bdd In 2019
cypress & cucumber
bene@theodo.co.uk
Ben Ellerby
Unit
Integration
End to End
Domain-Driven
DESIGN
DDD
Evans, E., 2004. Domain-driven design: tackling complexity in the heart of software. Addison-Wesley Professional.
Ubiquitous Language
Domain-Driven
DESIGN
DDD
bEHAVIOR DRIVEN
development
BDD
"Behaviour is a more useful word than test"
https://dannorth.net/introducing-bdd/
"Requirements are behaviour, too"
BDD Trend
BDD
bEHAVIOR DRIVEN
development
BDD
- Features are defined in stories
- Stories capture both the behaviour and acceptance criteria
- The use of a ubiquitous DSL and standardised structure ensure understanding all the way through the process
GIVEN, WHEN, THEN
BDD
Given some context When some action Then some result
GIVEN, WHEN, THEN
BDD
Given the account has £10 When the customer requests £20 Then cash is not dispensed And an error message is displayed And the card is returned
Narrative
BDD
Story: One line description As a ROLE In order to GOAL I want to BENEFIT
Cypress
Cypress
Text
Cypress
Cypress
Cypress
Cypress
Cypress does not use Selenium
Cypress
describe('My First Test', function() {
it('Does not do much!', function() {
expect(true).to.equal(false)
})
})Cypress
describe('My First Test', function() {
it('Does not do much!', function() {
expect(true).to.equal(false)
})
})Cypress
www.cypress.io
Cypress
www.cypress.io
Cucumber
www.cucumber.io
Provides the DSL for writing scenarios with the Gherkin syntax
Helping to provide living documentation
Cypress + Cucumber
https://github.com/TheBrainFamily/cypress-cucumber-preprocessor
+
Cypress + Cucumber
import { Then } from "cypress-cucumber-preprocessor/steps";
Then(`I see {string} in the title`, title => {
cy.title().should("include", title);
});https://github.com/TheBrainFamily/cypress-cucumber-example
Cypress + Cucumber
Backlog
Refinement
Tech Refinement
Review
Planning
Cypress + Cucumber
Kaizen
ben@ellerby.tech
https://www.linkedin.com/in/benjaminellerby/
BDD in 2019: Cypress and Cucumber
By Ben Ellerby
BDD in 2019: Cypress and Cucumber
The talk was given at the QE-Roundabout Meetup in London 12/02/19.
