问如何在长时间运行期间启动检查(从网络加载数据)

EN

@RunWith(AndroidJUnit4::class)
class AddTraderActivityTest {
@get:Rule
    var addTraderIntentTestRule: IntentsTestRule<AddTraderActivity> = IntentsTestRule(AddTraderActivity::class.java)

    @Before
    fun setup() {
        mockServer = MockWebServer()
        mockServer.start(8081)
        Debug.d(TAG, "SUCCCESS_START_MOCKWEBSRVER")
    }

  @Test
fun buttonStart_click_longResponse() {
    // stub response
    mockServer.enqueue(MockResponse()
            .setResponseCode(200)
            .setBody(FileUtil.getStringFromFile(context, "add_trader_success_200.json"))
            .setBodyDelay(5000, TimeUnit.MILLISECONDS))

    onView(withId(R.id.baseTextInputEditText))
            .perform(typeText(BASE_TEST))
    onView(withId(R.id.quoteTextInputEditText))
            .perform(typeText(QUOTE_TEST))
    onView(withId(R.id.startButton))
            .perform(click())
    onView(withText(R.id.containerProgressBarLayout))
            .check(matches(isDisplayed()))
}