(data));
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const result = await readJsonFile(filePath, {});
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expect(result).toEqual(data);
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});
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});
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describe('updateJsonAtomically', () => {
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it('should read, update, and write file atomically', async () => {
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const filePath = path.join(tempDir, 'update.json');
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const initialData = { count: 5 };
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const defaultValue = { count: 0 };
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(secureFs.readFile as unknown as MockInstance).mockResolvedValue(JSON.stringify(initialData));
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await updateJsonAtomically(filePath, defaultValue, (data) => ({
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...data,
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count: data.count + 1,
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}));
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// Verify the write was called with updated data
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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const writtenData = JSON.parse(writeCall[1]);
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expect(writtenData.count).toBe(6);
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});
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it('should use default value when file does not exist', async () => {
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const filePath = path.join(tempDir, 'new.json');
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const defaultValue = { count: 0 };
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await updateJsonAtomically(filePath, defaultValue, (data) => ({
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...data,
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count: data.count + 1,
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}));
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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const writtenData = JSON.parse(writeCall[1]);
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expect(writtenData.count).toBe(1);
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});
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it('should support async updater function', async () => {
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const filePath = path.join(tempDir, 'async.json');
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const initialData = { value: 'initial' };
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(secureFs.readFile as unknown as MockInstance).mockResolvedValue(JSON.stringify(initialData));
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await updateJsonAtomically(filePath, {}, async (data) => {
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await new Promise((resolve) => setTimeout(resolve, 10));
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return { ...data, value: 'updated' };
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});
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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const writtenData = JSON.parse(writeCall[1]);
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expect(writtenData.value).toBe('updated');
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});
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it('should pass through options to atomicWriteJson', async () => {
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const filePath = path.join(tempDir, 'options.json');
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
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(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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await updateJsonAtomically(filePath, { key: 'value' }, (d) => d, { indent: 4 });
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const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
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expect(writeCall[1]).toBe(JSON.stringify({ key: 'value' }, null, 4));
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});
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});
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describe('readJsonWithRecovery', () => {
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it('should return main file data when available', async () => {
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const filePath = path.join(tempDir, 'main.json');
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const data = { main: true };
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(secureFs.readFile as unknown as MockInstance).mockResolvedValue(JSON.stringify(data));
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const result = await readJsonWithRecovery(filePath, {});
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expect(result.data).toEqual(data);
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expect(result.recovered).toBe(false);
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expect(result.source).toBe('main');
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expect(result.error).toBeUndefined();
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});
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it('should recover from temp file when main file is missing', async () => {
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const filePath = path.join(tempDir, 'data.json');
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const tempData = { fromTemp: true };
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const fileName = path.basename(filePath);
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance)
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.mockRejectedValueOnce(enoentError) // Main file
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.mockResolvedValueOnce(JSON.stringify(tempData)); // Temp file
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(secureFs.readdir as unknown as MockInstance).mockResolvedValue([
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`${fileName}.tmp.1234567890`,
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'other-file.json',
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]);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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const result = await readJsonWithRecovery(filePath, {});
