Theory

• Testing micro services - the sane way
• Fowler - Testing Strategies in Microservice Architecture
• Fowler - Contract test
• Fowler - customer driven contract tests
• 7 reasons for consumer driven contracts
• Pact at John Lewis & Partners
• Oracle - How to Test Java Microservices with Pact
• YouTube talk

Contract test great introduction

• Introduction
• Writing tests
• Continuous Integration
• Lessons Learned

Testing message queues with Pact

• Pact blog 1
• Pact blog 2
• Reflectoring blog

Pact and Node JS

• Recommended guide
• Reflectoring blog
• Risingstack blog 1
• Risingstack blog 2

Practice

1a. Setup Pact Broker automatically

./gradlew setupPactBroker

• localhost:9292

Create provider:

./gradlew createProvider

1b. Setup Pact Broker manually

Full guide

git clone https://github.com/pact-foundation/pact-broker-docker.git

cd pact-broker-docker

docker-compose up

• localhost:9292

Create provider:

curl -v -XPOST -H "Content-Type: application/json" -d "{\"name\": \"ExampleProvider\"}" http://localhost:9292/pacticipants

2. Build and Publish Pacts

./gradlew :example-consumer-ronaldo:build

./gradlew :example-consumer-ronaldo:pactPublish

./gradlew :example-consumer-messi:build

./gradlew :example-consumer-messi:pactPublish

3. Verify pacts

./gradlew :example-provider:build

./gradlew :example-provider:pactVerify -PrequestVerification=true

Publish results:

./gradlew :example-provider:pactVerify -PrequestVerification=true -Ppact.verifier.publishResults='true'

4. Cleanup

• Kill task setupPactBroker
• Kill dockers ./killDockers.sh

More playgrounds (a bit dated)

• https://github.com/Mikuu/Pact-JVM-Example
• https://github.com/DiUS/pact-workshop-jvm
• https://github.com/RisingStack/pact-example (Node)