Simulacron quick training

This is a quick training about how to use simulacron.

Simulacron is a native protocol server simulator that helps facilitate the testing of scenarios that are difficult to reliably reproduce in driver clients and applications.

Slides

A PDF document is included here with an introduction to Simulacron.

How to run

To run the application it is required Java 17 and docker/docker-compose, then just need to generate the jar and start the docker compose

./gradlew build && docker-compose up -d

Docker compose will build a docker image for the spring application, a build is required to generate the jar. -d is used for detached mode.

Exercises

This Simulacron training contains functional tests for create book endpoint as first implementation.

As exercise, implement the following scenarios:

1. GET /books
   • Validate a 500 response status code when Cassandra times out to query all the books on database
   • Validate a 500 response status code when Cassandra has unavailable nodes querying all
2. GET /books/{id}
   • Validate a 500 response status code when Cassandra times out to query by id on database
   • Validate a 500 response status code when Cassandra has unavailable nodes querying by id
3. PUT /books/{id}
   • Validate a 500 response status code when Cassandra times out to query by id on database
   • Validate a 500 response status code when Cassandra has unavailable nodes querying by id
   • Validate a 500 response status code when Cassandra times out to insert books on database
   • Validate a 500 response status code when Cassandra has unavailable nodes on insert
4. DELETE /books/{id}
   • Validate a 500 response status code when Cassandra times out to query by id on database
   • Validate a 500 response status code when Cassandra has unavailable nodes querying by id
   • Validate a 500 response status code when Cassandra times out to delete books on database
   • Validate a 500 response status code when Cassandra has unavailable nodes on delete

Exercises resolution are available on the branch simulacron-tests