test: cover nativeModules fallback when the native side is missing

Author: AhmedAlAmawi

__tests__/nativeModules.test.ts

@@ -0,0 +1,45 @@
+/**
+ * Tests that importing the native module bindings does not throw when the
+ * native side is unavailable (Expo Go, Jest, web bundles, prebuilds before
+ * pods are installed).
+ */
+
+describe('nativeModules', () => {
+  afterEach(() => {
+    jest.resetModules();
+    jest.dontMock('react-native');
+  });
+
+  test('falls back to empty objects when native modules are missing', () => {
+    jest.doMock('react-native', () => ({
+      NativeModules: {},
+      TurboModuleRegistry: { get: () => null },
+    }));
+
+    let modules: typeof import('../src/nativeModules') | undefined;
+    expect(() => {
+      modules = require('../src/nativeModules');
+    }).not.toThrow();
+
+    expect(modules?.IntercomModule).toEqual({});
+    expect(modules?.IntercomEventEmitter).toEqual({});
+  });
+
+  test('uses the registered native modules when they are available', () => {
+    const intercomModule = { initialize: jest.fn() };
+    const intercomEventEmitter = { UNREAD_COUNT_CHANGE_NOTIFICATION: 'event' };
+
+    jest.doMock('react-native', () => ({
+      NativeModules: {
+        IntercomModule: intercomModule,
+        IntercomEventEmitter: intercomEventEmitter,
+      },
+      TurboModuleRegistry: { get: () => null },
+    }));
+
+    const modules = require('../src/nativeModules');
+
+    expect(modules.IntercomModule).toBe(intercomModule);
+    expect(modules.IntercomEventEmitter).toBe(intercomEventEmitter);
+  });
+});