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Building with Backends

With all required backends installed, stack build can build all packages listed in stack.yaml and is equivalent to:

> stack build persistent persistent-template persistent-sqlite persistent-test
persistent-mongoDB persistent-mysql persistent-postgresql persistent-redis

If backends such as mysql and postgres are not installed then the default build will fail as will builds for packages for those backends alone:

> stack build persistent-mysql
...
    Process exited with code: ExitFailure 1
    Configuring mysql-0.1.4...
    setup: The program 'mysql_config' is required but it could not be found
    
> stack build persistent-postgresql
...
    Process exited with code: ExitFailure 1
    Configuring postgresql-libpq-0.9.4.0...
    setup: The program 'pg_config' is required but it could not be found.

To build all other packages, drop the failing package names as targets:

> stack build persistent persistent-template persistent-sqlite persistent-test
persistent-mongoDB persistent-redis
...
Completed 6 action(s).

Running persistent tests using Stack

For testing specific package:

> stack test persistent-sqlite

For appropriate backend specific testing using the package persistent-test:

> stack test persistent-test --flag persistent-test:<backend> --exec persistent-test

where is one listed in the cabal file

Running persistent tests using Cabal

All tests are ran from the persistent-test directory

> cd persistent-test

Use cabal

> cabal configure --enable-tests

If you would like to configure tests with a specific backend that can be enabled using

> cabal configure -f<backend> --enable-tests

where is one of mongodb/postgresql/mysql/couchdb.

Now run with

> cabal build && dist/build/test/test

Testing Backends

By default the sqlite backend is tested. To test other backends, you can give a flag described in persisten-test.

> cabal configure -fmongodb --enable-tests

Installing backends

For an easy install we recommend running a database from a docker container. Lets develop easy entry points for testing a database using a command runner.

> just --list
> just test-mongo

Installing just is easy. Or you can look in ./bin/ for the commands it will call and run them directly Or Lets develop a docker-compose file for running different databases.