memind/memory-v2-runtime.test.mjs

import assert from 'node:assert/strict';
import test from 'node:test';
import { createManagedMemoryV2Runtime, createMemoryV2Runtime } from './memory-v2-runtime.mjs';

function silentLogger() {
  return {
    warnings: [],
    warn(message) {
      this.warnings.push(message);
    },
  };
}

function legacyService(memories = []) {
  return {
    async listMemories() {
      return memories;
    },
    async saveAndAnalyze() {
      return { saved: 1, analyzed: 1, memories: 1 };
    },
    async analyzeUser() {
      return { analyzed: 1, memories: 1 };
    },
  };
}

test('createMemoryV2Runtime keeps pgvector dormant without explicit pg URL', async () => {
  let importedPg = false;
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy memory' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
    },
    importPg() {
      importedPg = true;
      throw new Error('should not import pg');
    },
  });

  const result = await memory.resolve({ userId: 'u1', query: 'hello' });
  const pgvector = memory.getStatus().backends.find((backend) => backend.name === 'pgvector');

  assert.equal(importedPg, false);
  assert.equal(memory.getStatus().selectedBackend, 'legacy-conversation-memory');
  assert.equal(pgvector.available, false);
  assert.equal(pgvector.reason, 'not_configured');
  assert.deepEqual(result.memories, [{ label: 'fact', text: 'legacy memory' }]);
});

test('createMemoryV2Runtime does not open pg pool when embedding module is missing', async () => {
  let importedPg = false;
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService(),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
    },
    importPg() {
      importedPg = true;
      throw new Error('should not import pg without embedding module');
    },
  });

  const pgvector = memory.getStatus().backends.find((backend) => backend.name === 'pgvector');

  assert.equal(importedPg, false);
  assert.equal(memory.getStatus().selectedBackend, 'legacy-conversation-memory');
  assert.equal(pgvector.available, false);
  assert.equal(pgvector.reason, 'embedding_module_not_configured');
});

test('createMemoryV2Runtime ensures candidate schema before enabling MySQL persistence', async () => {
  const calls = [];
  const mysqlPool = {
    async query(sql, params = []) {
      calls.push({ sql, params });
      if (sql.startsWith('CREATE TABLE')) return [[], []];
      if (sql.startsWith('INSERT')) return [{ affectedRows: 1 }, []];
      throw new Error(`Unexpected SQL: ${sql}`);
    },
  };
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService(),
    mysqlPool,
    env: {
      MEMORY_CANDIDATE_ENABLED: '1',
      MEMORY_CANDIDATE_MODE: 'shadow',
      MEMORY_CANDIDATE_PERSISTENCE_ENABLED: '1',
    },
  });

  assert.equal(memory.getStatus().personalMemory.persistence, 'mysql');
  assert.match(calls[0].sql, /CREATE TABLE IF NOT EXISTS `h5_memory_v2_candidates`/);
  const observed = await memory.observePersonalMemory({
    userId: 'u-1',
    sessionId: 's-1',
    messages: [{ role: 'user', content: '请记住我偏好使用简洁的中文回答' }],
  });
  assert.equal(observed.accepted, 1);
  assert.equal(calls[1].sql.startsWith('INSERT'), true);
  await memory.close();
});

test('createMemoryV2Runtime fails open when candidate schema initialization fails', async () => {
  const logger = silentLogger();
  const memory = await createMemoryV2Runtime({
    logger,
    legacyMemoryService: legacyService(),
    mysqlPool: { async query() { throw new Error('ddl denied'); } },
    env: {
      MEMORY_CANDIDATE_ENABLED: '1',
      MEMORY_CANDIDATE_MODE: 'shadow',
      MEMORY_CANDIDATE_PERSISTENCE_ENABLED: '1',
    },
  });

  assert.equal(memory.getStatus().personalMemory.persistence, 'bounded-memory');
  assert.match(logger.warnings[0], /candidate persistence unavailable: ddl denied/);
  await memory.close();
});

