Verifying Microservice Integrations with Contract Testing

BEN SAYERS DEV • ATLASSIAN @BENSAYERSDEV

MAURI EDO QA • ATLASSIAN

@MAURI_EDO

Based on a true story.

Why didn’t your tests catch this?

So… How do you test?

Mocked dependencies

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Integration tests

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Isn’t there a better way?

Contract testing

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TH

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AT L A S S I A NP U R C H A S I N G

Billing Service User Service

{ user: “Ben” }

{ user: “Mauri” }

{ user: “Ben” }

Pact

~ G

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OFF-S ITE 201 6

P U R C H A S I N G

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TH

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Billing Service User Service

{ user: “Ben” }

{ user: “Mauri” }

{ user: null }

{ user: “Ben” }

Pact

~ G

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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HASING

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P U R C H A S I N G

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TH

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AT L A S S I A NP U R C H A S I N G

Billing Service User Service

{ user: “Ben” }

{ user: “Mauri” }

{ user: null }

Pact

~ G

REED IS GOOD~ THE F

UT

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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TH

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AT L A S S I A NP U R C H A S I N G

Billing Service User Service

{ user: “Ben” }

{ state: “Ben @ DB” user: “Ben” }

Pact

~ G

REED IS GOOD~ THE F

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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TH

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Billing Service User Service

{ user: “Ben” }

Response

Request

Pact

~ G

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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P U R C H A S I N G

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THE FU T U R E OF ATLAS

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TH

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Billing Service User Service

Response

Request

{ user: “Ben” }

(State: Ben @ DB)

Talk to each other.

Talk to each other.

Seriously, it works.

Billing Service User Service

Pact

~ G

REED IS GOOD~ THE F

UT

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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FUT

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F ATL A S S I AN PURC

HA

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P U R C H A S I N G

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THE FU T U R E OF ATLAS

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Response

Request

{ user: … }

{ users: … }

{ user: … }

~ G

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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FUT

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F ATL A S S I AN PURC

HA

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HASING

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P U R C H A S I N G

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THE FU T U R E OF ATLAS

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TH

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W

ME THE MONEY~

TH

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AT L A S S I A NP U R C H A S I N G

User Service

Pact

Billing Service

~ G

REED IS GOOD~ THE F

UT

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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FUT

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F ATL A S S I AN PURC

HA

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TH

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SING

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HASING

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P U R C H A S I N G

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THE FU T U R E OF ATLAS

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~ TH

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~ GREED IS GOOD~

TH

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AS

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O F F - S I T E 2 0 1 6

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TH

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AT L A S S I A NP U R C H A S I N G

Closing the loop

Closing the loop

Manually

Manually Directly

Closing the loop

Manually Directly Pact Broker webhook

Closing the loop

Manually Directly Pact Broker webhook

Swagger validator

Closing the loop

Pact

~ G

REED IS GOOD~ THE F

UT

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F ATLASS I A N P URCHA

SING

OFF-S ITE 201 6

P U R C H A S I N G

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HE

FUT

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F ATL A S S I AN PURC

HA

SIN

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O F F - S I T E 2 0 1 6P U R C H A S I N G

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FUT

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TH

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Contract tests are…

Trustworthy

Contract tests are…

Contract tests are…

TrustworthyFast

Contract tests are…

TrustworthyFast

Reliable

Contract tests are…

TrustworthyFast

ReliableTargeted

Contract tests are…

TrustworthyFast

ReliableTargeted Cheap

Getting started

pact.io

Supported Beta

Java

.NET

Ruby

JavaScript

Python

Swift

Go

“Convince me”

BEN SAYERS DEV • ATLASSIAN @BENSAYERSDEV

Verifying Microservice Integrations with Contract Testing

MAURI EDO QA • ATLASSIAN

@MAURI_EDO