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Deploy with ConfidenceConsumer Driven Contract tests with Pact
Scenario
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Scenario (cont.)
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Test
Test
Test
Test Test
Scenario (cont.)
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Test
Test
Test
Test Test
Scenario (cont.)
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Test
Test
Test
Test Test
dev sit
test
dev sit
test
dev sit
test
Scenario (cont.)
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Test
Test
Test
Test Test
Scenario (cont.)
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Test
Test
Test
Test Test3RD PARTY SOFTWARE
“Integrated tests are a scam”
Talk by J. B. (Joe) Rainsberger
http://bit.ly/29IHASL(presentation)
http://bit.ly/29uw8GX(blogpost)
“Integrated tests are a scam”
▪ They take too long to run
▪ Infrastructure pain
▪ Unreliable
▪ Costly
Consumer Driven Contracts(Testing)
Ian Robinson
Consumer Driven Contract (Testing)
List of agreements between Consumer and Provider
Consumer Driven Contract (Testing)
List of agreements between Consumer and ProviderRequest / Response pair
Consumer Driven Contract (Testing)
Consumer Driven Contract is a pattern that
drives the development of the Provider
from its Consumers point of view
Micro Service 1
Micro Service 2 Micro Service 3 Micro Service 4
Consumer 2
Provider Consumer 1 Consumer 3
Consumer 2
Provider Consumer 1 Consumer 3
Consumer 2
Provider Consumer 1 Consumer 3
Benefits?
▪ Provider knows when a consumer will break
▪ Documentation
▪ Test independence
Pact
Pact is a testing tool that guaranteesthose Contracts are satisfied
pact.io
Pact
▪ Essentially TDD for Services
▪ Fail fast, recover fast
▪ Started at REA with a Ruby implementation
▪ Now available in
▪ JVM (Java, Scala, Groovy)
▪ .NET
▪ Javascript / Node▪ Go▪ Swift
2-Step Process
2-Step Process
Pact JS
▪ Under github.com/pact-foundation
▪ pact-js
▪ karma-pact
▪ pact-node
▪ pact-js-mocha (WIP)
karma-pact
▪ Plugin for Karma
▪ Manages Provider Mock Server
Pact Node
▪ Wraps the Ruby Provider Mock Server
▪ Allows for interaction recording and verification
▪ Enables Pact publishing
▪ Enables management of multiple servers
Pact JS Mocha
▪ Abstracts the DSL
▪ “Extends” Mocha’s BDD interface
▪ Less boilerplate
▪ Improved readability
▪ Still WIP (feedback welcome!)
Code
Consumer
HTTPClient
Provider
GET consumer/projects/1/tasks
GET provider/tasks
Sharing Pacts
▪ Pact Broker
▪ There’s even a Docker container!▪ Has to run on port 80 though
Pact JS
▪ docs.pact.io
▪ Gitter
▪ gitter.im/pact-foundation
▪ gitter.im/realestate-com-au/pact
▪ gitter.im/DiUS/pact-jvm
▪ groups.google.com/forum/#!forum/pact-support
Finding Help
Thanks! Questions?
@tarciosaraiva @pact_up
