first commit

demo/fixture/auth-service/test/token.test.js

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+const test = require('node:test');
+const assert = require('node:assert');
+const { verifyToken } = require('../src/token');
+
+test('未过期的令牌可用', () => {
+  assert.deepStrictEqual(verifyToken({ sub: 'u1', exp: 1000 }, 999), { ok: true, userId: 'u1' });
+});
+
+test('过期之后的令牌被拒绝', () => {
+  assert.strictEqual(verifyToken({ sub: 'u1', exp: 1000 }, 1001).ok, false);
+});
+
+test('格式不对的令牌被拒绝', () => {
+  assert.strictEqual(verifyToken({ sub: 'u1' }, 1).reason, 'malformed');
+});