SpecBDD

Correct Answer: As a user, when I like an item, I want to add it to my Wishlist so that I can review or buy it later.

In SpecBDD (Specification by Example), creating functionalities is often articulated from the user's perspective. It enables developers to understand and implement essential aspects from the end user standpoint. Thus, the answer 'As a user, when I like an item, I want to add it to my Wishlist so that I can review or buy it later' is the most suitable specification for developing the 'Wishlist' feature. On the contrary, the other answers are either too broad, lacking the user's standpoint or defining unwanted behavior for this specification scope. For example. 'As a developer, I want to design the Wishlist feature' lacks the user's perspective; 'As a business owner, I want to increase sales using the Wishlist feature' might be the ultimate goal of the business but is too broad for a specification. Finally, 'As a user, I shouldn't add unwanted items to the Wishlist.' is defining an unwanted behaviour rather than a functional one.

Correct Answer: Given a user has selected multiple flights, when they choose to 'Reserve & Pay', then all selected flights should be booked and paid for in one transaction.

The correct answer is: 'Given a user has selected multiple flights, when they choose to 'Reserve & Pay', then all selected flights should be booked and paid for in one transaction.' This answer best meets the criteria of SpecBDD, which stresses the importance of defining behavior in specific, concrete terms. It explains the conditions (a user selecting multiple flights), the action (the user selecting the option to 'Reserve & Pay'), and the expected outcome (all selected flights should be booked and paid for in one transaction). The other answers, while they grasp aspects of the scenario, don't offer the same level of detailed specification. 'Reserve multiple flights in one go' is too vague, lacking clear action or results. 'When a user goes to reserve flights, they can pay immediately' doesn't specifically address reserving multiple flights. 'After choosing, the user can click 'Reserve & Pay' to book all flights and pay' seems correct, but it doesn't specify the precondition - that the feature should work when multiple flights have been selected.

Correct Answer: Given a student has completed an assignment, when they click on the 'Submit' button, then the assignment should be successfully submitted.

The question is related to Behaviour-Driven Development (BDD) specification, which ideally requires an acceptance criteria phrased in a 'Given-When-Then' format. This helps in understanding the condition ('Given'), the action ('When'), and the outcome ('Then'). In the context of the given question, the best way to phrase the specification for the feature would be 'Given a student has completed an assignment, when they click on the 'Submit' button, then the assignment should be successfully submitted.' This response perfectly fits the BDD format. Conversely, the other answers, although accurate in explaining the process, do not follow the specific 'Given-When-Then' format. Thus, these are considered incorrect in this context.