feat: created RetryFlakyTestUntilSuccessRule class

Author: Aitorbp

owncloudApp/src/androidTest/java/com/owncloud/android/files/details/FileDetailsFragmentTest.kt

@@ -20,6 +20,7 @@ import com.owncloud.android.testutil.OC_FILE_WITH_SYNC_INFO_AND_SPACE
 import com.owncloud.android.testutil.OC_FILE_WITH_SYNC_INFO_AND_WITHOUT_PERSONAL_SPACE
 import com.owncloud.android.testutil.OC_FILE_WITH_SYNC_INFO_AVAILABLE_OFFLINE
 import com.owncloud.android.utils.DisplayUtils
+import com.owncloud.android.utils.RetryFlakyTestUntilSuccessRule
 import com.owncloud.android.utils.matchers.assertVisibility
 import com.owncloud.android.utils.matchers.isDisplayed
 import com.owncloud.android.utils.matchers.withDrawable
@@ -29,6 +30,7 @@ import io.mockk.mockk
 import kotlinx.coroutines.flow.MutableStateFlow
 import org.junit.Before
 import org.junit.Ignore
+import org.junit.Rule
 import org.junit.Test
 import org.koin.androidx.viewmodel.dsl.viewModel
 import org.koin.core.context.startKoin
@@ -47,6 +49,10 @@ class FileDetailsFragmentTest {
     private var currentFileSyncInfo: MutableStateFlow<OCFileWithSyncInfo?> = MutableStateFlow(OC_FILE_WITH_SYNC_INFO)
     private var currentFileAvailableOffline: MutableStateFlow<OCFileWithSyncInfo?> = MutableStateFlow(OC_FILE_WITH_SYNC_INFO_AVAILABLE_OFFLINE)
 
+    @Rule
+    @JvmField
+    val retryFlakyTestUntilSuccessRule = RetryFlakyTestUntilSuccessRule()
+
     @Before
     fun setUp() {
         context = ApplicationProvider.getApplicationContext()

owncloudApp/src/androidTest/java/com/owncloud/android/utils/RetryFlakyTestUnilSuccessRule.kt

@@ -0,0 +1,37 @@
+package com.owncloud.android.utils
+
+import android.util.Log
+import org.junit.rules.TestRule
+import org.junit.runner.Description
+import org.junit.runners.model.Statement
+
+class RetryFlakyTestUntilSuccessRule(val count: Int = 3) : TestRule {
+
+    companion object {
+        private const val TAG = "RetryFlakyTestUntilSuccessRule"
+    }
+
+    override fun apply(base: Statement, description: Description): Statement = statement(base, description)
+
+    private fun statement(base: Statement, description: Description): Statement {
+        return object : Statement() {
+            @Throws(Throwable::class)
+            override fun evaluate() {
+                var throwable: Throwable? = null
+                val displayName = description.displayName
+                for (i in 1 until count + 1) {
+                    try {
+                        Log.i(TAG, "$displayName: Run $i")
+                        base.evaluate()
+                        return
+                    } catch (t: Throwable) {
+                        throwable = t
+                        Log.e(TAG, "$displayName: Run $i failed.")
+                    }
+                }
+                Log.e(TAG, "$displayName: Giving up after run $count failures.")
+                throw throwable!!
+            }
+        }
+    }
+}