# How-to guides How-to guides for Juju developers * [Compile and run Juju agents on different architectures](https://documentation.ubuntu.com/juju/3.6/contributor/howto/compile-and-run-juju-agents-on-different-architectures.md) * [Create a unit test suite](https://documentation.ubuntu.com/juju/3.6/contributor/howto/create-a-unit-test-suite.md) * [Create a new MongoDB collection](https://documentation.ubuntu.com/juju/3.6/contributor/howto/create-new-mongo-db-collection.md) * [Debug a Dqlite core dump issue](https://documentation.ubuntu.com/juju/3.6/contributor/howto/debug-a-dqlite-core-dump-issue.md) * [Manage MongoDB](https://documentation.ubuntu.com/juju/3.6/contributor/howto/manage-mongodb.md) * [Merge forward](https://documentation.ubuntu.com/juju/3.6/contributor/howto/merge-forward.md) * [Write a unit test](https://documentation.ubuntu.com/juju/3.6/contributor/howto/write-a-unit-test.md) * [Write an integration test](https://documentation.ubuntu.com/juju/3.6/contributor/howto/write-an-integration-test.md) * [Write tests](https://documentation.ubuntu.com/juju/3.6/contributor/howto/write-tests.md)