Hand-written end-to-end tests give you full control, and they take a long time to write and keep alive. Here's how AI-authored tests that replay for free compare with scripting every test yourself.
| CodeReviewer | Hand-written test scripts | |
|---|---|---|
| Writing a new test | Pick a module, approve the plan of cases, and watch it author real tests in a browser | An engineer writes and debugs each test by hand |
| Knowing what to test | Cases are proposed from your code, positive and negative, before anything is written | Whatever the author thinks of on the day |
| Cost of each run | Replays use no AI, so they are unlimited | Free to run, but every hour of upkeep is engineering time |
| When the UI changes | Choose Heal and only the failing tests are rewritten and re-verified | Someone finds and fixes each broken selector |
| Flaky tests | Benched and retried on their own instead of failing the suite | Depends on the framework and the team's discipline |
| Mobile | The same flow on real Android phones | A separate framework and skill set |
| Control over every step | Generated tests you can review and export, with a plan you approve | Total control, if you have the time to write it |
| Security and load from the same flows | Recorded journeys feed security scans and load tests too | Separate scripts for each tool |
The hard part of end-to-end testing isn’t the first test. It’s the hundredth, and keeping all hundred green while the product changes every week. Authoring with AI once, replaying for free and healing only what breaks keeps the upkeep proportional to what changed, not to the size of the suite.
No. You approve the plan of cases before authoring, review every recorded test, and can export the suite's cases to Excel.
On demand or on a schedule you set, as often as nightly. Replays are free, so there is no reason to ration them.
Yes. Many teams keep their critical hand-written tests and use CodeReviewer to cover the long tail they never got round to.
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