The document discusses consumer-driven contract testing. It explains that with contract testing, the consumer tests against a mock of the provider, records expectations, and then the provider validates that its implementation meets those expectations. This allows the consumer and provider to develop independently while maintaining integrated functionality. The Pact tool is presented as a way to implement contract testing across different programming languages and frameworks in a standardized way.

1. INTEGRATIONINTEGRATION
CONTRACT TESTINGCONTRACT TESTING

2. ABOUT MEABOUT ME
DANIELE D'ANGELIDANIELE D'ANGELI
@DANGELIDANIELE@DANGELIDANIELE
HTTP://DANIELEDANGELI.COMHTTP://DANIELEDANGELI.COM
BORN AND RAISED IN ROMEBORN AND RAISED IN ROME
2 YEARS IN LONDON2 YEARS IN LONDON
ACTUALLY I'M WORKING WITHACTUALLY I'M WORKING WITH
@ADESPRESSO, IN ROME WITH@ADESPRESSO, IN ROME WITH

3. ... FROM A PREVIOUS... FROM A PREVIOUS
PRESENTATION OFPRESENTATION OF
MINEMINE

5. WHAT WE'RE TALKINGWHAT WE'RE TALKING
ABOUTABOUT

6. ..WHATWHAT
.HOW.HOW
.HOW ABOUT NEXT.HOW ABOUT NEXT
CONSUMER DRIVENCONSUMER DRIVEN
CONTRACT TESTINGCONTRACT TESTING

7. ...WEB APPLICATION...WEB APPLICATION

8. ...WEB APPLICATION TODAY...WEB APPLICATION TODAY

9. HTTP APIHTTP API

10. HOW OUR SYSTEMS LOOKSHOW OUR SYSTEMS LOOKS
LIKE?LIKE?

11. ... AT VERY LEAST... AT VERY LEAST

12. ... A STEP FORWARD... A STEP FORWARD

13. TESTING STRATEGIESTESTING STRATEGIES
CONFIDENCECONFIDENCE
FASTER&EASYFASTER&EASY

14. ISOLATIONISOLATION

15. INDEPENDENTINDEPENDENT
UNIT TESTUNIT TEST
TRIVIALTRIVIAL

16. FUNCTIONAL TESTFUNCTIONAL TEST
ISOLATED FROMISOLATED FROM
EXTERNALEXTERNAL
DEPENDENCIESDEPENDENCIES

17. STUBBING EXTERNALSTUBBING EXTERNAL
RESPONSES!RESPONSES!

18. CONSUMERCONSUMER PROVIDERPROVIDER
REMOTE BOUNDARYREMOTE BOUNDARY
STUBSSTUBS

19. Remember!
HTTP IS AHTTP IS A
PROTOCOLPROTOCOL

20. Remember!
A NETWORK PROTOCOL
DEFINES RULES TO
ALLOWING
INTERACTIONS
BETWEEN TWO PARTS

21. IT'S A GOOD STUBBING?IT'S A GOOD STUBBING?
WHO ENSURE?WHO ENSURE?

22. IT'S A GOOD INTERACTION?IT'S A GOOD INTERACTION?
WHO ENSURE?WHO ENSURE?

24. NO ONENO ONE

25. TOO OFTEN THISTOO OFTEN THIS
PROCESS IS DRIVENPROCESS IS DRIVEN
BYBY HUMANSHUMANS

28. INTEGRATION TESTINGINTEGRATION TESTING

29. CONSUMERCONSUMER
END 2 END TESTINGEND 2 END TESTING
PROVIDERPROVIDER

30. ...WEB APPLICATION TODAY...WEB APPLICATION TODAY

31. CONSUMERCONSUMER
END 2 END TESTING (...TODAY)END 2 END TESTING (...TODAY)
PROVIDERPROVIDER
&
CONSUMERCONSUMER
PROVIDERPROVIDER
&
CONSUMERCONSUMER
PROVIDERPROVIDER
&
CONSUMERCONSUMER

