使用CountingIdlingResource进行异步操作时，检测测试失败
使用CountingIdlingResource进行异步操作时，检测测试失败
提问于 2018-06-09 01:52:37
在我的指令插入测试中，testZoomControls总是在CountingIdlingResource递减并导致map has not been initialized异常之前执行。
这怎么可能呢？
MapViewUiControlsTest.kt
@RunWith(AndroidJUnit4::class)
class MapViewUiControlsTest {
private lateinit var mapView: MapView
private lateinit var map: Map
@Rule
@JvmField
val activityRule: ActivityTestRule<MapViewTestActivity> = ActivityTestRule(
MapViewTestActivity::class.java
)
@Rule
@JvmField
val grantPermissionRule: GrantPermissionRule =
GrantPermissionRule.grant(android.Manifest.permission.ACCESS_FINE_LOCATION)
private lateinit var idlingResource: CountingIdlingResource
@Before
@UiThreadTest
fun init() {
MockitoAnnotations.initMocks(this)
idlingResource = activityRule.activity.idlingResource
idlingResource.registerIdleTransitionCallback({
map = activityRule.activity.map
mapView = activityRule.activity.mapView
})
IdlingRegistry.getInstance().register(idlingResource)
activityRule.activity.init()
}
@After
@UiThreadTest
fun cleanup() {
IdlingRegistry.getInstance().unregister(idlingResource)
}
@Test
@UiThreadTest
fun testZoomControls() {
map.getMapOptions().zoomControlsEnabled = true
Assert.assertEquals(View.VISIBLE, mapView.zoomControlsView.visibility)
}
}MapViewTestActivity.kt
val idlingResource = CountingIdlingResource("dummy_resource", true)
fun init() {
idlingResource.increment()
mapView.getMapAsync(onMapReadyCallback = object : OnMapReadyCallback {
override fun onMapReady(map: Map) {
this@MapViewTestActivity.map = map
idlingResource.decrement()
}
})
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-09 04:39:59
您需要Espresso.onView(..).check(..)或类似的代码才能使此IdlingResource发挥作用。在这种情况下，Espresso将等待所有IdlingRsources空闲，然后继续下一行代码：
@Test
@UiThreadTest
fun testZoomControls() {
//this will wait until your IdlingResource is idle
Espresso.onView(<your map view matcher>).check(matches(isDisplayed()));
map.getMapOptions().zoomControlsEnabled = true
Assert.assertEquals(View.VISIBLE, mapView.zoomControlsView.visibility)
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50766058
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