improve multisession e2e

Author: jacekradko

integration/tests/session-token-cache/multi-session.test.ts

@@ -173,6 +173,41 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withSessionTasks] })(
       expect(tab2CacheInfo.currentSessionId).toBe(user2SessionInfo.sessionId);
       expect(tab2CacheInfo.cacheSize).toBeGreaterThan(0);
 
+      const tokenFetchRequests: Array<{ sessionId: string; url: string }> = [];
+      await context.route('**/v1/client/sessions/*/tokens*', async route => {
+        const url = route.request().url();
+        const sessionIdMatch = url.match(/sessions\/([^/]+)\/tokens/);
+        const sessionId = sessionIdMatch?.[1] || 'unknown';
+        tokenFetchRequests.push({ sessionId, url });
+        await route.continue();
+      });
+
+      const tokenIsolation = await page2.evaluate(
+        async ({ user1SessionId, user2SessionId }) => {
+          const clerk = (window as any).Clerk;
+
+          await clerk.setActive({ session: user1SessionId });
+          const user1Token = await clerk.session?.getToken();
+
+          await clerk.setActive({ session: user2SessionId });
+          const user2Token = await clerk.session?.getToken();
+
+          return {
+            tokensAreDifferent: user1Token !== user2Token,
+            user1Token,
+            user2Token,
+          };
+        },
+        { user1SessionId: user1SessionInfo.sessionId, user2SessionId: user2SessionInfo.sessionId },
+      );
+
+      expect(tokenIsolation.tokensAreDifferent).toBe(true);
+      expect(tokenIsolation.user1Token).toBeTruthy();
+      expect(tokenIsolation.user2Token).toBeTruthy();
+      expect(tokenFetchRequests.length).toBe(0);
+
+      await context.unroute('**/v1/client/sessions/*/tokens*');
+
       // In multi-session apps, each tab can have a different active session
       const tab1FinalInfo = await page1.evaluate(() => {
         const clerk = (window as any).Clerk;