32. STRENGHTSSTRENGHTS

33. WEAKNESSWEAKNESS
HARD TO TEST IN DEV ENVHARD TO TEST IN DEV ENV
SLOWSLOW
HARD TO WRITEHARD TO WRITE
HARD TO SETUPHARD TO SETUP

34. INTEGRATIONINTEGRATION
CONTRACT TESTINGCONTRACT TESTING
(CONSUMER DRIVEN)(CONSUMER DRIVEN)

35. ... FROM MARTIN FOWLER... FROM MARTIN FOWLER
HTTP://MARTINFOWLER.COM/BLIKI/INTEGRATIOHTTP://MARTINFOWLER.COM/BLIKI/INTEGRATIO
NCONTRACTTEST.HTMLNCONTRACTTEST.HTML

36. Remember!
TESTTEST DOUBLEDOUBLE IS A GENERIC TERM FORIS A GENERIC TERM FOR
ANY CASE WHERE YOU REPLACE AANY CASE WHERE YOU REPLACE A
PRODUCTION OBJECT FOR TESTINGPRODUCTION OBJECT FOR TESTING
PURPOSES.PURPOSES.
... FROM MARTIN FOWLER... FROM MARTIN FOWLER

37. ... FROM MARTIN FOWLER... FROM MARTIN FOWLER
RUN YOUR CONSUMER TESTS AGAINSTRUN YOUR CONSUMER TESTS AGAINST
A TESTA TEST DOUBLEDOUBLE

38. RECORD CONSUMERRECORD CONSUMER
EXPECTATIONSEXPECTATIONS

39. VERIFYVERIFY
EXPECTATIONS ONEXPECTATIONS ON
PROVIDERPROVIDER

40. HTTPS://GITHUB.COM/REALESTATE-COM-AU/PACTHTTPS://GITHUB.COM/REALESTATE-COM-AU/PACT
PACTPACT
RUBY IMPLEMENTATIONRUBY IMPLEMENTATION​​
STUBBING AND VERIFYSTUBBING AND VERIFY
CONSUMER CONTRACTSCONSUMER CONTRACTS

41. PACTPACT
WORKING WELLWORKING WELL
SPECIALLY FOR RUBYSPECIALLY FOR RUBY
PROJECTSPROJECTS
HTTPS://GITHUB.COM/REALESTATE-COM-AU/PACTHTTPS://GITHUB.COM/REALESTATE-COM-AU/PACT

42. PACTPACT
HTTPS://GITHUB.COM/SEEK-JOBS/PACT-GOHTTPS://GITHUB.COM/SEEK-JOBS/PACT-GO
HTTPS://GITHUB.COM/SEEK-JOBS/PACT-NETHTTPS://GITHUB.COM/SEEK-JOBS/PACT-NET​​
HTTPS://GITHUB.COM/DIUS/PACT-JVMHTTPS://GITHUB.COM/DIUS/PACT-JVM
HTTPS://GITHUB.COM/REALESTATE-COM-AU/PACTHTTPS://GITHUB.COM/REALESTATE-COM-AU/PACT

43. Consumer

44. ProvidersCONSUMERCONSUMER
RUNS TEST LOCALLYRUNS TEST LOCALLY

45. RUNS TEST LOCALLYRUNS TEST LOCALLY
Providers
STUB, CREATE ANDSTUB, CREATE AND
GENERATEGENERATE CONTRACTSCONTRACTS
CONSUMERCONSUMER PROVIDERPROVIDER

46. CONSUMERCONSUMER
RUNS TEST LOCALLYRUNS TEST LOCALLY
Providers PROVIDERPROVIDER
STUBBING, CREATE ANDSTUBBING, CREATE AND
GENERATEGENERATE CONTRACTSCONTRACTS
SAVESAVE CONTRACTSCONTRACTS
SOMEWHERESOMEWHERE

