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How to write a good user story

2010-07-26 09:47  敏捷的水  阅读(1439)  评论(0编辑  收藏  举报

Introduction to User Stories

User stories are first-class citizen for Scrum and Extreme Programming (XP), A user story is a very high-level definition of a requirement, just include enough information so that developers can estimate the time to implement it.

A good way to think about a user story is just a placeholder for remaindering the developer should have conservation with your customer.

How to write a user story?

You can follow below steps:

1. As a [Actor], I can/want [feature] because/so that

e.g.

As a dinner, I want have a lunch because I am hungry.

As a project Leader, I want make a plan.

As a user, I can manage my schedule.

2. Use index cards

Write an easy to understand user story title on Index card, the card can be a paper or electronic card in your project system.

e.g.

Title: Admin can add new user

Description: As a admin, he can add a new user.

3. Make it testable with acceptance stories

If use stories are short – how are we suppose to know all the different acceptance criteria? just write out any of your acceptance tests using this template:

Scenario 1: Title
Given [context]
And [some more context]…
When [event]
Then [outcome]
And [another outcome]…

For example:

Scenario 1: Account balance is negative
Given the account’s balance is below 0
And their is not a scheduled direct deposit that day
When the account owner attempts to withdraw money
Then the bank will deny it
And send the account owner a nasty letter.

What contents in the story?

It includes 3 C:

  • Card
  • Conversation
  • Confirm

What features a good story should have?

A good user story should have 6 features, INVEST:

  • Independent
  • Negotiable
  • Valuable
  • Estimatable
  • Small
  • Testable