如何使用Nimble测试通知的userInfo部分？

import Nimble

describe("Notification Tests") {
    context("when testing userInfo") {
        it("should have the correct data") {
            // 测试代码
        }
    }
}

import NotificationCenter

// ...

it("should have the correct data") {
    // 模拟发送通知
    NotificationCenter.default.post(name: NSNotification.Name("TestNotification"), object: nil, userInfo: ["key": "value"])
    
    // 检查通知的userInfo
    expect(NotificationCenter.default.userInfo).toNot(beNil())
    expect(NotificationCenter.default.userInfo?["key"] as? String).to(equal("value"))
}