lessphp uses PHPUnit for its tests

• InputTest.php iterates through all the less files in inputs/, compiles them, then compares the result with the respective file in outputs/.

• ApiTest.php tests the behavior of lessphp's public API methods.

• ErrorHandlingTest.php tests that lessphp throws appropriate errors when given invalid LESS as input.

From the root you can run make to run all the tests.

Tests found in inputs_lessjs are extracted directly from less.js. The following license applies to those tests: https://github.com/less/less.js/blob/master/LICENSE

Clones twitter bootsrap, compiles it with lessc and lessphp, cleans up results with sort.php, and outputs diff. To run it, you need to have git and lessc installed.