OkHttp MockWebServer не может принимать соединения на новом экземпляре

Question

Я использую OkHttp MockWebServer, чтобы высмеивать ответы сервера.

Я реализовал два класса тестов, первый из которых содержит два теста, а второй - один тест. Первый класс работает нормально, но для второго класса есть ошибка, потому что сервер сокетов закрыт.

Первый тестовый класс

@RunWith(AndroidJUnit4::class)
class LoginActivityTest : TestCase() {

    private lateinit var server: MockWebServer

    @Before
    override public fun setUp() {
        super.setUp()
        server = MockWebServer()
        server.start()
        ApplicationConstants.APP_BASE_URL = server.url("/localhost/").toString()
    }

    @After
    @Throws(Exception::class)
    public override fun tearDown() {
        server.shutdown()
    }

    @Test
    fun successLogin() {
        //given
        server.enqueue(MockResponse()
                .setResponseCode(200)
                .setBody("{...}")
        )
        //rest of the UI test class
    }

    @Test
    fun testAuthenticationFailed() {
        //given
        server.enqueue(MockResponse()
                .setResponseCode(403)
                .setBody("{...}")
        )
        //Rest of the UI test class

    }

}

Журнал правильный для двух тестов

01-02 09:31:23.100 28693-28740/com.mycompany.app D/OkHttp: --> POST http://localhost:39762/client/index.php/rest/login
01-02 09:31:23.100 28693-28740/com.mycompany.app D/OkHttp: Content-Type: application/x-www-form-urlencoded
01-02 09:31:23.101 28693-28740/com.mycompany.app D/OkHttp: Content-Length: 26
01-02 09:31:23.102 28693-28740/com.mycompany.app D/OkHttp: login=admin&password=admin
01-02 09:31:23.103 28693-28740/com.mycompany.app D/OkHttp: --> END POST (26-byte body)
01-02 09:31:23.119 28693-28742/com.mycompany.app I/MockWebServer: MockWebServer[39762] received request: POST /client/index.php/rest/login HTTP/1.1 and responded: HTTP/1.1 200 OK
01-02 09:31:23.121 28693-28740/com.mycompany.app D/OkHttp: <-- 200 OK http://localhost:39762/client/index.php/rest/login (18ms)

01-02 09:31:28.554 28693-28765/com.mycompany.app D/OkHttp: --> POST http://localhost:52440/Unknown%20Client/index.php/rest/login
01-02 09:31:28.554 28693-28765/com.mycompany.app D/OkHttp: Content-Type: application/x-www-form-urlencoded
01-02 09:31:28.555 28693-28765/com.mycompany.app D/OkHttp: Content-Length: 34
01-02 09:31:28.555 28693-28765/com.mycompany.app D/OkHttp: login=Wrong%20Login&password=admin
01-02 09:31:28.555 28693-28765/com.mycompany.app D/OkHttp: --> END POST (34-byte body)
01-02 09:31:28.571 28693-28767/com.mycompany.app I/MockWebServer: MockWebServer[52440] received request: POST /Unknown%20Client/index.php/rest/login HTTP/1.1 and responded: HTTP/1.1 403 Client Error
01-02 09:31:28.571 28693-28765/com.mycompany.app D/OkHttp: <-- 403 Client Error http://localhost:52440/Unknown%20Client/index.php/rest/login (15ms)
01-02 09:31:28.571 28693-28765/com.mycompany.app D/OkHttp: Content-Length: 33
01-02 09:31:28.571 28693-28765/com.mycompany.app D/OkHttp: {"message": "Forbidden access!"}
01-02 09:31:28.571 28693-28765/com.mycompany.app D/OkHttp: <-- END HTTP (33-byte body)
01-02 09:31:28.574 28693-28693/com.mycompany.app E/LoginActivity: HTTP 403 Client Error

Второй класс не работает и вызывается после первого класса

@RunWith(AndroidJUnit4::class)
class LoginServiceTest : TestCase() {
    private lateinit var server: MockWebServer
    private lateinit var loginService: LoginService

    @Before
    override public fun setUp() {
        super.setUp()
        server = MockWebServer()
        server.start()
        ApplicationConstants.APP_BASE_URL = server.url("/localhost/").toString()
        loginService = ServiceGenerator.createService(LoginService::class.java)
    }

    @After
    @Throws(Exception::class)
    public override fun tearDown() {
        server.shutdown()
    }

    @Test
    @Throws(Exception::class)
    fun testSuccessResponse() {
        //Given
        server.enqueue(MockResponse()
                .setResponseCode(200)
                .setBody("{...}")
        )

        loginService.login("login", "password").subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(
                        { _ ->
                            Assert.assertTrue(false)
                        },
                        { _ ->
                            Assert.assertTrue(false)
                        }
                )
    }
}

Файл журнала, причина сокета закрыта

01-02 09:31:29.919 28693-28776/com.mycompany.app I/MockWebServer: MockWebServer[59904] starting to accept connections
01-02 09:31:29.924 28693-28765/com.mycompany.app D/OkHttp: --> POST http://localhost:59904/client/index.php/rest/login
01-02 09:31:29.924 28693-28765/com.mycompany.app D/OkHttp: Content-Type: application/x-www-form-urlencoded
01-02 09:31:29.925 28693-28765/com.mycompany.app D/OkHttp: Content-Length: 24
01-02 09:31:29.925 28693-28765/com.mycompany.app D/OkHttp: login=login&password=password
01-02 09:31:29.925 28693-28765/com.mycompany.app D/OkHttp: --> END POST (24-byte body)
01-02 09:31:29.929 28693-28776/com.mycompany.app I/MockWebServer: MockWebServer[59904] done accepting connections: Socket closed
01-02 09:31:29.935 28693-28765/com.mycompany.app D/OkHttp: <-- HTTP FAILED: java.io.IOException: unexpected end of stream on Connection{localhost:59904, proxy=DIRECT hostAddress=localhost/127.0.0.1:59904 cipherSuite=none protocol=http/1.1}
01-02 09:31:29.935 28693-28779/com.mycompany.app I/MockWebServer: MockWebServer[59904] connection from localhost/127.0.0.1 failed: java.net.SocketException: Socket closed