Parser tests can be run either via PHPUnit or by using the standalone
parserTests.php in this directory. The standalone version provides more
options.

To run parser tests via PHPUnit:

 $ cd tests/phpunit
 ./phpunit.php --testsuite parsertests

You can optionally filter by title using --filter, e.g.

 ./phpunit.php --testsuite parsertests --filter="T6400"
