Transcript
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Who Am I?
My name Nguyen Thi Hong Thuy
Studied at Danang University of Technology
Master of Computer Science
IT developing experience started at University in 2004
Java Developer at MagRabbit VN
Java Developer, Tester at Axon Active VN
Email thuy.nguyen@axonactive.vn
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The Importance of Requirements Behavior Driven Developments (BDD)
• Why born BDD?• What is BDD?• Why use BDD?• BDD Style & Tools
How we have applied BDD in our projects Workshop Conclusion of BDD Q&A
Agenda
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The importance of requirements
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The importance of requirements
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The importance of requirements
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Behavior Driven Developments
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Test-driven development is a method of software development in which unit testing is repeatedly done on source code
TDD
Workflow of TDD
REFACTORGREEN
(Pass)
RED(Fail)
REPEAT PROCESS
1. Write a test that fails
2. Make only enough code for it to pass
3. Improve code quality
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Why born BDD?
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What is BDD?
Behavior-Driven Development (BDD) is a set of
software engineering practices designed to help
teams build and deliver more valuable, higher quality
software faster.
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BDD
Building the right software
Automated Acceptance Criteria
API and code design
Building the software right
Feature injection
Collaboration
Living Documentation
What is BDD?
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Workflow of TDD/BDD
BDD was originally designed as an improved version of TDD
TDD
BDD
Refactor
n cycles
Make the test pass
Write a failing test
Write a failing feature test
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Customer tells the business analyst what he wants
Why use BDD?
The business analyst writes a requirements document
The developer translates the requirements into software
The tester translates the requirements into test cases
Customer
The traditional development process
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There are many opportunities for information to get lost in
translation, be misunderstood, or just be ignored
Chances are that the new module itself may not do exactly what
was required and that the documentation won’t reflect the initial
requirements
Problems
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Why use BDD?
The development process is applying BDD
Customer and BA have a conversation about what he needs.
BA, the developer and the tester elaborate the requirements together
The automated tester The manual tester
The developer
Customer
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BDD Style – Feature file example
Meta:Narrative:In order to login ZingPoll successfullyAs a userI want to have single choice pollSo that I can create polls, share it to my friends & collect the option about it
Scenario: Create a single choice poll successfulGiven I am on ZingPoll websiteWhen I click the Sign In button on the menu bar to register an new accountThen The Sign In form should be shownWhen I enter email <email> and password <password>And I click the Sign In button on the formThen I log in into website successfulWhen I enter <question> into the question fieldAnd I enter the <first_anwser> and <second_answer> into the answer fieldsAnd I click the Create Poll buttonThen The poll is created successfully
Examples:|email |password |question |first_anwser|second_answer|bddteam1@gmail.com | zingpoll | Have you ever applied BDD in your project? |Yes |No|
Feature
Scenario
What business outcomes are you trying to achieve?
Who needs it ?
What must you do to help achieve this outcome?
Each row represents separate set of test data
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Feature: Login ZingPoll system
As a userI want to login to Zingpoll websiteSo that I can use all features
Who’s using the system? What are they doing?
Why do they care?
BDD Style – Feature file example
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Scenario: Login ZingPoll system successful
Given I am on ZingPoll website
When I click the Sign In button on the menu bar to register an new
account
Then The Sign In form should be shown
When I enter email <email> and password <password>
And I click the Sign In button on the form
Then I log in into website successful
• Given - Sets up preconditions, or context, for the scenario • When - The action, or behavior, that we’re focused on• Then - Checks post-conditions and verifies that the right thing happened in the When stage
BDD Style – Feature file example
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The principal activities and outcomes of BDD
Business goal Features Examples Executable specifications
Low-levelspecifications
Application codeLiving
documentation
Real-timeprogress reports
Technicaldocumentation
Automaticvalidation
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The principal activities and outcomes of BDD
Examples Executable specifications
Low-levelspecifications
Application code
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How we have applied BDD in our current projects
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Repositories
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Build Jenkins
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Pipeline
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Workshop
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Introduce ZingPoll Website
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The Business Rules layer
The Business Flow layer
The Technical layer
Well-written automated acceptance criteria
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Workshop
Story 1: As a ZingPoll userI want to login to ZingPoll websiteSo that I can use all features
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Workshop
Story 2: As a ZingPoll userI want to have single choice pollSo that I can create polls, share it to my friends & collect the option about it
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Conclusion of BDD
Focus effort
Reduce waste and misaligned requirement
Deliver more valuable software
Make changes safety
Faster and more reliable releases
Reduced maintenance costs
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Potential challenges of BDD
BDD requires high business engagement and collaboration
BDD works best in an Agile or iterative context
Poorly written tests can lead to higher test-maintenance costs
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Q&A
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Thanks for your attention
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