Redmine offers some rake tasks to facilitate interacting with a plugin's test suite. These tasks are shown in the following command:

$ rake -T | grep plugins:test
rake redmine:plugins:test
rake redmine:plugins:test:functionals
rake redmine:plugins:test:integration
rake redmine:plugins:test:units

Running any of these rake tasks will run the tests for all installed plugins. In order to limit the tests for our plugin, we need to provide a NAME environment variable.

$ rake redmine:plugins:test:functionals NAME=redmine_knowledgebase
Run options: 

# Running tests:

..

Finished tests in 0.118963s, 16.8119 tests/s, 16.8119 assertions/s.

2 tests, 2 assertions, 0 failures, 0 errors, 0 skips

The rake tasks for running plugin tests are standard Rake::TestTask instances (http://rake.rubyforge.org/classes/Rake/TestTask.html), so passing options through a TESTOPTS environment variable will work the same as if the parameters were provided directly.

$ rake redmine:plugins:test:functionals...