larryng/allure-kotlin-android-11.md

## allure-kotlin-android-11.md

      
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              allure-kotlin-android-11.md
            
          
    re: android/android-test#743 (comment)
The workaround is to write to the app external cache instead:
/**
 * Basically [AllureAndroidJUnitRunner] except:
 *  - [Allure.lifecycle] is set to [BniAllureLifecycle]
 *  - without [ExternalStoragePermissionsListener] which doesn't work on Android 11
 */
open class AndroidTestRunner : AndroidJUnitRunner() {

    override fun onCreate(arguments: Bundle) {
        Allure.lifecycle = BniAllureLifecycle
        val listenerArg = listOfNotNull(
            arguments.getCharSequence("listener"),
            AllureJunit4::class.java.name
        ).joinToString(separator = ",")
        arguments.putCharSequence("listener", listenerArg)
        super.onCreate(arguments)
    }
    // ...
}

/**
 * Custom [AllureLifecycle] that writes Allure files to app external cache to work around new
 * scoped storage limitations introduced in Android 11.
 */
object BniAllureLifecycle : AllureLifecycle(writer = BniAllureResultsWriter)

private object BniAllureResultsWriter : AllureResultsWriter {

    private var cachedContext: Context? = null
    private var cachedDelegate: AllureResultsWriter? = null

    private val delegate: AllureResultsWriter
        get() {
            val context = targetContext()
            return cachedDelegate
                ?.takeIf { context == cachedContext }
                ?: FileSystemResultsWriter(context.externalCacheDir!!.resolve("allure-results"))
                    .also {
                        cachedContext = context
                        cachedDelegate = it
                    }
        }

    override fun write(testResult: TestResult) {
        delegate.write(testResult)
    }

    override fun write(testResultContainer: TestResultContainer) {
        delegate.write(testResultContainer)
    }

    override fun write(source: String, attachment: InputStream) {
        delegate.write(source, attachment)
    }
}
Run with the custom AndroidTestRunner then afterwards pull results from $(adb shell echo \$EXTERNAL_STORAGE)/Android/data/YOUR_PACKAGE/cache/allure-results.