This document discusses behavioral driven development (BDD) and how it can help teams achieve shared understanding. BDD involves capturing desired behaviors in a format like Gherkin and then automating tests using a framework like Cucumber. This allows teams to define expected functionality through discussion and examples, develop code to meet those expectations through test-driven development, and validate that the code works as intended. BDD promotes collaboration between different roles to ensure software delivers the features stakeholders want.

2. BEHAVORIAL DRIVEN DEVELOPMENT
Shared Understanding Goes A Long Way!
Chris Riley

3. WHO IS CPRIME?

4. It takes more than talent and technology to deliver
performance worth celebrating. It takes the concerted
effort of those willing to wrestle with complexity…
and overcome complacency.
At Cprime, our performer-first approach to consulting
drives harmonious transformations across the enterprise,
while our best-in-class managed services ensure business
doesn’t miss a beat.
CPRIME:
DELIVER PERF ORMAN CE
WHO IS CPRIME

5. Some Thoughts
• Why am I here? - QUALITY is everyone’s job
• How do we make quality inherent? – WE define it with our customer
• What are we trying to deliver? – WORKING Software

6. Personal Experiences
• Measuring a derelict house – simplicity, standards
• Learning to row on a collegiate crew team – practice…practice … practice
• Pearson Student Registration System – trust, empathy, grit
= Shared Understanding

7. Shared Understanding: Example Mapping
https://cucumber.io/blog/example-mapping-introduction/
Rule = Acceptance Criteria
Example = Exercise the Rule
Question = Unknown Outcomes

8. Behavioral Driven Development
• Deliberate Discovery (e.g. Example Mapping)
• Test Driven Development

9. Test first, software second
• TDD and BDD focus on creating the test first
• Software is then constructed to make the test pass
• Refactoring can then occur on the software using the test to validate

10. BDD Lifecycle
CAPTURE BEHAVIOR
Create Gherkin to support
Stories and Scenarios
TEST AUTOMATION
Leverage Cucumber
Framework to Generate Test
Stubs, Add Logic and Include
in Continuous Integration
TEAM DEFINES
Product, UX, QA, Business,
Development, Architecture
obtain consensus on
expected behavior(s)

11. Gherkin Example
Story: As a user I would like to login to the Customer App
#features/example1.feature
Feature: As a Customer App user I want to login
Scenario: Valid User
Given I go to "http://localhost:8090/CustomerApp/login"
When I enter the user ”criley"
And the password "111111111"
And click the button Sign In
Then I should see the CustomerApp Home Page

12. Cucumber Example
module.exports = function() {
this.Given(/^I go to "([^"]*)"$/, function (arg1,callback) {
// Write code here that turns the phrase above into concrete actions
callback(null, 'pending');
});
this.When(/^I enter the user "([^"]*)"$/, function (arg1, callback) {
// Write code here that turns the phrase above into concrete actions
callback(null, 'pending');
});
this.When(/^the password "([^"]*)"$/, function (arg1, callback) {
// Write code here that turns the phrase above into concrete actions
callback(null, 'pending');
});
…
this.Then(/^I should see the Fedline Home Page$/, function (callback) {
// Write code here that turns the phrase above into concrete actions
callback(null, 'pending');
});
};

13. Cucumber Completed Example
module.exports = function() {
this.Given(/^I go to "([^"]*)"$/, function (site) {
browser.get(site);
});
this.When(/^I enter the user "([^"]*)"$/, function (arg1) {
element(by.id('loginId')).sendKeys(arg1);
});
…

14. Cucumber Completed Example
ChristophersMBP:Example1 criley$ protractor protractor.conf.js
[10:12:14] I/hosted - Using the selenium server at http://127.0.0.1:4444/wd/hub
[10:12:14] I/launcher - Running 1 instances of WebDriver
Feature: As a CustomerApp user I want to login
cucumber event handlers attached via registerHandler are now passed the
associated object instead of an event
getPayloadItem will be removed in the next major release
Scenario: Valid User
✓ Given I go to "http://localhost:8090/CustomerApp/login"
✓ When I enter the user ”criley"
✓ And the password "111111111"
✓ And click the button Sign In
✓ Then I should see the CustomerApp Home Page
1 scenario (1 passed)
5 steps (5 passed)
0m00.006s
[10:12:15] I/launcher - 0 instance(s) of WebDriver still running
[10:12:15] I/launcher - chrome #01 passed

15. Team Benefit
IN ACTION
“We keep going until the
group is satisfied that the
scope of the story is clear, or
we run out of time.”

16. Development Benefit
The test is the acceptance criteria
verbatim and BDD allows me to
validate my code with the business
requirements.
“
“

17. Summary
• Why am I here? - QUALITY is everyone’s job
• How do we make quality inherent? – WE define it with our customer
• What are we trying to deliver? – WORKING Software

18. THANK YOU