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expect(result.data).toEqual(tempData);
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expect(result.recovered).toBe(true);
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expect(result.source).toBe('temp');
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expect(result.error).toBe('File does not exist');
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});
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it('should recover from backup file when main and temp are unavailable', async () => {
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const filePath = path.join(tempDir, 'data.json');
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const backupData = { fromBackup: true };
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance)
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.mockRejectedValueOnce(enoentError) // Main file
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.mockRejectedValueOnce(enoentError) // backup1
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.mockResolvedValueOnce(JSON.stringify(backupData)); // backup2
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(secureFs.readdir as unknown as MockInstance).mockResolvedValue([]); // No temp files
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(secureFs.copyFile as unknown as MockInstance).mockResolvedValue(undefined);
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const result = await readJsonWithRecovery(filePath, {});
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expect(result.data).toEqual(backupData);
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expect(result.recovered).toBe(true);
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expect(result.source).toBe('backup');
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});
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it('should return default when all recovery attempts fail', async () => {
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const filePath = path.join(tempDir, 'data.json');
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const defaultValue = { default: true };
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
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(secureFs.readdir as unknown as MockInstance).mockResolvedValue([]);
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const result = await readJsonWithRecovery(filePath, defaultValue);
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expect(result.data).toEqual(defaultValue);
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expect(result.recovered).toBe(true);
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expect(result.source).toBe('default');
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expect(result.error).toBe('File does not exist');
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});
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it('should try multiple temp files in order', async () => {
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const filePath = path.join(tempDir, 'data.json');
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const fileName = path.basename(filePath);
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const validTempData = { valid: true };
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance)
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.mockRejectedValueOnce(enoentError) // Main file
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.mockResolvedValueOnce('invalid json') // First temp file (invalid)
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.mockResolvedValueOnce(JSON.stringify(validTempData)); // Second temp file
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(secureFs.readdir as unknown as MockInstance).mockResolvedValue([
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`${fileName}.tmp.9999999999`, // Most recent
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`${fileName}.tmp.1111111111`, // Older
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]);
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(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
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const result = await readJsonWithRecovery(filePath, {});
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expect(result.data).toEqual(validTempData);
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expect(result.source).toBe('temp');
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});
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it('should try multiple backup files in order', async () => {
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const filePath = path.join(tempDir, 'data.json');
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const backupData = { backup2: true };
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const enoentError = new Error('File not found') as NodeJS.ErrnoException;
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enoentError.code = 'ENOENT';
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(secureFs.readFile as unknown as MockInstance)
|
|
.mockRejectedValueOnce(enoentError) // Main file
|
|
.mockRejectedValueOnce(enoentError) // .bak1
|
|
.mockResolvedValueOnce(JSON.stringify(backupData)); // .bak2
|
|
|
|
(secureFs.readdir as unknown as MockInstance).mockResolvedValue([]);
|
|
|
|
(secureFs.copyFile as unknown as MockInstance).mockResolvedValue(undefined);
|
|
|
|
const result = await readJsonWithRecovery(filePath, {});
|
|
|
|
expect(result.data).toEqual(backupData);
|
|
expect(result.source).toBe('backup');
|
|
|
|
// Verify it tried .bak1 first
|
|
expect(secureFs.readFile).toHaveBeenNthCalledWith(
|
|
2,
|
|
`${path.resolve(filePath)}.bak1`,
|
|
'utf-8'
|
|
);
|
|
});
|
|
|
|
it('should respect maxBackups option', async () => {
|
|
const filePath = path.join(tempDir, 'data.json');
|
|
const defaultValue = { default: true };
|
|
|
|
const enoentError = new Error('File not found') as NodeJS.ErrnoException;
|
|
enoentError.code = 'ENOENT';
|
|
|
|
(secureFs.readFile as unknown as MockInstance).mockRejectedValue(enoentError);
|
|
(secureFs.readdir as unknown as MockInstance).mockResolvedValue([]);
|
|
|
|
const result = await readJsonWithRecovery(filePath, defaultValue, { maxBackups: 1 });
|
|
|
|
expect(result.source).toBe('default');
|
|
// Should only have tried main + 1 backup
|
|
expect(secureFs.readFile).toHaveBeenCalledTimes(2);
|
|
});
|
|
|
|
it('should not auto-restore when autoRestore is false', async () => {
|
|
const filePath = path.join(tempDir, 'data.json');
|
|
const fileName = path.basename(filePath);
|
|
const tempData = { fromTemp: true };
