Dokku has a full test suite to assist in quick iterating development. These tests include a linter using shellcheck, functional unit tests using the Bats testing framework, and a deployment suite of example apps that use the most popular languages and frameworks.
We maintain the Dokku test harness within the
tests/unit/*.bats: Bats tests
tests/apps/: Example applications that can be used for tests
All pull requests have tests run against them on Github Actions, a continuous integration platform that provides Docker support for Ubuntu Trusty 18.04.
If you wish to skip tests for a particular commit, e.g. documentation changes, you may add the
[ci skip] designator to your commit message. Commits that should be tested but have the above designator will not be merged.
While we do provide official packages for a variety of platforms, as our test suite currently runs on Ubuntu Trusty 18.04, we only provide official installation support for that platform and the latest LTS release of Ubuntu (currently 20.04).
Setup Dokku in a Vagrant VM.
Run the following to setup tests and execute them:
vagrant ssh sudo su - cd ~/dokku make ci-dependencies setup-deploy-tests # execute the entire test suite (linter, bats tests, and app deployment tests) make test # run linter make lint # execute all bats tests make unit-tests # execute all app deployment tests make deploy-tests
After making changes to your local Dokku clone, don't forget to update the Vagrant Dokku install.
# update vagrant dokku install from local git clone make copyfiles # build a specific plugin make go-build-plugin copyplugin PLUGIN_NAME=apps
Additionally you may run a specific app deployment tests with a target similar to:
For a full list of test make targets check out
tests.mk in the root of the Dokku repository.
When working on a particular plugin, it may be useful to run only a particular test suite. This can be done by specifying the test suite path:
It is also possible to target multiple test suites at a time.
bats tests/unit/10_apps.bats tests/unit/10_certs.bats
In order to increase testing velocity, a wrapper script around Bats is available that can be used to run a single test case within a suite.
Tests within a suite may be listed by specifying the suite as a parameter to
A single test can be specified via the
--filter argument. The tests are selected via regex match, and all matches are executed.
bats --filter clone tests/unit/10_apps.bats