test('createMemoryV2Runtime syncs a successful user memory write into pgvector before returning', async () => {
  const mysqlCalls = [];
  const pgCalls = [];
  class FakePool {
    async query(sql, params) {
      pgCalls.push({ sql, params });
      return { rows: [] };
    }
    async end() {}
  }
  const mysqlPool = {
    async query(sql, params) {
      mysqlCalls.push({ sql, params });
      if (sql.includes('FROM h5_user_memory_items')) {
        return [[{
          id: 'mem-new',
          user_id: 'u-1',
          label: 'fact',
          memory_text: '灰度代号 MEM-NEW',
          evidence_message_id: 'msg-1',
          source_session_id: 's-new',
          confidence: 0.9,
          status: 'active',
          created_at: 100,
          updated_at: 200,
        }]];
      }
      throw new Error(`Unexpected MySQL query: ${sql}`);
    },
  };
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    mysqlPool,
    legacyMemoryService: legacyService(),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_EVENT_LOG_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
      MEMORY_PGVECTOR_EMBEDDING_MODULE: './fake-embed.mjs',
    },
    async importPg() { return { Pool: FakePool }; },
    async importModule() { return { embedQuery: async () => [0.1, 0.2] }; },
  });

  const result = await memory.write({ userId: 'u-1', sessionId: 's-new', messages: [] });
  assert.equal(result.memories, 1);
  assert.match(mysqlCalls[0].sql, /user_id = \?/);
  assert.match(mysqlCalls[0].sql, /source_session_id = \?/);
  assert.deepEqual(mysqlCalls[0].params, ['u-1', 's-new', 50]);
  const insert = pgCalls.find((call) => call.sql.includes('INSERT INTO "memory_embeddings"'));
  assert.ok(insert);
  assert.equal(insert.params[1], '灰度代号 MEM-NEW');
  await memory.close();
});

test('createMemoryV2Runtime retries scoped pgvector sync after a deduplicated memory write', async () => {
  const pgCalls = [];
  class FakePool {
    async query(sql, params) {
      pgCalls.push({ sql, params });
      return { rows: [] };
    }
    async end() {}
  }
  const mysqlPool = {
    async query(sql) {
      if (sql.includes('FROM h5_user_memory_items')) {
        return [[{
          id: 'mem-existing',
          user_id: 'u-1',
          label: 'fact',
          memory_text: '需要重试同步的既有记忆',
          source_session_id: 's-existing',
          confidence: 0.9,
          created_at: 100,
          updated_at: 200,
        }]];
      }
      throw new Error(`Unexpected MySQL query: ${sql}`);
    },
  };
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    mysqlPool,
    legacyMemoryService: {
      ...legacyService(),
      async saveAndAnalyze() {
        return { saved: 0, analyzed: 0, memories: 0 };
      },
    },
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
      MEMORY_PGVECTOR_EMBEDDING_MODULE: './fake-embed.mjs',
    },
    async importPg() { return { Pool: FakePool }; },
    async importModule() { return { embedQuery: async () => [0.1, 0.2] }; },
  });

  const result = await memory.write({ userId: 'u-1', sessionId: 's-existing', messages: [] });
  assert.equal(result.memories, 0);
  const insert = pgCalls.find((call) => call.sql.includes('INSERT INTO "memory_embeddings"'));
  assert.ok(insert);
  assert.equal(insert.params[1], '需要重试同步的既有记忆');
  await memory.close();
});

test('createMemoryV2Runtime syncs promoted canary candidates into pgvector', async () => {
  const pgCalls = [];
  class FakePool {
    async query(sql, params) {
      pgCalls.push({ sql, params });
      return { rows: [] };
    }
    async end() {}
  }
  const mysqlPool = {
    async query(sql) {
      if (sql.startsWith('SELECT * FROM h5_memory_v2_candidates')) {
        return [[{
          user_id: 'u-1', memory_type: 'episodic', content: '候选灰度代号',
          session_id: 's-1', confidence: 0.9, evidence_json: '{}', created_at: 100,
        }]];
      }
      if (sql.startsWith('INSERT IGNORE INTO h5_user_memory_items')) return [{ affectedRows: 1 }];
      if (sql.includes('FROM h5_user_memory_items')) {
        return [[{
          id: 'mem-promoted', user_id: 'u-1', label: 'episodic', memory_text: '候选灰度代号',
          source_session_id: 's-1', confidence: 0.9, status: 'active', created_at: 100, updated_at: 200,
        }]];
      }
      throw new Error(`Unexpected MySQL query: ${sql}`);
    },
  };
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    mysqlPool,
    legacyMemoryService: legacyService(),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
      MEMORY_PGVECTOR_EMBEDDING_MODULE: './fake-embed.mjs',
      MEMORY_LIFECYCLE_ENABLED: '1',
      MEMORY_PROMOTION_ENABLED: '1',
      MEMORY_LIFECYCLE_ROLLOUT_MODE: 'canary',
      MEMORY_LIFECYCLE_ROLLOUT_USER_IDS: 'u-1',
    },
    async importPg() { return { Pool: FakePool }; },
    async importModule() { return { embedQuery: async () => [0.3, 0.4] }; },
  });

