我正在嘗試對一個方法進行單元測驗，該方法是我的 Android 應用程式用例層的一部分。該方法接收 XML RSS 提要并將其作為 GSON 決議的物件回傳給視圖模型。測驗類用 注釋@RunWith(RobolectricTestRunner::class)。
測驗失敗是因為在用例類的這個方法中java.lang.ExceptionInInitializerError拋出了一個（除其他外） ：.fromHtml()
private fun convertHtml(rawString: String): String {
return HtmlCompat
.fromHtml(rawString, HtmlCompat.FROM_HTML_MODE_COMPACT)
.toString()
.replace("?", "")
.trim()
}
在閱讀堆疊跟蹤時，這似乎是 Robolectric 嘗試初始化靜態方法或類的問題？我這樣說是因為堆疊跟蹤中的某些行，例如：
at org.robolectric.internal.bytecode.RobolectricInternals.performStaticInitialization(RobolectricInternals.java:61)
at org.robolectric.internal.bytecode.ShadowWrangler.classInitializing(ShadowWrangler.java:178)
不幸的是，我所有的研究都無濟于事。我似乎找不到與此問題相關的任何內容。我已經看到幾個執行緒談論一起使用 Robolectric 和 PowerMock 來測驗靜態類，雖然我不確定這是否是一種相關的方法，并且我想盡可能避免添加更多的測驗框架。為什么會引發此例外，如何解決此例外？
作為參考，這里是整個堆疊跟蹤：
java.lang.ExceptionInInitializerError
at android.text.SpannableStringBuilder.__constructor__(SpannableStringBuilder.java:61)
at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java)
at android.text.HtmlToSpannedConverter.__constructor__(Html.java:425)
at android.text.HtmlToSpannedConverter.<init>(Html.java)
at android.text.Html.fromHtml(Html.java:135)
at android.text.Html.fromHtml(Html.java:101)
at androidx.core.text.HtmlCompat.fromHtml(HtmlCompat.java:150)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.convertHtml(GetNewsHeadlinesUseCase.kt:162)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.convertXmlToJson(GetNewsHeadlinesUseCase.kt:80)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.execute(GetNewsHeadlinesUseCase.kt:35)
at com.domg.testrss.GetNewsHeadlinesUseCaseTest$parsing success$1.invokeSuspend(GetNewsHeadlinesUseCaseTest.kt:33)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:279)
at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
at com.domg.testrss.GetNewsHeadlinesUseCaseTest.parsing success(GetNewsHeadlinesUseCaseTest.kt:32)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:570)
at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:278)
at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.robolectric.internal.bytecode.ShadowWrangler.classInitializing(ShadowWrangler.java:181)
at org.robolectric.internal.bytecode.RobolectricInternals.classInitializing(RobolectricInternals.java:21)
at android.text.TextUtils.<clinit>(TextUtils.java)
at android.text.SpannableStringBuilder.$$robo$$android_text_SpannableStringBuilder$__constructor__(SpannableStringBuilder.java:61)
at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java)
at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java)
at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java)
at android.text.HtmlToSpannedConverter.$$robo$$android_text_HtmlToSpannedConverter$__constructor__(Html.java:425)
at android.text.HtmlToSpannedConverter.<init>(Html.java)
at android.text.Html.$$robo$$android_text_Html$fromHtml(Html.java:135)
at android.text.Html.fromHtml(Html.java)
at android.text.Html.$$robo$$android_text_Html$fromHtml(Html.java:101)
at android.text.Html.fromHtml(Html.java)
at androidx.core.text.HtmlCompat.fromHtml(HtmlCompat.java:150)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.convertHtml(GetNewsHeadlinesUseCase.kt:162)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.convertXmlToJson(GetNewsHeadlinesUseCase.kt:80)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.execute(GetNewsHeadlinesUseCase.kt:35)
at com.domg.testrss.GetNewsHeadlinesUseCaseTest$parsing success$1.invokeSuspend(GetNewsHeadlinesUseCaseTest.kt:33)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:279)
at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
at com.domg.testrss.GetNewsHeadlinesUseCaseTest.parsing success(GetNewsHeadlinesUseCaseTest.kt:32)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
... 13 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.robolectric.internal.bytecode.RobolectricInternals.performStaticInitialization(RobolectricInternals.java:61)
at org.robolectric.internal.bytecode.ShadowWrangler.classInitializing(ShadowWrangler.java:178)
... 43 more
Caused by: java.lang.NullPointerException
at org.robolectric.shadows.ShadowLegacyAssetManager.getAndResolve(ShadowLegacyAssetManager.java:1019)
at org.robolectric.shadows.ShadowLegacyAssetManager.getResourceText(ShadowLegacyAssetManager.java:285)
at android.content.res.AssetManager.getResourceText(AssetManager.java)
at android.content.res.Resources.getText(Resources.java:225)
at android.content.res.Resources.getString(Resources.java:313)
at android.text.TextUtils.__staticInitializer__(TextUtils.java:1704)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.robolectric.internal.bytecode.RobolectricInternals.performStaticInitialization(RobolectricInternals.java:61)
at org.robolectric.internal.bytecode.ShadowWrangler.classInitializing(ShadowWrangler.java:178)
at org.robolectric.internal.bytecode.RobolectricInternals.classInitializing(RobolectricInternals.java:21)
at android.text.TextUtils.<clinit>(TextUtils.java)
at android.text.SpannableStringBuilder.__constructor__(SpannableStringBuilder.java:61)
at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java)
at android.text.HtmlToSpannedConverter.__constructor__(Html.java:425)
at android.text.HtmlToSpannedConverter.<init>(Html.java)
at android.text.Html.fromHtml(Html.java:135)
at android.text.Html.fromHtml(Html.java:101)
at androidx.core.text.HtmlCompat.fromHtml(HtmlCompat.java:150)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.convertHtml(GetNewsHeadlinesUseCase.kt:162)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.convertXmlToJson(GetNewsHeadlinesUseCase.kt:80)
at com.domg.testrss.domain.usecase.GetNewsHeadlinesUseCase.execute(GetNewsHeadlinesUseCase.kt:35)
at com.domg.testrss.GetNewsHeadlinesUseCaseTest$parsing success$1.invokeSuspend(GetNewsHeadlinesUseCaseTest.kt:33)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:279)
at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
at com.domg.testrss.GetNewsHeadlinesUseCaseTest.parsing success(GetNewsHeadlinesUseCaseTest.kt:32)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
... 13 more
uj5u.com熱心網友回復：
我發現了一個解決方案。將以下內容添加到模塊android的部分： build.gradle
testOptions {
unitTests {
includeAndroidResources = true
}
}
根據檔案，將此設定為 true 將允許單元測驗通過“在運行單元測驗之前執行資源、資產和清單合并”來“使用 Android 資源、資產和清單”。
如上所述添加此內容后，例外停止并且我的單元測驗呼叫HtmlCompat能夠完成。
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