---
name: 异步事件单元测试
overview: 结合 slot_console 现有 Free Credits 测试实践，说明异步 MQ 事件应分层测试：不直连 RabbitMQ，优先测 Logic 编排，再补 Event 解析与 EventBus 路由；并给出可新增的示例用例结构。
todos:
  - id: entity-test
    content: 新增 FreeCreditInitEntityTest：字段映射与 resolveWalletAmount 回退
    status: completed
  - id: bus-factory
    content: 新增 tests/Support/ConsoleBusMessageFactory 统一构造 MQBusEntity 载荷
    status: completed
  - id: extend-logic-tests
    content: 扩展 FreeCreditsHandleFreeCreditInitTest：幂等、无配置、异常路径
    status: completed
  - id: optional-event-inject
    content: （可选）FreeCreditInitEvent 注入 Logic + Event 单测
    status: completed
  - id: optional-eventbus-nack
    content: （可选）EventBus deal 单测：TYPE_FREE_CREDIT_INIT 成功 ack / 失败 nack
    status: completed
isProject: false
---

# 异步事件单元测试写法（slot_console）

## 当前架构

```mermaid
sequenceDiagram
    participant Wallet as slot_wallet
    participant MQ as RabbitMQ_console_bus
    participant Bus as EventBus_deal
    participant Ev as FreeCreditInitEvent
    participant Logic as FreeCreditsLogic

    Wallet->>MQ: JSON uid/type/data
    MQ->>Bus: AMQPMessage
    Bus->>Ev: case TYPE_FREE_CREDIT_INIT
    Ev->>Ev: FreeCreditInitEntity
    Ev->>Logic: handleFreeCreditInit
    Logic->>Logic: freezeFirstRecharge + wallet RPC
```

**结论**：异步只发生在 MQ 传输层；单测应测 **消息解析 → 路由 → 业务编排**，而不是启动真实 `event:bus` 或 RabbitMQ。

---

## 项目里已有的做法（推荐延续）

### 1. 单元测试：直接测 Logic（主路径）

现有 [`tests/Unit/FreeCreditsHandleFreeCreditInitTest.php`](/Users/ray/Documents/project/www/slot/slot_console/tests/Unit/FreeCreditsHandleFreeCreditInitTest.php) 已覆盖 `free_credit_init` 的**业务结果**，等价于事件消费后的效果：

- [`FreeCreditsLogicHarness`](/Users/ray/Documents/project/www/slot/slot_console/tests/Support/FreeCreditsLogicHarness.php)：注入 `userContext` / `activeConfig` / `walletService`
- [`RecordingWalletService`](/Users/ray/Documents/project/www/slot/slot_console/tests/Support/RecordingWalletService.php)：记录 `freeCreditsFreeze`，不发 HTTP
- [`FreeCreditsConfigStub`](/Users/ray/Documents/project/www/slot/slot_console/tests/Support/FreeCreditsConfigStub.php)：活动配置桩

断言示例（已有）：

- 定格金额 = `balance_before_qf`
- `biz_id` = `free_credits_freeze:{orderId}`
- `balance_before_qf <= 0` 时不调用 freeze

**运行**：

```bash
cd slot_console && ./vendor/bin/phpunit --testsuite Unit
```

提现三类事件同理：[`tests/Integration/FreeCreditsLogicCashoutResultTest.php`](/Users/ray/Documents/project/www/slot/slot_console/tests/Integration/FreeCreditsLogicCashoutResultTest.php) 直接调 `handleFirstCashoutResult`，不经过 EventBus。

### 2. 集成测试：需要 DB 时

[`FreeCreditsDbTestCase`](/Users/ray/Documents/project/www/slot/slot_console/tests/Integration/FreeCreditsDbTestCase.php)：`RUN_DB_TESTS=1` 才跑，默认事务回滚。

```bash
RUN_DB_TESTS=1 ./vendor/bin/phpunit --testsuite Integration --filter FreeCredits
```

---

## 建议的分层（按投入产出排序）

| 层级 | 测什么 | 是否必需 | 依赖 |
|------|--------|----------|------|
| A. Entity | `FreeCreditInitEntity` 字段映射、`resolveWalletAmount()` 回退 | 推荐 | 无 |
| B. Logic | `handleFreeCreditInit` / `handleFirstCashoutResult` 编排 | **已有，继续扩展** | Harness + RecordingWallet |
| C. Event | `FreeCreditInitEvent::handle` 把 `MQBusEntity` 转成 Logic 参数 | 可选 | 需可注入 Logic（见下） |
| D. EventBus | `deal()` 按 `type` 分发、失败 nack | 少量即可 | Mock `AMQPMessage` |
| E. E2E | 真 MQ + wallet 发消息 | 手工/脚本，非单测 | 环境 |

**原则**：B 覆盖 90% 风险；A 防 payload 字段错；C/D 防「路由写错 type」和「实体解析漏字段」。

---

## 可新增的测试示例

### A. Entity 单测（纯数组 → 实体）

新建 `tests/Unit/FreeCreditInitEntityTest.php`：

```php
$entity = new FreeCreditInitEntity([
    'balance_before_qf' => 15000,
    'wallet_amount' => 0,
    'amount' => 5000,
    'biz_id' => 'order_1',
]);
$this->assertSame(15000, $entity->balance_before_qf);
$this->assertSame(5000, $entity->resolveWalletAmount()); // wallet_amount 为 0 时回退 amount
```

对应生产代码：[`app/entity/mq/FreeCreditInitEntity.php`](/Users/ray/Documents/project/www/slot/slot_console/app/entity/mq/FreeCreditInitEntity.php)。

