How to exit from `RunLoop`

I'm subclassing InputStream from iOS Foundation SDK for my needs. I need to implement functionality that worker thread can sleep until data appear in the stream. The test I'm using to cover the functionality is below:

    func testStreamWithRunLoop() {
        let inputStream = BLEInputStream() // custom input stream subclass
        inputStream.delegate = self
        let len = Int.random(in: 0..<100)
        let randomData = randData(length: len) // random data generation
        
        let tenSeconds = Double(10)
        let oneSecond = TimeInterval(1)
        runOnBackgroundQueueAfter(oneSecond) {
            inputStream.accept(randomData) // input stream receives the data
        }
        let dateInFuture = Date(timeIntervalSinceNow: tenSeconds) // time in 10 sec
        inputStream.schedule(in: .current, forMode: RunLoop.Mode.default) // 
        RunLoop.current.run(until: dateInFuture) // wait for data appear in input stream
        XCTAssertTrue(dateInFuture.timeIntervalSinceNow > 0, "Timeout. RunLoop didn't exit in 1 sec. ")
    }

Here it is the overriden methods of InputStream

    public override func schedule(in aRunLoop: RunLoop, forMode mode: RunLoop.Mode) {
        self.runLoop = aRunLoop // save RunLoop object
        var context = CFRunLoopSourceContext() // make context
        self.runLoopSource = CFRunLoopSourceCreate(nil, 0, &context) // version 0 CFRunLoopSource
        let cfloopMode: CFRunLoopMode = CFRunLoopMode(mode as CFString) 
        CFRunLoopAddSource(aRunLoop.getCFRunLoop(), self.runLoopSource!, cfloopMode)
    }

public func accept(_ data: Data) { 
        guard data.count > 0 else { return }
        
        self.data += data
        delegate?.stream?(self, handle: .hasBytesAvailable)
        
        if let runLoopSource {
            CFRunLoopSourceSignal(runLoopSource)
        }
        if let runLoop {
            CFRunLoopWakeUp(runLoop.getCFRunLoop())
        }
    }

But calling CFRunLoopSourceSignal(runLoopSource) and CFRunLoopWakeUp(runLoop.getCFRunLoop()) not get exit from runLoop. Runloop exits after 10 seconds.

[![Test is failing][1]][1] Does anybody know where I'm mistaking ?

Thanks all!

PS: [2]: Here the Xcode project on GitHub