add js tests

packages/core/test/replay/CustomMask.test.ts

@@ -0,0 +1,58 @@
+import { describe, expect, it, beforeEach } from '@jest/globals';
+
+describe('CustomMask', () => {
+  beforeEach(() => {
+    jest.resetModules();
+  });
+
+  it('returns a fallback when native view manager is missing', () => {
+    jest.mock('react-native', () => ({
+      UIManager: {},
+      View: jest.fn(),
+    }));
+
+    const { Mask, Unmask } = require('../../src/js/replay/CustomMask');
+
+    expect(Mask).toBeDefined();
+    expect(Unmask).toBeDefined();
+  });
+
+  it('returns a fallback component when native view manager config is missing', () => {
+    jest.mock('react-native', () => ({
+      UIManager: {
+        hasViewManagerConfig: () => false,
+      },
+      View: jest.fn(),
+    }));
+
+    const { Mask, Unmask } = require('../../src/js/replay/CustomMask');
+
+    expect(Mask).toBeDefined();
+    expect(Unmask).toBeDefined();
+  });
+
+  it('returns native components when native components exist', () => {
+    const mockMaskComponent = jest.fn();
+    const mockUnmaskComponent = jest.fn();
+
+    jest.mock('../../src/js/RNSentryReplayMaskNativeComponent', () => ({
+      default: mockMaskComponent,
+    }));
+
+    jest.mock('../../src/js/RNSentryReplayUnmaskNativeComponent', () => ({
+      default: mockUnmaskComponent,
+    }));
+
+    jest.mock('react-native', () => ({
+      UIManager: {
+        hasViewManagerConfig: () => true,
+      },
+      View: jest.fn(),
+    }));
+
+    const { Mask, Unmask } = require('../../src/js/replay/CustomMask');
+
+    expect(Mask).toBe(mockMaskComponent);
+    expect(Unmask).toBe(mockUnmaskComponent);
+  });
+});

packages/core/test/replay/CustomMask.web.test.ts

@@ -0,0 +1,10 @@
+import { describe } from '@jest/globals';
+
+describe('CustomMask', () => {
+  it('returns a react native view', () => {
+    const { Mask, Unmask } = require('../../src/js/replay/CustomMask');
+
+    expect(Mask).toBeDefined();
+    expect(Unmask).toBeDefined();
+  });
+});