Scenario Generator

A requirement says "users can reset their password." Scenarios say: this user, in this state, does this, and this happens. Scenarios are requirements made concrete enough to execute.

Scenario structure — Given/When/Then

Given  <initial state / preconditions>
When   <action the actor takes>
Then   <observable outcome>

Every scenario is one path through the system. A requirement usually generates 3–10 scenarios: one happy path, several edges, several errors.

Systematic scenario enumeration

For each requirement, walk the dimensions: