## About the changes
This adds a Makefile to make it easy to test migrations from one version
of Unleash to another.
The script depends on [docker compose
V2](https://docs.docker.com/compose/migrate/)
**Before starting**: make sure you're inside test-migrations folder and
run `make clean` to be in a clean state.
We can run 2 versions of Unleash side by side with a shared database
(the second version will apply migrations to the DB):
```shell
UNLEASH_DOCKER_IMAGE=unleashorg/unleash-server:5.6.10 make start-unleash # defaults to port 4242
UNLEASH_DOCKER_IMAGE=unleashorg/unleash-server:latest make start-another-unleash # defaults to port 4243
make test # run basic UI tests against port 4242 (first image)
EXPOSED_PORT=4243 make test # run basic UI tests against port 4243
```
This also enables us to test our local repository with our code of
Unleash server running at port 4244 (`EXPOSE_PORT=4444 make run-current`
if you want to change it):
```shell
UNLEASH_DOCKER_IMAGE=unleashorg/unleash-server:5.6.10 make start-unleash # defaults to port 4242
make run-current # exposes the current backend at 4244
```
You can also connect the latest UI to any of the ports specified above,
starting the UI at port 3000:
```shell
EXPOSED_PORT=4242 make run-current-ui # exposed port defaults to 4244 which is the port of the current backend
```
## About the changes
This PR will validate that our current migrations are backward
compatible with the latest stable release of Unleash.
It will do so by starting a database, applying the latest migrations,
and then starting a docker container with the last stable unleash
release and running UI tests against it.
There's a risk that the current version of UI tests will not work with
the previous version of our UI. Because of that we copied the previous
version of cypress tests
(https://github.com/Unleash/unleash/tree/5.6/frontend/cypress) into oss
folder and removed the ones that are enterprise only. We can discuss a
better way of doing this to avoid having to maintain this folder always
in sync with the previous version of Unleash
This action will only run when there are changes in migrations or to
cypress tests.