|
|
|
|
const enoentError = new Error('File not found') as NodeJS.ErrnoException;
|
|
enoentError.code = 'ENOENT';
|
|
|
|
(secureFs.readFile as unknown as MockInstance)
|
|
.mockRejectedValueOnce(enoentError)
|
|
.mockResolvedValueOnce(JSON.stringify(tempData));
|
|
|
|
(secureFs.readdir as unknown as MockInstance).mockResolvedValue([`${fileName}.tmp.123`]);
|
|
|
|
const result = await readJsonWithRecovery(filePath, {}, { autoRestore: false });
|
|
|
|
expect(result.data).toEqual(tempData);
|
|
expect(secureFs.rename).not.toHaveBeenCalled();
|
|
expect(secureFs.copyFile).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it('should handle directory read errors gracefully', async () => {
|
|
const filePath = path.join(tempDir, 'data.json');
|
|
const backupData = { backup: true };
|
|
|
|
const enoentError = new Error('File not found') as NodeJS.ErrnoException;
|
|
enoentError.code = 'ENOENT';
|
|
|
|
(secureFs.readFile as unknown as MockInstance)
|
|
.mockRejectedValueOnce(enoentError) // Main file
|
|
.mockResolvedValueOnce(JSON.stringify(backupData)); // backup1
|
|
|
|
(secureFs.readdir as unknown as MockInstance).mockRejectedValue(new Error('Dir read failed'));
|
|
(secureFs.copyFile as unknown as MockInstance).mockResolvedValue(undefined);
|
|
|
|
const result = await readJsonWithRecovery(filePath, {});
|
|
|
|
// Should skip temp files and go to backups
|
|
expect(result.data).toEqual(backupData);
|
|
expect(result.source).toBe('backup');
|
|
});
|
|
|
|
it('should handle corrupted main file with valid error message', async () => {
|
|
const filePath = path.join(tempDir, 'corrupted.json');
|
|
const defaultValue = { default: true };
|
|
|
|
const parseError = new SyntaxError('Unexpected token');
|
|
(secureFs.readFile as unknown as MockInstance).mockResolvedValueOnce('{{invalid');
|
|
(secureFs.readdir as unknown as MockInstance).mockResolvedValue([]);
|
|
|
|
// Mock to actually throw parse error
|
|
(secureFs.readFile as unknown as MockInstance).mockImplementationOnce(() => {
|
|
return Promise.resolve('{{invalid json');
|
|
});
|
|
|
|
const result = await readJsonWithRecovery(filePath, defaultValue);
|
|
|
|
expect(result.recovered).toBe(true);
|
|
expect(result.error).toContain('Failed to parse');
|
|
});
|
|
|
|
it('should handle restore failures gracefully', async () => {
|
|
const filePath = path.join(tempDir, 'data.json');
|
|
const fileName = path.basename(filePath);
|
|
const tempData = { fromTemp: true };
|
|
|
|
const enoentError = new Error('File not found') as NodeJS.ErrnoException;
|
|
enoentError.code = 'ENOENT';
|
|
|
|
(secureFs.readFile as unknown as MockInstance)
|
|
.mockRejectedValueOnce(enoentError)
|
|
.mockResolvedValueOnce(JSON.stringify(tempData));
|
|
|
|
(secureFs.readdir as unknown as MockInstance).mockResolvedValue([`${fileName}.tmp.123`]);
|
|
(secureFs.rename as unknown as MockInstance).mockRejectedValue(new Error('Restore failed'));
|
|
|
|
const result = await readJsonWithRecovery(filePath, {});
|
|
|
|
// Should still return data even if restore failed
|
|
expect(result.data).toEqual(tempData);
|
|
expect(result.source).toBe('temp');
|
|
});
|
|
});
|
|
|
|
describe('Edge cases', () => {
|
|
it('should handle empty file path gracefully', async () => {
|
|
(secureFs.readFile as unknown as MockInstance).mockRejectedValue(new Error('Invalid path'));
|
|
|
|
const result = await readJsonFile('', { default: true });
|
|
|
|
expect(result).toEqual({ default: true });
|
|
});
|
|
|
|
it('should handle special characters in file path', async () => {
|
|
const filePath = path.join(tempDir, 'file with spaces & special!.json');
|
|
const data = { special: 'chars' };
|
|
|
|
(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
|
|
(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
|
|
|
|
await atomicWriteJson(filePath, data);
|
|
|
|
expect(secureFs.writeFile).toHaveBeenCalled();
|
|
});
|
|
|
|
it('should handle very large objects', async () => {
|
|
const filePath = path.join(tempDir, 'large.json');
|
|
const largeArray = Array.from({ length: 10000 }, (_, i) => ({
|
|
id: i,
|
|
data: `item-${i}`,
|
|
}));
|
|
|
|
(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
|
|
(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
|
|
|
|
await atomicWriteJson(filePath, largeArray);
|
|
|
|
const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
|
|
expect(JSON.parse(writeCall[1])).toEqual(largeArray);
|
|
});
|
|
|
|
it('should handle unicode content', async () => {
|
|
const filePath = path.join(tempDir, 'unicode.json');
|
|
const data = { emoji: '🎉', japanese: 'こんにちは', chinese: '你好' };
|
|
|
|
(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
|
|
(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
|
|
|
|
await atomicWriteJson(filePath, data);
|
|
|
|
const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
|
|
expect(JSON.parse(writeCall[1])).toEqual(data);
|
|
});
|
|
|
|
it('should handle circular reference error in JSON', async () => {
|
|
const filePath = path.join(tempDir, 'circular.json');
|
|
const circular: Record<string, unknown> = { key: 'value' };
|
|
circular.self = circular;
|
|
|
|
await expect(atomicWriteJson(filePath, circular)).rejects.toThrow();
|
|
});
|
|
});
|
|
|
|
describe('Type safety', () => {
|
|
interface TestConfig {
|
|
version: number;
|
|
settings: {
|
|
enabled: boolean;
|
|
name: string;
|
|
};
|
|
}
|
|
|
|
it('should preserve types in readJsonFile', async () => {
|
|
const filePath = path.join(tempDir, 'config.json');
|
|
const expected: TestConfig = {
|
|
version: 1,
|
|
settings: { enabled: true, name: 'test' },
|
|
};
|
|
|
|
(secureFs.readFile as unknown as MockInstance).mockResolvedValue(JSON.stringify(expected));
|
|
|
|
const result = await readJsonFile<TestConfig>(filePath, {
|
|
version: 0,
|
|
settings: { enabled: false, name: '' },
|
|
});
|
|
|
|
expect(result.version).toBe(1);
|
|
expect(result.settings.enabled).toBe(true);
|
|
expect(result.settings.name).toBe('test');
|
|
});
|
|
|
|
it('should preserve types in updateJsonAtomically', async () => {
|
|
const filePath = path.join(tempDir, 'counter.json');
|
|
|
|
interface Counter {
|
|
count: number;
|
|
}
|
|
|
|
(secureFs.readFile as unknown as MockInstance).mockResolvedValue(
|
|
JSON.stringify({ count: 5 })
|
|
);
|
|
(secureFs.writeFile as unknown as MockInstance).mockResolvedValue(undefined);
|
|
(secureFs.rename as unknown as MockInstance).mockResolvedValue(undefined);
|
|
|
|
await updateJsonAtomically<Counter>(filePath, { count: 0 }, (data) => ({
|
|
count: data.count + 1,
|
|
}));
|
|
|
|
const writeCall = (secureFs.writeFile as unknown as MockInstance).mock.calls[0];
|
|
const writtenData: Counter = JSON.parse(writeCall[1]);
|
|
expect(writtenData.count).toBe(6);
|
|
});
|
|
});
|
|
});
|