  const result = await memory.lifecycle.promote({ userId: 'u-1' });
  assert.equal(result.promoted, 1);
  assert.deepEqual(result.promotedUserIds, ['u-1']);
  const insert = pgCalls.find((call) => call.sql.includes('INSERT INTO "memory_embeddings"'));
  assert.ok(insert);
  assert.equal(insert.params[1], '候选灰度代号');
  await memory.close();
});

test('createMemoryV2Runtime selects pgvector only when pool and embedding are configured', async () => {
  const queries = [];
  let poolEnded = false;
  class FakePool {
    constructor(options) {
      this.options = options;
    }

    async query(sql, params) {
      queries.push({ sql, params, options: this.options });
      return {
        rows: [
          {
            id: 1,
            type: 'fact',
            content: 'semantic memory',
            score: 0.91,
            created_at: '2026-07-02T00:00:00.000Z',
          },
        ],
      };
    }

    async end() {
      poolEnded = true;
    }
  }

  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy memory' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
      MEMORY_PGVECTOR_EMBEDDING_MODULE: './fake-embed.mjs',
      MEMORY_PGVECTOR_POOL_MAX: '2',
    },
    async importPg(specifier) {
      assert.equal(specifier, 'pg');
      return { Pool: FakePool };
    },
    async importModule(specifier) {
      assert.match(specifier, /fake-embed\.mjs$/);
      return {
        async embedQuery(query) {
          assert.equal(query, 'memory-chain');
          return [0.1, 0.2, 0.3];
        },
      };
    },
    async fetchImpl(url, options) {
      assert.equal(url, 'http://127.0.0.1:6333/collections/memind_memory/points/search');
      assert.equal(options.method, 'POST');
      assert.deepEqual(JSON.parse(options.body), {
        vector: [0.1, 0.2, 0.3],
        limit: 4,
        with_payload: true,
        filter: {
          must: [{
            key: 'user_id',
            match: { value: 'u1' },
          }],
        },
      });
      return {
        ok: true,
        async json() {
          return {
            result: [{
              id: 'q1',
              score: 0.88,
              payload: {
                content: 'qdrant memory',
                type: 'fact',
              },
            }],
          };
        },
      };
    },
  });

  const result = await memory.resolve({ userId: 'u1', query: 'memory-chain' });

  assert.equal(memory.getStatus().selectedBackend, 'pgvector');
  assert.equal(result.source, 'pgvector');
  assert.deepEqual(result.semanticMemories, ['semantic memory']);
  assert.equal(queries.length, 1);
  assert.equal(queries[0].options.connectionString, 'postgresql://local/memory');
  assert.equal(queries[0].options.max, 2);
  assert.deepEqual(queries[0].params, ['u1', '[0.1,0.2,0.3]', 8]);

  await memory.close();
  assert.equal(poolEnded, true);
});

test('createMemoryV2Runtime falls back to legacy when pgvector init fails', async () => {
  const logger = silentLogger();
  const memory = await createMemoryV2Runtime({
    logger,
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy fallback' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
      MEMORY_PGVECTOR_EMBEDDING_MODULE: './bad-embed.mjs',
    },
    async importModule() {
      return {};
    },
  });

  const result = await memory.resolve({ userId: 'u1', query: 'hello' });
  const pgvector = memory.getStatus().backends.find((backend) => backend.name === 'pgvector');

