我正在调查我的Android应用程序中的协程测试,并遵循此代码实验室Advanced Android in Kotlin 05.3: Testing Coroutines and Jetpack integrations
此代码实验室包含以下代码片段
@ExperimentalCoroutinesApi
val testDispatcher: TestCoroutineDispatcher = TestCoroutineDispatcher()
@ExperimentalCoroutinesApi
@Before
fun setupDispatcher() {
Dispatchers.setMain(testDispatcher)
}
@ExperimentalCoroutinesApi
@After
fun tearDownDispatcher() {
Dispatchers.resetMain()
testDispatcher.cleanupTestCoroutines()
}
但是,TestCoroutineDispatcher标记为已弃用,并带有以下注解:-
/**
* [CoroutineDispatcher] that performs both immediate and lazy execution of coroutines in tests
* and uses a [TestCoroutineScheduler] to control its virtual clock.
*
* By default, [TestCoroutineDispatcher] is immediate. That means any tasks scheduled to be run without delay are
* immediately executed. If they were scheduled with a delay, the virtual clock-time must be advanced via one of the
* methods on the dispatcher's [scheduler].
*
* When switched to lazy execution using [pauseDispatcher] any coroutines started via [launch] or [async] will
* not execute until a call to [DelayController.runCurrent] or the virtual clock-time has been advanced via one of the
* methods on [DelayController].
*
* @see DelayController
*/
@Deprecated("The execution order of `TestCoroutineDispatcher` can be confusing, and the mechanism of " +
"pausing is typically misunderstood. Please use `StandardTestDispatcher` or `UnconfinedTestDispatcher` instead.",
level = DeprecationLevel.WARNING)
// Since 1.6.0, ERROR in 1.7.0 and removed as experimental in 1.8.0
public class TestCoroutineDispatcher(public override val scheduler: TestCoroutineScheduler = TestCoroutineScheduler()):
TestDispatcher(), Delay, SchedulerAsDelayController
{...}
我不清楚应该如何使用建议的TestCoroutineDispatcher()
替代方法。StandardTestDispatcher
和UnconfinedTestDispatcher
是否直接替代TestCoroutineDispatcher()?
我错过了什么?
2条答案
按热度按时间m1m5dgzv1#
似乎可以使用更优雅的解决方案,如
runTest()
,因为1.6.0
取自此销售订单answer
有关如何使用该模块的详细信息,请参见documentation。
dzhpxtsq2#
Ide建议使用
StandardTestDispatcher()
,但是,它的行为不像TestCoroutineDispatcher()
,因为StandardTestDispatcher()
不会立即进入launch{}
或async{}
。因此,最好使用UnconfinedTestDispatcher()
。我建议你查看android studio中的快速文档来了解这个想法。