Introduce ReactInstanceDelegateHostTest (#37281)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/37281

This is an small unit test to setup how we are going to be testing stable APIs in RN Android + kotlin.

The test itself doesn't do much and it will refactor as I iterate on ReactInstanceDelegate interface

changelog: [internal] internal

Reviewed By: luluwu2032

Differential Revision: D45551424

fbshipit-source-id: 2cf7b8eb1795e9d3f2eba611b9ee3ce28edf9ee0

packages/react-native/ReactAndroid/src/test/java/com/facebook/react/bridgeless/ReactInstanceDelegateTest.kt

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.bridgeless
+
+import com.facebook.react.ReactPackage
+import com.facebook.react.bridge.JSBundleLoader
+import com.facebook.react.common.annotations.UnstableReactNativeAPI
+import com.facebook.react.fabric.ReactNativeConfig
+import com.facebook.react.turbomodule.core.TurboModuleManagerDelegate
+import com.facebook.testutils.shadows.ShadowSoLoader
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+@RunWith(RobolectricTestRunner::class)
+@UnstableReactNativeAPI
+@Config(shadows = [ShadowSoLoader::class])
+class ReactInstanceDelegateTest {
+  @Test
+  fun testReactInstanceDelegateCreation() {
+    val jsBundleLoader: JSBundleLoader = Mockito.mock(JSBundleLoader::class.java)
+    val reactPackage: ReactPackage = Mockito.mock(ReactPackage::class.java)
+    val bindingsInstallerMock: BindingsInstaller = Mockito.mock(BindingsInstaller::class.java)
+    val turboModuleManagerDelegateMock: TurboModuleManagerDelegate =
+        Mockito.mock(TurboModuleManagerDelegate::class.java)
+    val jsEngineInstanceMock: JSEngineInstance = Mockito.mock(JSEngineInstance::class.java)
+    val reactNativeConfigMock: ReactNativeConfig = Mockito.mock(ReactNativeConfig::class.java)
+    val reactPackages = listOf(reactPackage)
+    val jsMainModulePathMocked = "mockedJSMainModulePath"
+    val delegate =
+        ReactInstanceDelegate.ReactInstanceDelegateBase(
+            jsMainModulePathMocked,
+            jsBundleLoader = jsBundleLoader,
+            reactPackages = reactPackages,
+            bindingsInstaller = bindingsInstallerMock,
+            jsEngineInstance = jsEngineInstanceMock,
+            reactNativeConfig = reactNativeConfigMock,
+            turboModuleManagerDelegate = turboModuleManagerDelegateMock,
+            exceptionHandler = {})
+
+    assertThat(delegate.jSMainModulePath).isEqualTo(jsMainModulePathMocked)
+  }
+}