Agile principles can be applied to testing. When done they leverage the tester's skills with the developer's skills.
- Being agile (as we all are) you let the developer responsible know that you are about to test the new feature.
- As agile means collocated, you make sure you are near the developer and he/she can see your screen. Think of this as limited-pair testing perhaps, an agile balance of full pairing and letting the developer get on with his job.
- To enhance your pairing make sure you have a mirror so you can see the developer. Collaboration is critical to stress testing.
- Now go to the UI page that uses the feature and sweep your mouse pointer over the page watching the developers. When you see signs of stress ... click.