[EMT-2503] Add async implementation build to run through test suite for release

app/build.gradle.kts

@@ -83,9 +83,9 @@ dependencies {
     implementation ("com.android.support.constraint:constraint-layout:1.1.3")
 
 
-    //implementation("io.branch.sdk.android:library:5.18.1")
+    implementation("io.branch.sdk.android:library:5.20.3")
     // This branch assumes CI will place aar here
-    implementation(files("libs/branch-sdk-debug.aar"))
+    //implementation(files("libs/branch-sdk-debug.aar"))
 
 
     implementation("com.google.android.gms:play-services-ads-identifier:18.0.1")

app/src/androidTest/java/io/branch/branchlinksimulator/BranchBackgroundInitTest.kt

@@ -0,0 +1,39 @@
+package io.branch.branchlinksimulator
+
+import android.content.Context
+import androidx.test.core.app.ApplicationProvider
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import io.branch.referral.Branch
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.junit.Test
+import org.junit.runner.RunWith
+
+val branchInitializationSignal = CompletableDeferred<Unit>()
+private val applicationJob = SupervisorJob()
+val applicationScope = CoroutineScope(Dispatchers.Main + applicationJob)
+val exampleBranchKey = "key_live_hshD4wiPK2sSxfkZqkH30ggmyBfmGmD7"
+
+@RunWith(AndroidJUnit4::class)
+class BranchBackgroundInitTest {
+
+    private val appContext: Context = ApplicationProvider.getApplicationContext()
+    @Test
+    fun branchGetInstanceTest() {
+        suspend fun backgroundGetBranchAutoInstanceTest(context: Context, branchKey: String) {
+            withContext(Dispatchers.IO) {
+                Branch.getAutoInstance(context, branchKey)
+            }
+            branchInitializationSignal.complete(Unit)
+        }
+
+        applicationScope.launch {
+            backgroundGetBranchAutoInstanceTest(appContext, exampleBranchKey)
+        }
+    }
+
+}

app/src/main/java/io/branch/branchlinksimulator/BranchLinkSimulatorApplication.kt

@@ -2,14 +2,26 @@ package io.branch.branchlinksimulator
 
 import android.app.Application
 import android.content.Context
+import android.util.Log
 import io.branch.referral.Branch
+import kotlinx.coroutines.CompletableDeferred
 import java.util.UUID
 
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
 class BranchLinkSimulatorApplication: Application() {
     lateinit var currentConfig: ApiConfiguration
     lateinit var roundTripStore: RoundTripStore
         private set
 
+    private val applicationJob = SupervisorJob()
+    val applicationScope = CoroutineScope(Dispatchers.Main + applicationJob)
+    val branchInitializationSignal = CompletableDeferred<Unit>()
+
     override fun onCreate() {
         super.onCreate()
 
@@ -20,8 +32,6 @@ class BranchLinkSimulatorApplication: Application() {
 
         roundTripStore = RoundTripStore(this)
         Branch.enableLogging(roundTripStore)
-        // Branch object initialization
-        Branch.getAutoInstance(this, currentConfig.branchKey)
 
         // Retrieve or create the bls_session_id
         val sharedPreferences = getSharedPreferences("branch_session_prefs", Context.MODE_PRIVATE)
@@ -30,8 +40,26 @@ class BranchLinkSimulatorApplication: Application() {
             sharedPreferences.edit().putString("bls_session_id", newId).apply()
             newId
         }
+        applicationScope.launch {
+            // Coroutine used to move creating the Branch singleton through Branch.getAutoInstance() to background thread
+            setupBranchInstance(this@BranchLinkSimulatorApplication, currentConfig.branchKey)
+            withContext(Dispatchers.Main) {
+                // Set the bls_session_id in Branch request metadata
+                Branch.getInstance().setRequestMetadata("bls_session_id", blsSessionId)
+            }
+        }
+    }
 
-        // Set the bls_session_id in Branch request metadata
-        Branch.getInstance().setRequestMetadata("bls_session_id", blsSessionId)
+    override fun onTerminate() {
+        super.onTerminate()
+        applicationJob.cancel()
+    }
+
+    suspend fun setupBranchInstance(context: Context, branchKey: String) {
+        withContext(Dispatchers.IO) {
+            // Branch object initialization
+            Branch.getAutoInstance(context, branchKey)
+        }
+        branchInitializationSignal.complete(Unit)
     }
 }

app/src/main/java/io/branch/branchlinksimulator/MainActivity.kt

@@ -120,6 +120,8 @@ class MainActivity : ComponentActivity() {
         }
 
         lifecycleScope.launch {
+            val app = application as BranchLinkSimulatorApplication
+            app.branchInitializationSignal.await()
             val initErrorMessage = initializeBranch()
             initErrorMessageState.value = initErrorMessage
         }