Consumer driven contract testing with Pact (at the European Testing Conference 2020)

CONSUMER DRIVEN CONTRACT
TESTING WITH PACT
The evolution of your APIs supporting with
tests
@nelisboucke @matteo_pierro
Overview
● Why?
● What is Contract Testing?
● Code example with Pact
● Challenges
Overview
● Why?
● What is Contract Testing?
● Code example with Pact
● Challenges
A STORY…
A STORY…
NOT COVERED BY TESTS?
Trustworthy
Cheap TargetedReliable
Integration tests
Use running
system
Use mocks
Reliability - +
Speed - +
Targeted - +
Environment setup - not needed
Test data - +
Easy to automate - +
Trustworthy + -
IF ONLY WE COULD VERIFY THE MOBILE
TEAM'S MOCKS ……..
Overview
● Why?
● What is Contract Testing?
● Code example with Pact
● Challenges
Contract Testing flow →
Consumer driven contract testing with Pact (at the European Testing Conference 2020)
Overview
● Why?
● What is Contract Testing?
● Code example with Pact
● Challenges
E-commerce →
Consumer driven contract testing with Pact (at the European Testing Conference 2020)
Code Example →
Overview
● Why?
● What is Contract Testing?
● Code example with Pact
● Challenges
Challenge: collaboration?
PACT does not solve your collaboration problems
● Provider must verify consumers’ expectations
● Consumer must check expectations with the provider
Challenge: Rework?
PACT replaces your previous mocks
● Rework / Extend consumer tests to for this
Challenge: When Applicability?
● You want to integrate fast
○ Evolving application
○ Fast feedback
○ Reduce integration risk
● Limited and known consumers
○ Typical settings
■ Single organisation, multiple teams
■ Frontend backend
■ Microservices
@matteo_pierro@nelisboucke
Questions?
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Consumer driven contract testing with Pact (at the European Testing Conference 2020)