From c4b749b837fc9c43951b6f24db43413027e824be Mon Sep 17 00:00:00 2001
From: Bryce Kalow <bryce@clerk.dev>
Date: Tue, 22 Aug 2023 17:38:44 -0500
Subject: [PATCH] feat(clerk-js): Add tests and the mockNativeRuntime helper

---
 packages/clerk-js/src/core/clerk.test.ts | 39 +++++++++++++++++++++++-
 packages/clerk-js/src/testUtils.ts       | 37 ++++++++++++++++++++++
 2 files changed, 75 insertions(+), 1 deletion(-)

diff --git a/packages/clerk-js/src/core/clerk.test.ts b/packages/clerk-js/src/core/clerk.test.ts
index bdeeece80c..9859461516 100644
--- a/packages/clerk-js/src/core/clerk.test.ts
+++ b/packages/clerk-js/src/core/clerk.test.ts
@@ -1,6 +1,7 @@
 import type { ActiveSessionResource, SignInJSON, SignUpJSON, TokenResource } from '@clerk/types';
 import { waitFor } from '@testing-library/dom';
 
+import { mockNativeRuntime } from '../testUtils';
 import Clerk from './clerk';
 import { eventBus, events } from './events';
 import type { AuthConfig, DisplayConfig, Organization } from './resources/internal';
@@ -91,7 +92,10 @@ describe('Clerk singleton', () => {
     };
 
     Object.defineProperty(global.window, 'location', { value: mockWindowLocation });
-    Object.defineProperty(global.window.document, 'hasFocus', { value: () => true, configurable: true });
+
+    if (typeof globalThis.document !== 'undefined') {
+      Object.defineProperty(global.window.document, 'hasFocus', { value: () => true, configurable: true });
+    }
 
     const mockAddEventListener = (type: string, callback: (e: any) => void) => {
       if (type === 'message') {
@@ -295,6 +299,39 @@ describe('Clerk singleton', () => {
         expect(sut.session).toMatchObject(mockSession);
       });
     });
+
+    mockNativeRuntime(() => {
+      it('calls session.touch in a non-standard browser', async () => {
+        mockClientFetch.mockReturnValue(Promise.resolve({ activeSessions: [mockSession] }));
+
+        const sut = new Clerk(frontendApi);
+        await sut.load({ standardBrowser: false });
+
+        const executionOrder: string[] = [];
+        mockSession.touch.mockImplementationOnce(() => {
+          sut.session = mockSession as any;
+          executionOrder.push('session.touch');
+          return Promise.resolve();
+        });
+        cookieSpy.mockImplementationOnce(() => {
+          executionOrder.push('set cookie');
+          return Promise.resolve();
+        });
+        const beforeEmitMock = jest.fn().mockImplementationOnce(() => {
+          executionOrder.push('before emit');
+          return Promise.resolve();
+        });
+
+        await sut.setActive({ organization: { id: 'org-id' } as Organization, beforeEmit: beforeEmitMock });
+
+        expect(executionOrder).toEqual(['session.touch', 'before emit']);
+        expect(mockSession.touch).toHaveBeenCalled();
+        expect((mockSession as any as ActiveSessionResource)?.lastActiveOrganizationId).toEqual('org-id');
+        expect(cookieSpy).not.toHaveBeenCalled();
+        expect(beforeEmitMock).toBeCalledWith(mockSession);
+        expect(sut.session).toMatchObject(mockSession);
+      });
+    });
   });
 
   describe('.load()', () => {
diff --git a/packages/clerk-js/src/testUtils.ts b/packages/clerk-js/src/testUtils.ts
index ec3364d181..57d11a28c9 100644
--- a/packages/clerk-js/src/testUtils.ts
+++ b/packages/clerk-js/src/testUtils.ts
@@ -11,6 +11,43 @@ const render = (ui: React.ReactElement, options?: RenderOptions) => {
   return { ..._render(ui, { ...options }), userEvent };
 };
 
+/**
+ * Helper method to mock a native runtime environment for specific test cases, currently targeted at React Native.
+ * Makes some assumptions about our runtime detection utilities in `packages/clerk-js/src/utils/runtime.ts`.
+ *
+ * Usage:
+ *
+ * ```js
+ * mockNativeRuntime(() => {
+ *  // test cases
+ *  it('simulates native', () => {
+ *    expect(typeof document).toBe('undefined');
+ *  });
+ * });
+ * ```
+ */
+export const mockNativeRuntime = (fn: () => void) => {
+  describe('native runtime', () => {
+    let spyDocument: jest.SpyInstance;
+    let spyNavigator: jest.SpyInstance;
+
+    beforeAll(() => {
+      spyDocument = jest.spyOn(globalThis, 'document', 'get');
+      spyDocument.mockReturnValue(undefined);
+
+      spyNavigator = jest.spyOn(globalThis.navigator, 'product', 'get');
+      spyNavigator.mockReturnValue('ReactNative');
+    });
+
+    afterAll(() => {
+      spyDocument.mockRestore();
+      spyNavigator.mockRestore();
+    });
+
+    fn();
+  });
+};
+
 export * from './ui/utils/test/runFakeTimers';
 export * from './ui/utils/test/createFixtures';
 export * from '@testing-library/react';