Timed out waiting for asynchronous Angular tasks to finish: Protractor synchronization issue

Answer to the Core Questions

1. Is there a supported method to scope waitForAngularEnabled?

No. Protractor exposes browser.waitForAngularEnabled() as a global setting that applies to the entire browser context. There is no built‑in per‑page, per‑frame, or component scoping. The flag remains in effect until you call browser.waitForAngularEnabled(false) again. The only way to isolate its effect is to toggle it in beforeEach and afterEach hooks for each spec or page‑specific block.

2. What are the implications of disabling it in parallel runs?

• Other workers that share the same browser instance will inherit the disabled state, causing Angular synchronization to be skipped for those specs. This can lead to stale elements, race conditions, or false positives.
• If you re‑enable the flag after each spec, the workers remain isolated but you pay the cost of extra context switching.
• Failing to reset the flag can mask genuine Angular failures, making debugging harder.

3. Can configuration or custom extensions mitigate false‑positive timeouts?

• Use the experimental customSyncFn (Protractor 7+) to supply a function that returns a promise resolving when Angular is ready. It still applies globally but can be reset per spec.
• Write a custom browser.driver.wait that polls window.getAllAngularTestabilities() and resolves only when the queue drains or a timeout threshold is exceeded.
• Leverage browser.executeAsyncScript to inject a lightweight Angular readiness check that ignores third‑party macro‑tasks (e.g., by temporarily disabling them via a global flag in the page).
• Adjust allScriptsTimeout or getPageTimeout for specific tests that legitimately need more time.

Practical Steps for the Current Scenario

1. Wrap navigation to non‑Angular pages in a helper that disables sync, navigates, and re‑enables it:

   async function navigateToNonAngular(url) {
     await browser.waitForAngularEnabled(false);
     await browser.get(url);
     await browser.waitForAngularEnabled(true);
   }
   

2. In beforeEach of specs that interact with Angular, ensure the flag is enabled:

   beforeEach(async () => {
     await browser.waitForAngularEnabled(true);
   });
   

3. In afterEach of specs that disabled sync, re‑enable it to avoid leaking state:

   afterEach(async () => {
     await browser.waitForAngularEnabled(true);
   });
   

4. For flaky timeouts caused by third‑party widgets, create a custom wait that ignores known long‑running macros:

   const angularReady = () => {
     return browser.executeAsyncScript(function(callback) {
       const check = () => {
         const testabilities = window.getAllAngularTestabilities();
         const allStable = testabilities.every(t => t.isStable());
         if (allStable) {
           callback();
         } else {
           setTimeout(check, 100);
         }
       };
       check();
     });
   };
   await browser.driver.wait(angularReady, 15000, 'Angular did not become stable');
   

5. When running parallel workers, keep a global beforeAll that sets waitForAngularEnabled(true) and an afterAll that resets it. This ensures each worker starts with a clean state.

Verification Checklist

• Run a spec that navigates to a non‑Angular page, toggle sync off/on, and confirm subsequent Angular interactions succeed.
• Execute parallel tests with multiple workers while globally disabling sync; observe any stale‑element errors. Re‑enable after each spec and verify stability.
• Measure the time it takes for the custom waiter to resolve after disabling sync; ensure it no longer hits the 11‑second allScriptsTimeout.

Missing Diagnostic Detail

Could you confirm whether your test suite runs with multiple workers (e.g., maxConcurrency > 1) or a single worker? The recommendation to reset the flag per spec is stricter when parallelism is enabled.