  assert.equal(memory.getStatus().selectedBackend, 'legacy-conversation-memory');
  assert.equal(pgvector.available, false);
  assert.equal(pgvector.reason, 'init_failed');
  assert.deepEqual(result.memories, [{ label: 'fact', text: 'legacy fallback' }]);
  assert.match(logger.warnings[0], /pgvector backend unavailable/);
});

test('createMemoryV2Runtime replaces qdrant placeholder without network wiring', async () => {
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy qdrant fallback' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'qdrant',
      MEMORY_QDRANT_ENABLED: '1',
      MEMORY_QDRANT_URL: 'http://127.0.0.1:6333',
      MEMORY_QDRANT_COLLECTION: 'memind_memory',
    },
  });

  const status = memory.getStatus();
  const qdrant = status.backends.find((backend) => backend.name === 'qdrant');
  const result = await memory.resolve({ userId: 'u1', query: 'memory-chain' });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(qdrant.available, false);
  assert.equal(qdrant.reason, 'client_not_configured');
  assert.equal(qdrant.category, 'semantic');
  assert.equal(qdrant.flag, 'MEMORY_QDRANT_ENABLED');
  assert.deepEqual(result.memories, [{ label: 'fact', text: 'legacy qdrant fallback' }]);
});

test('createMemoryV2Runtime can select qdrant read-only client when embedding module is configured', async () => {
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy qdrant fallback' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'qdrant',
      MEMORY_QDRANT_ENABLED: '1',
      MEMORY_QDRANT_URL: 'http://127.0.0.1:6333',
      MEMORY_QDRANT_COLLECTION: 'memind_memory',
      MEMORY_QDRANT_EMBEDDING_MODULE: './qdrant-embed.mjs',
      MEMORY_QDRANT_LIMIT: '4',
    },
    async importModule(specifier) {
      assert.match(specifier, /qdrant-embed\.mjs$/);
      return {
        async embedQuery(query) {
          assert.equal(query, 'memory-chain');
          return [0.1, 0.2, 0.3];
        },
      };
    },
    async fetchImpl(url, options) {
      assert.equal(url, 'http://127.0.0.1:6333/collections/memind_memory/points/search');
      assert.equal(options.method, 'POST');
      assert.deepEqual(JSON.parse(options.body), {
        vector: [0.1, 0.2, 0.3],
        limit: 4,
        with_payload: true,
        filter: {
          must: [{
            key: 'user_id',
            match: { value: 'u1' },
          }],
        },
      });
      return {
        ok: true,
        async json() {
          return {
            result: [{
              id: 'q1',
              score: 0.88,
              payload: {
                content: 'qdrant memory',
                type: 'fact',
              },
            }],
          };
        },
      };
    },
  });

  const qdrant = memory.getStatus().backends.find((backend) => backend.name === 'qdrant');
  const result = await memory.resolve({ userId: 'u1', query: 'memory-chain' });

  assert.equal(memory.getStatus().selectedBackend, 'qdrant');
  assert.equal(qdrant.available, true);
  assert.equal(result.source, 'qdrant');
  assert.deepEqual(result.memories, [{
    id: 'q1',
    label: 'fact',
    text: 'qdrant memory',
    score: 0.88,
    createdAt: null,
  }]);
});

test('createManagedMemoryV2Runtime refreshes backend selection from admin config state', async () => {
  let state = {
    fingerprint: 'v1',
    overrides: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'legacy',
    },
  };
  const memory = await createManagedMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy managed' }]),
    configService: {
      async getRuntimeState() {
        return state;
      },
    },
    async importModule(specifier) {
      assert.match(specifier, /managed-embed\.mjs$/);
      return {
        async embedQuery() {
          return [0.1, 0.2, 0.3];
        },
      };
    },
    async importPg() {
      return {
        Pool: class FakePool {
          async query() {
            return {
              rows: [{
                id: 1,
                type: 'fact',
                content: 'pgvector managed',
                score: 0.9,
                created_at: '2026-07-02T00:00:00.000Z',
              }],
            };
          }

          async end() {}
        },
      };
    },
  });

