使用React js完成web前端

chusql-web/frontend/bin/lib/config.test.js

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+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import { afterEach, describe, expect, it } from 'vitest';
+import { DEFAULT_CONFIG, getAtPath, parseConfigValue, readConfig, setAtPath, unsetAtPath, writeConfig } from './config.js';
+
+// 覆盖 CLI 配置读写、取值解析与路径安全。
+
+const temporaryDirectories = [];
+
+afterEach(() => {
+  for (const directory of temporaryDirectories.splice(0)) fs.rmSync(directory, { recursive: true, force: true });
+});
+
+function temporaryConfig() {
+  const directory = fs.mkdtempSync(path.join(os.tmpdir(), 'chusql-cli-'));
+  temporaryDirectories.push(directory);
+  return path.join(directory, 'nested', 'config.json');
+}
+
+describe('CLI configuration', () => {
+  it('creates the formatted default configuration on first read', () => {
+    const file = temporaryConfig();
+    expect(readConfig(file)).toEqual(DEFAULT_CONFIG);
+    expect(fs.readFileSync(file, 'utf8')).toBe(`${JSON.stringify(DEFAULT_CONFIG, null, 2)}\n`);
+  });
+
+  it('persists dotted paths and can remove them', () => {
+    const file = temporaryConfig();
+    const config = readConfig(file);
+    setAtPath(config, 'db.host', 'localhost');
+    writeConfig(file, config);
+    expect(getAtPath(readConfig(file), 'db.host')).toBe('localhost');
+    expect(unsetAtPath(config, 'db.host')).toBe(true);
+    expect(getAtPath(config, 'db.host')).toBeUndefined();
+  });
+
+  it('parses numbers and booleans without changing ordinary text', () => {
+    expect(parseConfigValue('5173')).toBe(5173);
+    expect(parseConfigValue('true')).toBe(true);
+    expect(parseConfigValue('rest')).toBe('rest');
+  });
+
+  it('rejects prototype-polluting configuration paths', () => {
+    const config = {};
+    expect(() => setAtPath(config, '__proto__.polluted', true)).toThrow('forbidden path segment');
+    expect({}.polluted).toBeUndefined();
+  });
+});