mpackdb

3.2 KB

1. import MPackDB, { PrimaryKeyType } from '../src/MPackDB.js';
2. import { rm } from 'fs/promises';
4. const TEST_DB_PATH = 'db/find-after-restart';
6. console.log('--- Find After Insert + Restart Test ---');
7. console.log('Tests if data survives server restart (init/compaction)\n');
9. await rm(TEST_DB_PATH, { recursive: true, force: true });
11. class User {
12. id = null;
13. name = null;
14. email = null;
15. }
17. class Users extends MPackDB {
18. _classToUse = User;
19. _primaryKey = 'id';
20. _primaryKeyType = PrimaryKeyType.UUID;
21. }
23. // Session 1: insert a user
24. console.log('SESSION 1: Insert user');
25. const db1 = new Users(`${TEST_DB_PATH}/users`);
26. const id1 = await db1.insert({ email: '[email protected]' });
27. console.log(` Inserted user: ${id1}`);
28. const [check1] = await db1.find(u => u.email === '[email protected]');
29. console.log(` Verify find in same session: ${check1 ? 'FOUND' : 'NOT FOUND'}`);
30. await db1.close();
31. console.log(' Closed DB (simulating server stop)\n');
33. // Session 2: restart — init() runs compaction, then find
34. console.log('SESSION 2: Restart and find');
35. const db2 = new Users(`${TEST_DB_PATH}/users`);
36. const [check2] = await db2.find(u => u.email === '[email protected]');
37. console.log(` Find after restart: ${check2 ? 'FOUND ' + check2.id : 'NOT FOUND'}`);
38. console.log(` ${check2 ? '✓ PASS' : '✗ FAIL — DATA LOST BY COMPACTION'}\n`);
40. // Session 2: insert second user (different email)
41. const id2 = await db2.insert({ email: '[email protected]' });
42. console.log(` Inserted second user: ${id2}`);
43. await db2.close();
44. console.log(' Closed DB\n');
46. // Session 3: restart again, check both users
47. console.log('SESSION 3: Restart and find both');
48. const db3 = new Users(`${TEST_DB_PATH}/users`);
49. const all = await db3.find();
50. console.log(` Total users: ${all.length}`);
51. for (const u of all) {
52. console.log(` ${u.id}: ${u.email}`);
53. }
54. const [check3] = await db3.find(u => u.email === '[email protected]');
55. console.log(` Find first user: ${check3 ? 'FOUND' : 'NOT FOUND'}`);
56. console.log(` ${check3 ? '✓ PASS' : '✗ FAIL'}`);
58. // Now simulate what login.js does: find, if not found insert
59. console.log('\n Simulating login for [email protected] (should find existing):');
60. const [existing] = await db3.find(u => u.email === '[email protected]');
61. if (existing) {
62. console.log(` Found existing user ${existing.id} — no duplicate insert`);
63. console.log(' ✓ PASS');
64. } else {
65. console.log(' NOT FOUND — would create duplicate!');
66. console.log(' ✗ FAIL');
67. }
69. await db3.close();
71. // Session 4: test with delete + compaction
72. console.log('\nSESSION 4: Delete a user, restart (compaction), check');
73. const db4 = new Users(`${TEST_DB_PATH}/users`);
74. await db4.delete(u => u.email === '[email protected]');
75. console.log(' Deleted [email protected]');
76. await db4.close();
78. const db5 = new Users(`${TEST_DB_PATH}/users`);
79. const afterDelete = await db5.find();
80. console.log(` After restart: ${afterDelete.length} users`);
81. for (const u of afterDelete) {
82. console.log(` ${u.id}: ${u.email}`);
83. }
84. const [shouldExist] = await db5.find(u => u.email === '[email protected]');
85. const [shouldNotExist] = await db5.find(u => u.email === '[email protected]');
86. console.log(` [email protected]: ${shouldExist ? 'FOUND ✓' : 'NOT FOUND ✗'}`);
87. console.log(` [email protected]: ${shouldNotExist ? 'FOUND ✗ (should be deleted)' : 'NOT FOUND ✓'}`);
88. await db5.close();