LocalCalendarTest sometimes fails with FileNotFoundException

[rfc2822]

Tests sometimes fail with:

Time: 20.003
> Task :app:virtualOseDebugAndroidTest
There was 1 failure:
1) at.bitfire.davdroid.resource.LocalCalendarTest
java.io.FileNotFoundException
	at at.bitfire.ical4android.AndroidCalendar$Companion.findByID(AndroidCalendar.kt:136)
	at at.bitfire.davdroid.InitCalendarProviderRule.initCalendarProvider(InitCalendarProviderRule.kt:75)
	at at.bitfire.davdroid.InitCalendarProviderRule.before(InitCalendarProviderRule.kt:66)
	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:50)
	at androidx.test.rule.GrantPermissionRule$RequestPermissionStatement.evaluate(GrantPermissionRule.java:150)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
	at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:68)
	at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
	at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:463)
	at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2402)

FAILURES!!!
Tests run: 133,  Failures: 1


Logcat of last crash: 
Process: at.bitfire.davdroid.test, PID: 2014
java.lang.NoClassDefFoundError: Failed resolution of: Lkotlin/jvm/functions/Function0;
	at java.lang.Class.newInstance(Native Method)
	at android.app.AppComponentFactory.instantiateService(AppComponentFactory.java:129)
	at android.app.ActivityThread.handleCreateService(ActivityThread.java:4626)
	at android.app.ActivityThread.-$$Nest$mhandleCreateService(Unknown Source:0)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2264)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:205)
	at android.os.Looper.loop(Looper.java:294)
	at android.app.ActivityThread.main(ActivityThread.java:8177)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)
Caused by: java.lang.ClassNotFoundException: Didn't find class "kotlin.jvm.functions.Function0" on path: DexPathList[[zip file "/data/app/~~JU8okUQBWELkBM--8lsCoA==/at.bitfire.davdroid.test-ANMhccf5FVg9E6TbNUQ7LQ==/base.apk"],nativeLibraryDirectories=[/data/app/~~JU8okUQBWELkBM--8lsCoA==/at.bitfire.davdroid.test-ANMhccf5FVg9E6TbNUQ7LQ==/lib/x86_64, /data/app/~~JU8okUQBWELkBM--8lsCoA==/at.bitfire.davdroid.test-ANMhccf5FVg9E6TbNUQ7LQ==/base.apk!/lib/x86_64, /system/lib64, /system_ext/lib64]]
	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:259)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
	... 12 more

They usually work when trying again.

[sunkup]

Might have to do with PR #957 . Don't know why really, but that's the last time we changed something in InitCalendarProviderRule and LocalCalendar.

Or maybe ical4android commit 86af14d. Probably not.

[rfc2822]

It's really annoying, almost in every PR now…

[rfc2822]

May be worked around by #1007 – re-open if the problem persists