spring-cloud-contract | samples for spring cloud contract | Application Framework library

I Created a sperate repository to store the contract as descibed in this link: https://github.com/spring-cloud/spring-cloud-contract/tree/main/samples/standalone/contracts

In the producer side, I added the generated jar of contract as follow:

I am using spring boot 2.5.7, java 8 and junit 5.

I'm trying to implement spring-cloud-contract with spring-cloud-stream. I have a producer that uses StreamBridge

I found this in Groovy Syntax documentation at 4.6.1. Special cases:

As slashy strings were mostly designed to make regexp easier so a few things that are errors in GStrings like $() or $5 will work with slashy strings.

What $() syntax means? give some usage examples please

I also found it at Define the Contract Locally in the Repository of the Fraud Detection Service:

...

I would like to know how am I supposed to create in Groovy the Json payload with a random value. For example

I'm learning about Spring Cloud Contract and have a question regarding the supported languages. While writing SCC Stub runner based contract tests the documentation seems to imply that we're supporting tests written in either JUnit or Spock.

https://cloud.spring.io/spring-cloud-contract/1.2.x/multi/multi__spring_cloud_contract_stub_runner.html

Can we use the Spring Cloud Contract Stub Runner only for Java / Groovy languages or does it support other languages as well?

I am trying to introduce path param in urlPath as regexp in the following way:

My team is creating 2 microservices. One in Spring - consumer and another in Node.js - producer. They will communicate through http rest api.

We would like to test them using contract. I've seen https://spring.io/blog/2018/02/13/spring-cloud-contract-in-a-polyglot-world but it's a different case (producer is on Java side and consumer is on Js).

Is there a way to define contract and generate tests for both microservices in such case?

Currently we have a github repo where we store all the contracts, another repo which contains the producer code, and last but not least another one which contains the consumer code.

On the consumer side working with branches when pointing to the contract repo is well supported by using properties like stubrunner.properties.git.branch (more info can be found here https://cloud.spring.io/spring-cloud-contract/reference/html/appendix.html#additional-application-properties)

But on the producer I can not see any way of using the contracts of a concrete branch, we just can point to the github repo where contracts are stored by using contractsRepositoryUrl of the spring-cloud-contract-maven-plugin

This will be very useful to create a flow of contract testing :

• a PR to contract testing repo with the proposal
• which will trigger the producer job (passing the pr branch name)
• if the repo with the contracts contains the bindings, populated by the producer(previous step), then we could trigger the consumer job and validate if everything is fine with these proposed changes
• once the 2 builds are green (producer and consumer) we can merge the changes on the contracts repo

UPDATE : the following spring-cloud-contract-maven-plugin config worked for me, also you can set this property through command line like this -Dstubrunner.properties.git.branch=other_branch_than_master