3.3The QA Estimation Anti-Pattern

Team: "This story is 3 points."
QA: "But testing will take 2 days."
Team: "We'll add a separate testing task."

This is wrong. If testing is separate from the story, the story's "done" status becomes meaningless. Testing effort should be baked into the story estimate.

Better approach:

Team: "This story is 3 points."
QA: "Given the testing needed (3 browsers, integration with payment API,
      6 edge cases), I think this is a 5."
Team: "Let's discuss. Can we split it to reduce risk?"