47. ARTIFACTSARTIFACTS
{
"consumer": {
"name": "collaborator client"
},
"provider": {
"name": "collaborator api"
},
"interactions": [
{
"provider_state": "there is a collaborator with id 23",
"description": "get collaborator",
"request": {
"headers": {
"Accept": "application/json"
},
"method": "GET",
"path": "/collaborators/23"
},
"response": {
"body": {
"name": "John",
"role": "Client Relantionship"
},
"headers": {
"Content-Type": "application/json"
},
"status": 200
}
},
...
}

48. LOAD CONTRACTSLOAD CONTRACTS
PROVIDERPROVIDER

49. FOREACH CONTRACTFOREACH CONTRACT
1. SET UP WORKING STATESET UP WORKING STATE
(DATABASE AND EXTERNAL(DATABASE AND EXTERNAL
DEPENDENCIES)DEPENDENCIES)
PROVIDERPROVIDER
LOAD CONTRACTSLOAD CONTRACTS

50. 1. SET UP WORKING STATESET UP WORKING STATE
(DATABASE AND EXTERNAL(DATABASE AND EXTERNAL
DEPENDENCIES)DEPENDENCIES)
2. MAKE INTERNAL HTTP CALLMAKE INTERNAL HTTP CALL
(BASED ON CONTRACT)(BASED ON CONTRACT)
LOAD CONTRACTSLOAD CONTRACTS
FOREACH CONTRACTFOREACH CONTRACT
PROVIDERPROVIDER

51. 1. SET UP WORKING STATESET UP WORKING STATE
(DATABASE AND EXTERNAL(DATABASE AND EXTERNAL
DEPENDENCIES)DEPENDENCIES)
2. MAKE INTERNAL HTTP CALLMAKE INTERNAL HTTP CALL
(BASED ON CONTRACT)(BASED ON CONTRACT)
3. VERIFY RESPONSEVERIFY RESPONSE
FOREACH CONTRACTFOREACH CONTRACT
LOAD CONTRACTSLOAD CONTRACTS
PROVIDERPROVIDER

52. PACTPACT
INTEROPERABILITYINTEROPERABILITY

53. HOW ABOUT PHP?HOW ABOUT PHP?

55. OOPS! SOME ERRORS COULDOOPS! SOME ERRORS COULD
OCCURS...OCCURS...
LET ME TRY LIVELET ME TRY LIVE
CODING...CODING...

56. PACT-PHP [PROVIDER]PACT-PHP [PROVIDER]
PARSE CONTRACTSPARSE CONTRACTS
LOAD STATELOAD STATE
PARSE AND CREATEPARSE AND CREATE
PSR7PSR7 REQUESTREQUEST
PROVIDER APIPROVIDER API
CREATECREATE
PSR7PSR7 RESPONSERESPONSE
VERIFY EXPECTEDVERIFY EXPECTED
PSR7PSR7 RESPONSERESPONSE

57. PACT-PHP [PROVIDER]PACT-PHP [PROVIDER]
/**
* @param Closure $makeRequest How make a ps7Request
* @param Closure $setUp Setup the test state
* @param Closure $tearDown Setup up back the state
*/
public function honorContracts(
Closure $makeRequest,
Closure $setUp,
Closure $tearDown
)
FRAMEWORK INDEPENDENTFRAMEWORK INDEPENDENT

58. RECAPRECAP
CONSUMER DRIVENCONSUMER DRIVEN
CONTRACT TEST IS ANCONTRACT TEST IS AN
ALTERNATIVE TO END TOALTERNATIVE TO END TO
END TESTEND TEST

59. WHENWHEN
SOA/MICROSERVICESSOA/MICROSERVICES
ARCHITECTUREARCHITECTURE
ONLY WHEN YOU REALLYONLY WHEN YOU REALLY
NEED ITNEED IT

60. PACTO-PHPPACTO-PHP
IMPROVE SERVICEIMPROVE SERVICE
PROVIDERPROVIDER

61. PACTO-PHPPACTO-PHP
IMPLEMENT CONSUMERIMPLEMENT CONSUMER
SIDESIDE
Integration with Guzzle?

62. THANKSTHANKS