  const legacyResult = await memory.resolve({ userId: 'u1', query: 'hello' });
  assert.equal(legacyResult.source, 'legacy-conversation-memory');

  state = {
    fingerprint: 'v2',
    overrides: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'pgvector',
      MEMORY_VECTOR_ENABLED: '1',
      MEMORY_PGVECTOR_ENABLED: '1',
      MEMORY_PGVECTOR_DATABASE_URL: 'postgresql://local/memory',
      MEMORY_PGVECTOR_EMBEDDING_MODULE: './managed-embed.mjs',
    },
  };

  const pgvectorResult = await memory.resolve({ userId: 'u1', query: 'hello' });
  const status = await memory.getStatus();

  assert.equal(pgvectorResult.source, 'pgvector');
  assert.equal(status.selectedBackend, 'pgvector');
  assert.equal(status.configSource, 'admin-db');
});

test('createMemoryV2Runtime reports qdrant init failure without blocking memory', async () => {
  const logger = silentLogger();
  const memory = await createMemoryV2Runtime({
    logger,
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy after qdrant error' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'qdrant',
      MEMORY_QDRANT_ENABLED: '1',
      MEMORY_QDRANT_URL: 'ftp://bad-qdrant',
    },
  });

  const status = memory.getStatus();
  const qdrant = status.backends.find((backend) => backend.name === 'qdrant');
  const result = await memory.resolve({ userId: 'u1' });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(qdrant.available, false);
  assert.equal(qdrant.reason, 'init_failed');
  assert.deepEqual(result.memories, [{ label: 'fact', text: 'legacy after qdrant error' }]);
  assert.match(logger.warnings[0], /qdrant backend unavailable/);
});

test('createMemoryV2Runtime keeps mem0 as fallback when api key is incomplete', async () => {
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy resolve with mem0' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'mem0',
      MEMORY_MEM0_ENABLED: '1',
      MEMORY_MEM0_PROJECT_ID: 'memind_project',
    },
  });

  const status = memory.getStatus();
  const mem0 = status.backends.find((backend) => backend.name === 'mem0');
  const resolved = await memory.resolve({ userId: 'u1', query: 'memory-chain' });
  const written = await memory.write({ userId: 'u1', sessionId: 's1', messages: [] });
  const compacted = await memory.compact({ userId: 'u1' });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(mem0.available, false);
  assert.equal(mem0.reason, 'api_key_not_configured');
  assert.equal(mem0.category, 'extraction');
  assert.equal(mem0.flag, 'MEMORY_MEM0_ENABLED');
  assert.deepEqual(resolved.memories, [{ label: 'fact', text: 'legacy resolve with mem0' }]);
  assert.equal(written.source, 'legacy-conversation-memory');
  assert.equal(compacted.source, 'legacy-conversation-memory');
});

test('createMemoryV2Runtime can write and compact through Mem0 HTTP client', async () => {
  const requests = [];
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy resolve with mem0' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'mem0',
      MEMORY_MEM0_ENABLED: '1',
      MEMORY_MEM0_API_KEY: 'secret',
      MEMORY_MEM0_PROJECT_ID: 'memind_project',
      MEMORY_MEM0_BASE_URL: 'https://mem0.local',
    },
    async fetchImpl(url, options) {
      requests.push({ url, body: JSON.parse(options.body) });
      return {
        ok: true,
        async json() {
          return { saved: 1, analyzed: 1, memories: 1 };
        },
      };
    },
  });

  const resolved = await memory.resolve({ userId: 'u1', query: 'memory-chain' });
  const written = await memory.write({ userId: 'u1', sessionId: 's1', messages: [{ text: 'hi' }] });
  const compacted = await memory.compact({ userId: 'u1' });

  assert.equal(memory.getStatus().selectedBackend, 'legacy-conversation-memory');
  assert.deepEqual(resolved.memories, [{ label: 'fact', text: 'legacy resolve with mem0' }]);
  assert.equal(written.source, 'mem0');
  assert.equal(compacted.source, 'mem0');
  assert.deepEqual(requests.map((request) => request.url), [
    'https://mem0.local/v1/memories',
    'https://mem0.local/v1/memories/compact',
  ]);
});