### B. 构造 MQ 载荷辅助方法

在 `tests/Support/` 增加工厂，统一模拟 wallet 发出的 body：

```php
public static function consoleBusMessage(int $uid, string $type, array $data): MQBusEntity
{
    return new MQBusEntity(['uid' => $uid, 'type' => $type, 'data' => $data]);
}

// free_credit_init 示例
public static function freeCreditInitBus(int $uid, int $balanceBefore, int $walletAmount, string $bizId): MQBusEntity
{
    return self::consoleBusMessage($uid, MQBusEntity::TYPE_FREE_CREDIT_INIT, [
        'balance_before_qf' => $balanceBefore,
        'wallet_amount' => $walletAmount,
        'biz_id' => $bizId,
        'source' => 'test',
        'currency' => 'INR',
    ]);
}
```

与 [`WalletLogic::sendConsoleBus`](/Users/ray/Documents/project/www/slot/slot_wallet/app/api/logic/WalletLogic.php) 字段保持一致。

### C. Event 层单测（当前结构的限制）

[`FreeCreditInitEvent`](/Users/ray/Documents/project/www/slot/slot_console/app/command/event/FreeCreditInitEvent.php) 内部写死 `new FreeCreditsLogic()`，**无法在不改代码的情况下 mock Logic**。

两种做法（二选一）：

1. **小重构（推荐）**：Event 构造函数注入 `FreeCreditsLogic`，单测传入 `FreeCreditsLogicHarness`。
2. **不测 Event**：认为 Event 只有 5 行胶水，由 B 层保证；仅加 A 层测 data 解析。

若采用 1，示例：

```php
$bus = ConsoleBusMessageFactory::freeCreditInitBus($uid, 15000, 5000, 'order_1');
$harness = (new FreeCreditsLogicHarness())->inject($context, $config, $wallet);
(new FreeCreditInitEvent($harness))->handle($bus);
$this->assertCount(1, $wallet->freezeCalls);
```

### D. EventBus 路由单测（少量）

Mock `PhpAmqpLib\Message\AMQPMessage`：

```php
$message = $this->createMock(AMQPMessage::class);
$message->method('getBody')->willReturn(json_encode([
    'uid' => 90088002,
    'type' => MQBusEntity::TYPE_FREE_CREDIT_INIT,
    'data' => ['balance_before_qf' => 15000, 'wallet_amount' => 5000, 'biz_id' => 'x'],
]));
$message->expects($this->once())->method('ack'); // 成功应 ack

$bus = new EventBus();
// 若 Logic 仍 new 在 Event 内，需配合 C 的注入或接受集成测
$bus->deal($message);
```

**nack 场景**（[`EventBus.php` L164-167](/Users/ray/Documents/project/www/slot/slot_console/app/command/EventBus.php)）：Logic 抛异常时，`TYPE_FREE_CREDIT_INIT` 应 `nack(true)` 且不 `ack`。可让 Harness 的 `freeCreditsFreeze` 抛异常，断言 `$message->expects($this->once())->method('nack')->with(true)`。

注意：`EventBus` 依赖多，路由测试宜 **只测 switch 分支 + ack/nack**，业务细节仍放 B。

---

## 四个 Free Credits 相关 type 怎么测

| MQ type（常量） | 单测重点 | 现有覆盖 |
|-----------------|----------|----------|
| `TYPE_FREE_CREDIT_INIT` | 定格金额、biz_id、幂等跳过 | `FreeCreditsHandleFreeCreditInitTest` |
| `TYPE_FREE_CREDITS_FIRST_CASHOUT_SUCCESS` | 档位 completed、player 状态 | `FreeCreditsLogicCashoutResultTest` |
| `TYPE_FREE_CREDITS_FIRST_CASHOUT_FAIL` | 失败回滚逻辑 | 可补 case |
| `TYPE_FREE_CREDITS_FIRST_CASHOUT_REJECTED` | rejected → ready | 已有 reject case |

EventBus 里前三类目前 **直接调 Logic**（未走独立 Event 类），单测继续打 Logic 即可；常量定义在 [`MQBusEntity`](/Users/ray/Documents/project/www/slot/slot_console/app/entity/mq/MQBusEntity.php)。

---

## 不建议在单测里做的

- 启动 `php webman event:bus` 或连接真实 RabbitMQ
- 跨服务联调 wallet → console（留给脚本如 `scripts/run_free_credits_first_freeze.php` 或手工验收）
- 在单测里依赖 `UserTagService::getByUid`（用 Harness 注入 context）

---

## 推荐落地顺序（若你要补测试）

1. 补 `FreeCreditInitEntityTest`（A）
2. 补 `ConsoleBusMessageFactory`（B 辅助）
3. 扩展 `FreeCreditsHandleFreeCreditInitTest`：无活动配置、已定格幂等、Logic 抛错
4. （可选）`FreeCreditInitEvent` 注入 Logic + Event 单测（C）
5. （可选）`EventBusFreeCreditInitTest` 只测 ack/nack（D）

```mermaid
flowchart TD
    subgraph unit [Unit 无 MQ]
        E[EntityTest]
        L[LogicHarnessTest]
    end
    subgraph optional [Optional]
        Ev[EventTest]
        Bus[EventBusRoutingTest]
    end
    subgraph integration [Integration RUN_DB_TESTS]
        DB[DbTestCase]
    end
    E --> L
    L --> Ev
    Ev --> Bus
    L --> DB
```