feat: e2e tests for google sign in

Author: demolaf

auth/src/main/java/com/firebase/ui/auth/compose/FirebaseAuthUI.kt

@@ -16,8 +16,9 @@ package com.firebase.ui.auth.compose
 
 import android.content.Context
 import androidx.annotation.RestrictTo
-import com.firebase.ui.auth.compose.configuration.auth_provider.signOutFromGoogle
 import com.firebase.ui.auth.compose.configuration.AuthUIConfiguration
+import com.firebase.ui.auth.compose.configuration.auth_provider.AuthProvider
+import com.firebase.ui.auth.compose.configuration.auth_provider.signOutFromGoogle
 import com.google.firebase.FirebaseApp
 import com.google.firebase.auth.FirebaseAuth
 import com.google.firebase.auth.FirebaseAuth.AuthStateListener
@@ -72,6 +73,9 @@ class FirebaseAuthUI private constructor(
 
     private val _authStateFlow = MutableStateFlow<AuthState>(AuthState.Idle)
 
+    @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
+    var testCredentialManagerProvider: AuthProvider.Google.CredentialManagerProvider? = null
+
     /**
      * Checks whether a user is currently signed in.
      *

auth/src/main/java/com/firebase/ui/auth/compose/configuration/auth_provider/AuthProvider.kt

@@ -18,6 +18,7 @@ import android.app.Activity
 import android.content.Context
 import android.net.Uri
 import android.util.Log
+import androidx.annotation.RestrictTo
 import androidx.compose.ui.graphics.Color
 import androidx.core.net.toUri
 import androidx.credentials.CredentialManager
@@ -536,7 +537,8 @@ abstract class AuthProvider(open val providerId: String, open val providerName:
          * Result container for Google Sign-In credential flow.
          * @suppress
          */
-        internal data class GoogleSignInResult(
+        @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
+        data class GoogleSignInResult(
             val credential: AuthCredential,
             val displayName: String?,
             val photoUrl: Uri?
@@ -570,9 +572,11 @@ abstract class AuthProvider(open val providerId: String, open val providerName:
          * An interface to wrap the Credential Manager flow for Google Sign-In.
          * @suppress
          */
-        internal interface CredentialManagerProvider {
+        @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
+        interface CredentialManagerProvider {
             suspend fun getGoogleCredential(
                 context: Context,
+                credentialManager: CredentialManager,
                 serverClientId: String,
                 filterByAuthorizedAccounts: Boolean,
                 autoSelectEnabled: Boolean
@@ -583,14 +587,15 @@ abstract class AuthProvider(open val providerId: String, open val providerName:
          * The default implementation of [CredentialManagerProvider].
          * @suppress
          */
-        internal class DefaultCredentialManagerProvider : CredentialManagerProvider {
+        @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
+        class DefaultCredentialManagerProvider : CredentialManagerProvider {
             override suspend fun getGoogleCredential(
                 context: Context,
+                credentialManager: CredentialManager,
                 serverClientId: String,
                 filterByAuthorizedAccounts: Boolean,
-                autoSelectEnabled: Boolean
+                autoSelectEnabled: Boolean,
             ): GoogleSignInResult {
-                val credentialManager = CredentialManager.create(context)
                 val googleIdOption = GetGoogleIdOption.Builder()
                     .setServerClientId(serverClientId)
                     .setFilterByAuthorizedAccounts(filterByAuthorizedAccounts)

auth/src/main/java/com/firebase/ui/auth/compose/configuration/auth_provider/GoogleAuthProvider+FirebaseAuthUI.kt

@@ -130,12 +130,14 @@ internal suspend fun FirebaseAuthUI.signInWithGoogle(
             }
         }
 
-        val result = credentialManagerProvider.getGoogleCredential(
-            context = context,
-            serverClientId = provider.serverClientId!!,
-            filterByAuthorizedAccounts = true,
-            autoSelectEnabled = false
-        )
+        val result =
+            (testCredentialManagerProvider ?: credentialManagerProvider).getGoogleCredential(
+                context = context,
+                credentialManager = CredentialManager.create(context),
+                serverClientId = provider.serverClientId!!,
+                filterByAuthorizedAccounts = true,
+                autoSelectEnabled = false
+            )
 
         signInAndLinkWithCredential(
             config = config,

composeapp/src/main/java/com/firebase/composeapp/MainActivity.kt

@@ -31,7 +31,7 @@ import com.google.firebase.FirebaseApp
  */
 class MainActivity : ComponentActivity() {
     companion object {
-        private const val USE_AUTH_EMULATOR = false
+        private const val USE_AUTH_EMULATOR = true
         private const val AUTH_EMULATOR_HOST = "10.0.2.2"
         private const val AUTH_EMULATOR_PORT = 9099
     }

e2eTest/build.gradle.kts

@@ -56,6 +56,7 @@ dependencies {
     testImplementation(Config.Libs.Test.mockitoInline)
     testImplementation(Config.Libs.Test.mockitoKotlin)
     testImplementation(Config.Libs.Androidx.credentials)
+    testImplementation(Config.Libs.Misc.googleid)
     testImplementation(Config.Libs.Test.composeUiTestJunit4)
 }