test('createMemoryV2Runtime reports mem0 init failure without blocking memory', async () => {
  const logger = silentLogger();
  const memory = await createMemoryV2Runtime({
    logger,
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy after mem0 error' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'mem0',
      MEMORY_MEM0_ENABLED: '1',
      MEMORY_MEM0_API_KEY: 'secret',
      MEMORY_MEM0_PROJECT_ID: 'bad project id',
    },
  });

  const status = memory.getStatus();
  const mem0 = status.backends.find((backend) => backend.name === 'mem0');
  const result = await memory.resolve({ userId: 'u1' });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(mem0.available, false);
  assert.equal(mem0.reason, 'init_failed');
  assert.deepEqual(result.memories, [{ label: 'fact', text: 'legacy after mem0 error' }]);
  assert.match(logger.warnings[0], /mem0 backend unavailable/);
});

test('createMemoryV2Runtime keeps letta as fallback when agent id is incomplete', async () => {
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy resolve with letta' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'letta',
      MEMORY_LETTA_ENABLED: '1',
      MEMORY_LETTA_API_KEY: 'secret',
      MEMORY_LETTA_PROJECT_ID: 'memind_project',
    },
  });

  const status = memory.getStatus();
  const letta = status.backends.find((backend) => backend.name === 'letta');
  const resolved = await memory.resolve({ userId: 'u1', query: 'memory-chain' });
  const written = await memory.write({ userId: 'u1', sessionId: 's1', messages: [] });
  const compacted = await memory.compact({ userId: 'u1' });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(letta.available, false);
  assert.equal(letta.reason, 'client_not_configured');
  assert.equal(letta.category, 'lifecycle');
  assert.equal(letta.flag, 'MEMORY_LETTA_ENABLED');
  assert.deepEqual(resolved.memories, [{ label: 'fact', text: 'legacy resolve with letta' }]);
  assert.equal(written.source, 'legacy-conversation-memory');
  assert.equal(compacted.source, 'legacy-conversation-memory');
});

test('createMemoryV2Runtime can select letta with default HTTP client', async () => {
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy letta fallback' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'letta',
      MEMORY_LETTA_ENABLED: '1',
      MEMORY_LETTA_API_KEY: 'secret',
      MEMORY_LETTA_PROJECT_ID: 'memind_project',
      MEMORY_LETTA_AGENT_ID: 'agent_1',
      MEMORY_LETTA_BASE_URL: 'https://letta.local',
    },
    async fetchImpl(url, options) {
      assert.match(url, /^https:\/\/letta\.local\/v1\/agents\/agent_1\//);
      assert.equal(options.headers.authorization, 'Bearer secret');
      if (url.endsWith('/memory')) {
        return {
          ok: true,
          async json() {
            return { memories: ['letta lifecycle memory'], activeGoals: ['memory-v2'] };
          },
        };
      }
      return {
        ok: true,
        async json() {
          return { saved: 1, analyzed: 1, memories: 1 };
        },
      };
    },
  });

  const status = memory.getStatus();
  const letta = status.backends.find((backend) => backend.name === 'letta');
  const resolved = await memory.resolve({ userId: 'u1', query: 'memory-chain' });
  const written = await memory.write({ userId: 'u1', sessionId: 's1', messages: [] });
  const compacted = await memory.compact({ userId: 'u1' });

  assert.equal(status.selectedBackend, 'letta');
  assert.equal(letta.available, true);
  assert.equal(resolved.source, 'letta');
  assert.deepEqual(resolved.memories, [{ label: 'lifecycle', text: 'letta lifecycle memory' }]);
  assert.deepEqual(resolved.activeGoals, ['memory-v2']);
  assert.equal(written.source, 'letta');
  assert.equal(compacted.source, 'letta');
});

test('createMemoryV2Runtime reports letta init failure without blocking memory', async () => {
  const logger = silentLogger();
  const memory = await createMemoryV2Runtime({
    logger,
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy after letta error' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'letta',
      MEMORY_LETTA_ENABLED: '1',
      MEMORY_LETTA_API_KEY: 'secret',
      MEMORY_LETTA_AGENT_ID: 'bad agent id',
    },
  });

