ExceptionInInitializerError: Exception java.lang.NoSuchFieldError: mFlags [in thread "Test worker"] with 14-robolectric-10818077

[johnjohndoe]

Context

• I am using the unmock-plugin in my Android application project. I noticed that newer version of org.robolectric:android-all are available. Hence, I tried to upgrade.
• I noticed that the README of the unmock-plugin still references org.robolectric:android-all:4.3_r2-robolectric-0 (Oct 17, 2013) although newer versions are discussed in a few issues.

Current state

• I am using umock-plugin 0.8.0 and robolectric 4.3_r2-robolectric-0.

• I am using the following rules:

  keepStartingWith "libcore."
  keepStartingWith "org.ccil.cowan.tagsoup."
  keep "android.content.ComponentName"
  keep "android.content.ContentValues"
  keep "android.content.Intent"
  keep "android.net.Uri"
  keepStartingWith "android.text."
  keep "android.os.Bundle"
  keep "android.util.Patterns"
  keep "com.android.internal.util.ArrayUtils"
  keepAndRename "java.nio.charset.Charsets" to "xjava.nio.charset.Charsets"

Target state

• I am using umock-plugin 0.8.0 and robolectric 14-robolectric-10818077 (Oct 06, 2023).

• I am using the following rules having added a few to resolve errors:

  keepStartingWith "libcore."
  keepStartingWith "org.ccil.cowan.tagsoup."
  keep "android.content.ComponentName"
  keep "android.content.ContentValues"
  keep "android.content.Intent"
  keep "android.net.Uri"
  keep "android.net.UriCodec"
  keepStartingWith "android.text."
  keep "android.os.BadTypeParcelableException"
  keep "android.os.Bundle"
  keep "android.util.ArrayMap"
  keep "android.util.ContainerHelpers"
  keep "android.util.MapCollections"
  keep "android.util.Patterns"
  keep "com.android.internal.util.ArrayUtils"
  keep "com.android.internal.util.Preconditions"
  keepAndRename "java.nio.charset.Charsets" to "xjava.nio.charset.Charsets"

Test failures

Running the unit tests in the project via ./gradlew testDebugUnitTest :engelsystem:test testCcc37c3DebugUnitTest results in test failures, e.g.:

java.lang.NoClassDefFoundError: Could not initialize class android.os.Bundle
    at androidx.core.os.BundleKt.bundleOf(Bundle.kt:34)
    at nerd.tuxmobil.fahrplan.congress.extensions.IntentExtensionsKt.withExtras(IntentExtensions.kt:12)
    ...

    Caused by:
    java.lang.ExceptionInInitializerError: Exception java.lang.NoSuchFieldError: mFlags [in thread "Test worker"]
        at android.os.Bundle.<init>(Bundle.java:77)
        at android.os.Bundle.<clinit>(Bundle.java:65)
        at androidx.core.os.BundleKt.bundleOf(Bundle.kt:34)
        at nerd.tuxmobil.fahrplan.congress.extensions.IntentExtensionsKt.withExtras(IntentExtensions.kt:12)
        ...

See: IntentExtensionsKt.withExtras -> androidx.core.os.bundleOf

Related

• https://github.com/bjoernQ/unmock-plugin/issues/37
• https://github.com/bjoernQ/unmock-plugin/issues/67