android: fix MainActivityTest (#550)

-Permissions are shown after 'Get Started' screen, fix ordering in test
-Tap 'Authorize Tailscale'
-Re-add instrumentation test runner in build.gradle

Updates tailscale/corp#24242

Signed-off-by: kari-ts <kari@tailscale.com>

android/build.gradle

@@ -39,6 +39,7 @@ android {
         targetSdkVersion 34
         versionCode 242
         versionName getVersionProperty("VERSION_LONG")
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         // This setting, which defaults to 'true', will cause Tailscale to fall
         // back to the Google DNS servers if it cannot determine what the

android/src/androidTest/kotlin/com/tailscale/ipn/MainActivityTest.kt

@@ -17,6 +17,11 @@ import androidx.test.uiautomator.UiSelector
 import dev.turingcomplete.kotlinonetimepassword.HmacAlgorithm
 import dev.turingcomplete.kotlinonetimepassword.TimeBasedOneTimePasswordConfig
 import dev.turingcomplete.kotlinonetimepassword.TimeBasedOneTimePasswordGenerator
+import java.net.HttpURLConnection
+import java.net.URL
+import java.util.concurrent.TimeUnit
+import kotlin.time.Duration.Companion.minutes
+import kotlin.time.Duration.Companion.seconds
 import org.apache.commons.codec.binary.Base32
 import org.junit.After
 import org.junit.Assert
@@ -24,11 +29,6 @@ import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
-import java.net.HttpURLConnection
-import java.net.URL
-import java.util.concurrent.TimeUnit
-import kotlin.time.Duration.Companion.minutes
-import kotlin.time.Duration.Companion.seconds
 
 @RunWith(AndroidJUnit4::class)
 @LargeTest
@@ -59,18 +59,18 @@ class MainActivityTest {
             timeStep = 30,
             timeStepUnit = TimeUnit.SECONDS)
     val githubTOTP = TimeBasedOneTimePasswordGenerator(github2FASecret, config)
-
     val device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
-    Log.d(TAG, "Wait for VPN permission prompt and accept")
-    device.find(By.text("Connection request"))
-    device.find(By.text("OK")).click()
 
     Log.d(TAG, "Click through Get Started screen")
     device.find(By.text("Get Started"))
     device.find(By.text("Get Started")).click()
 
+    Log.d(TAG, "Wait for VPN permission prompt and accept")
+    device.find(By.text("Connection request"))
+    device.find(By.text("OK")).click()
+
     asNecessary(
-        timeout = 2.minutes,
+        2.minutes,
         {
           Log.d(TAG, "Log in")
           device.find(By.text("Log in")).click()
@@ -93,7 +93,6 @@ class MainActivityTest {
         },
         {
           Log.d(TAG, "Make sure GitHub page has loaded")
-          device.find(By.text("New to GitHub"))
           device.find(By.text("Username or email address"))
           device.find(By.text("Sign in"))
         },
@@ -115,10 +114,15 @@ class MainActivityTest {
               .setText(githubTOTP.generate())
           device.find(UiSelector().instance(0).className(Button::class.java)).click()
         },
+        {
+          Log.d(TAG, "Authorizing Tailscale")
+          device.find(By.text("Authorize tailscale")).click()
+        },
         {
           Log.d(TAG, "Accept Tailscale app")
           device.find(By.text("Learn more about OAuth"))
           // Sleep a little to give button time to activate
+
           Thread.sleep(5.seconds.inWholeMilliseconds)
           device.find(UiSelector().instance(1).className(Button::class.java)).click()
         },
@@ -126,8 +130,7 @@ class MainActivityTest {
           Log.d(TAG, "Connect device")
           device.find(By.text("Connect device"))
           device.find(UiSelector().instance(0).className(Button::class.java)).click()
-        },
-    )
+        })
 
     try {
       Log.d(TAG, "Accept Permission (Either Storage or Notifications)")

android/src/main/java/com/tailscale/ipn/App.kt

@@ -7,8 +7,10 @@ import android.app.Application
 import android.app.Notification
 import android.app.NotificationChannel
 import android.app.PendingIntent
+import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
+import android.content.IntentFilter
 import android.content.SharedPreferences
 import android.content.pm.PackageManager
 import android.net.ConnectivityManager
@@ -423,10 +425,27 @@ open class UninitializedApp : Application() {
     }
   }
 
-  // Calls stopVPN() followed by startVPN() to restart the VPN.
   fun restartVPN() {
+    // Register a receiver to listen for the completion of stopVPN
+    TSLog.d("KARI", "hi")
+    val stopReceiver =
+        object : BroadcastReceiver() {
+          override fun onReceive(context: Context?, intent: Intent?) {
+            // Ensure stop intent is complete
+            if (intent?.action == IPNService.ACTION_STOP_VPN) {
+              // Unregister receiver after receiving the broadcast
+              context?.unregisterReceiver(this)
+              // Now start the VPN
+              startVPN()
+            }
+          }
+        }
+
+    // Register the receiver before stopping VPN
+    val intentFilter = IntentFilter(IPNService.ACTION_STOP_VPN)
+    this.registerReceiver(stopReceiver, intentFilter)
+
     stopVPN()
-    startVPN()
   }
 
   fun createNotificationChannel(id: String, name: String, description: String, importance: Int) {