This reposiroty consists of code used for demo in talk give at "Thoughtworks vodqa, Pune" for contract testing on 01-Aug-2020

1. Clone this repository.

2. Start docker in the machine. Install docker in your machine from here if you dont have it.

3. Navigate to the root folder level of the cloned repository and bring up the pact broker in docker using below command.

   docker-compose up

   The docker compose file pulls the pact-broker image and also spawns up the prostgres DB which is used by pact-broker to store data. Dive into the compose file for more understanding.

4. If every thing goes well, you should be able to access the pact broker UI at http://localhost:9292

1. We have two consumers and one provider for the setup. (There are actually three different projects. I have pushed then into a single repo for ease of cloning.)
2. Import the consumer_one, consumer_two and provider_one into three different instances of your IDE respectively.

1. Open consumer_one in IDE.

2. Execute the gradle task to run the contract tests of consumer_one with below command.

   ./gradlew contractTest

    If everything goes well, the test runs successfully and you should be able to see
    a pact json file in 'build>pacts>consumer_two-provider_one.json'
   

3. Execute the gradle task to publish this pact to the pact-broker running in docker with below command.

   ./gradlew pactPublish

4. Go to the pact-broker UI (link in the Setting up pack broker above) and you should be able to see the pact of consumer_one in this UI

1. Repeat the same process as mentioned for consumer_one.

1. Open provider_one in IDE.

2. Execute the gradle task to verify the contracts from the pact-broker with below command.

   ./gradlew contractTest

    This task will verify the pacts of both the consumers published in pact-broker.
   

3. For the current setup, all the tests should come out green.

Experiment with the setup changing the pacts, repeat the process and run the contract tests, they should fail. The best way to learn is to do !

GOD SPEED !!