  const status = memory.getStatus();
  const letta = status.backends.find((backend) => backend.name === 'letta');
  const result = await memory.resolve({ userId: 'u1' });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(letta.available, false);
  assert.equal(letta.reason, 'init_failed');
  assert.deepEqual(result.memories, [{ label: 'fact', text: 'legacy after letta error' }]);
  assert.match(logger.warnings[0], /letta backend unavailable/);
});

test('createMemoryV2Runtime wires remaining external adapters as safe fallbacks', async () => {
  const memory = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy external fallback' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'weaviate',
      MEMORY_WEAVIATE_ENABLED: '1',
      MEMORY_WEAVIATE_URL: 'https://weaviate.local',
      MEMORY_NEO4J_ENABLED: '1',
      MEMORY_NEO4J_URI: 'neo4j://localhost:7687',
      MEMORY_NEO4J_USER: 'neo4j',
      MEMORY_NEO4J_PASSWORD: 'secret',
      MEMORY_REDIS_STREAMS_ENABLED: '1',
      MEMORY_LANGGRAPH_ENABLED: '1',
      MEMORY_LANGGRAPH_POLICY_ID: 'memory_policy',
    },
  });

  const status = memory.getStatus();
  const byName = new Map(status.backends.map((backend) => [backend.name, backend]));
  const resolved = await memory.resolve({ userId: 'u1', query: 'memory-chain' });
  const written = await memory.write({ userId: 'u1', sessionId: 's1', messages: [] });

  assert.equal(status.selectedBackend, 'legacy-conversation-memory');
  assert.equal(byName.get('weaviate').reason, 'client_not_configured');
  assert.equal(byName.get('neo4j').reason, 'client_not_configured');
  assert.equal(byName.get('redis-streams').reason, 'url_not_configured');
  assert.equal(byName.get('langgraph').reason, 'client_not_configured');
  assert.deepEqual(resolved.memories, [{ label: 'fact', text: 'legacy external fallback' }]);
  assert.equal(written.source, 'legacy-conversation-memory');
});

test('createMemoryV2Runtime can select external adapters with built-in HTTP clients', async () => {
  const weaviate = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService([{ label: 'fact', text: 'legacy weaviate fallback' }]),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'weaviate',
      MEMORY_WEAVIATE_ENABLED: '1',
      MEMORY_WEAVIATE_URL: 'https://weaviate.local',
      MEMORY_WEAVIATE_EMBEDDING_MODULE: './weaviate-embed.mjs',
    },
    async importModule() {
      return { async embedQuery() { return [0.1, 0.2]; } };
    },
    async fetchImpl(url, options) {
      assert.equal(url, 'https://weaviate.local/v1/graphql');
      assert.equal(options.method, 'POST');
      return {
        ok: true,
        async json() {
          return {
            data: {
              Get: {
                MemindMemory: [{
                  content: 'weaviate selected memory',
                  _additional: { id: 'w1', certainty: 0.9 },
                }],
              },
            },
          };
        },
      };
    },
  });
  assert.equal(weaviate.getStatus().selectedBackend, 'weaviate');
  assert.equal((await weaviate.resolve({ userId: 'u1', query: 'memory-chain' })).source, 'weaviate');

  const langGraph = await createMemoryV2Runtime({
    logger: silentLogger(),
    legacyMemoryService: legacyService(),
    env: {
      MEMORY_ENABLED: '1',
      MEMORY_BACKEND: 'langgraph',
      MEMORY_LANGGRAPH_ENABLED: '1',
      MEMORY_LANGGRAPH_POLICY_ID: 'memory_policy',
      MEMORY_LANGGRAPH_URL: 'https://langgraph.local',
    },
    async fetchImpl(url, options) {
      assert.equal(url, 'https://langgraph.local/memory/resolve');
      assert.equal(options.method, 'POST');
      return {
        ok: true,
        async json() {
          return { activeGoals: ['route-memory'] };
        },
      };
    },
  });
  assert.equal(langGraph.getStatus().selectedBackend, 'langgraph');
  assert.deepEqual((await langGraph.resolve({ userId: 'u1' })).activeGoals, ['route-memory']);
});