安卓系统:Roboe辛测试从Application.onCreate抛出错误

Question

当试图启动我的一个测试时，Robolectric抛出一个错误，说我的自定义Application Class中的一个变量没有初始化(kotlin.UninitializedPropertyAccessException: lateinit property workerList has not been initialized(。这可能是因为我的lateinit属性workerList稍后将使用dagger-hilt进行初始化

应用程序类

@HiltAndroidApp
@InternalCoroutinesApi
class App : Application(), Configuration.Provider {
@Inject lateinit var workerFactory: HiltWorkerFactory
@Inject lateinit var workerList: WorkerList // this causes the problem
override fun onCreate() {
super.onCreate()
plantTimberTree()
workerList.startDownloadDocumentWork() // this causes the problem
}
override fun getWorkManagerConfiguration(): Configuration =
Configuration.Builder().setWorkerFactory(workerFactory).build()
}

删除workerList.startDownloadDocumentWork()时，我的所有测试用例都能重新工作。如何在不删除workerList.startDownloadDocumentWork()的情况下解决问题？

Stacktrace

kotlin.UninitializedPropertyAccessException: lateinit property workerList has not been initialized
at com.example.app.App.onCreate(App.kt:21)
at org.robolectric.android.internal.AndroidTestEnvironment.lambda$installAndCreateApplication$0(AndroidTestEnvironment.java:288)
at org.robolectric.util.PerfStatsCollector.measure(PerfStatsCollector.java:75)
at org.robolectric.android.internal.AndroidTestEnvironment.installAndCreateApplication(AndroidTestEnvironment.java:288)
at org.robolectric.android.internal.AndroidTestEnvironment.setUpApplicationState(AndroidTestEnvironment.java:171)
at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:319)
at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:254)
at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Answer 1

如果使用Robolectric进行测试不需要这些行，则可以创建一个自定义应用程序类，并将其与Robolectic一起使用。

class TestApp : Application()

在测试中添加：@Config(application = TestApp::class)