From d7aebf5213ba17b57058673b1cae522e6d304659 Mon Sep 17 00:00:00 2001
From: Christoph Purrer <chpurrer@meta.com>
Date: Fri, 23 Oct 2026 17:27:11 -0700
Subject: [PATCH] Bridgeless-context MountingManagerTest (#59268)

Summary:

Replace the deprecated `BridgeReactContext` + mock `CatalystInstance` setup with `createTestReactApplicationContext` and add the `ShadowSoLoader` Robolectric shadow the bridgeless helper needs.

Changelog: [Internal]

Differential Revision: D126570689
---
 .../com/facebook/react/fabric/MountingManagerTest.kt  | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/fabric/MountingManagerTest.kt b/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/fabric/MountingManagerTest.kt
index 473e2eb4c0ba..0b023ad697d7 100644
--- a/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/fabric/MountingManagerTest.kt
+++ b/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/fabric/MountingManagerTest.kt
@@ -5,13 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-@file:Suppress("DEPRECATION")
-
 package com.facebook.react.fabric
 
 import com.facebook.react.ReactRootView
-import com.facebook.react.bridge.BridgeReactContext
-import com.facebook.react.bridge.ReactTestHelper.createMockCatalystInstance
+import com.facebook.react.bridge.ReactTestHelper.createTestReactApplicationContext
 import com.facebook.react.fabric.mounting.MountingManager
 import com.facebook.react.fabric.mounting.MountingManager.MountItemExecutor
 import com.facebook.react.internal.featureflags.ReactNativeFeatureFlagsForTests
@@ -19,15 +16,18 @@ import com.facebook.react.uimanager.ThemedReactContext
 import com.facebook.react.uimanager.ViewManager
 import com.facebook.react.uimanager.ViewManagerRegistry
 import com.facebook.react.views.view.ReactViewManager
+import com.facebook.testutils.shadows.ShadowSoLoader
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.robolectric.RobolectricTestRunner
 import org.robolectric.RuntimeEnvironment
+import org.robolectric.annotation.Config
 
 /** Tests [FabricUIManager] */
 @RunWith(RobolectricTestRunner::class)
+@Config(shadows = [ShadowSoLoader::class])
 class MountingManagerTest {
   private lateinit var mountingManager: MountingManager
   private lateinit var mountItemExecutor: MountItemExecutor
@@ -37,8 +37,7 @@ class MountingManagerTest {
   @Before
   fun setUp() {
     ReactNativeFeatureFlagsForTests.setUp()
-    val reactContext = BridgeReactContext(RuntimeEnvironment.getApplication())
-    reactContext.initializeWithInstance(createMockCatalystInstance())
+    val reactContext = createTestReactApplicationContext(RuntimeEnvironment.getApplication())
     themedReactContext = ThemedReactContext(reactContext, reactContext, null, -1)
     val viewManagers = listOf<ViewManager<*, *>>(ReactViewManager())
     mountItemExecutor = MountItemExecutor {