Unit Testing with Fat-Free-Framework

Is there a way to use PHPUnit where I have a test folder with indexTest.php inside that tests routes in my index.php file?

The fat-free guide gives snippets of code for mocking route requests and POSTS. I have only managed to get such a test to work if I generate the route directly in my test file with whatever functionality in it.

What I would like is to mock a route with tokens, allow it to run from a route in index.php and through the controller and test f3 variables that should be set by running the route.

<?php

class indexTest extends \PHPUnit_Framework_TestCase
{
    public function test()
    {
        $f3 = Base::instance();
// Don't write to STDOUT
        $f3->set('QUIET', true);
        $f3->route('GET /path', function(){ echo 'TEXT'; });

        $this->assertNull($f3->mock('GET /path'));
        $this->assertSame('TEXT', $f3->get('RESPONSE'));

        $f3->route('GET /verify/@answer/@value',
            function($f3, $params){
                $errors = array();

                $answer = $params['answer'];
                $value = $params['value'];

                $prefix = substr($answer, 0, 3);  //pre, ans, pos
                $id = (int)substr($answer, 3);      //question id number (1, 2, 3, 4)
//$value is the input value from user

                $result = check_id($prefix, $id, $value);

                if($result !== true){
                    $errors[] = $result;
                }
                $f3->set('errors', $errors);
                return $errors;
            });

        function check_id($prefix, $id, $value)
        {
            if($prefix == 'pre' || $prefix == 'pos'){

                if($value <= 0 || $value > 180 || $value === NULL){
                    echo 'The input value of ' . $prefix . $id . ' question was out of bounds';
                    return 'The input value of ' . $prefix . $id . ' question was out of bounds';
                }else{
                    return true;
                }

            }else if($prefix == 'ans'){

                if($value < 0 || $value > 10 || $value === NULL){
                    echo 'The value of quiz ans' + $id + ' was out of bounds';
                    return 'The value of quiz ans' + $id + ' was out of bounds';
                }else{
                    return true;
                }

            }else {
                return 'The prefix does not match';
            }
        }

        $this->assertNotNull($f3->mock('GET /verify/ans1/8'));
        $this->assertEmpty($f3->get('RESPONSE')[0]);

        $this->assertNotNull($f3->mock('GET /verify/dsk4/6'));
        $this->assertSame('6', $f3->get('PARAMS.value'));
        $this->assertSame('dsk4', $f3->get('PARAMS.answer'));
        $this->assertEmpty($f3->get('RESPONSE')[0]);

        $this->assertNotNull($f3->mock('GET /verify/pre4/250'));
        $this->assertSame('The input value of pre4 question was out of bounds', $f3->get('errors')[0]);
        $this->assertNotSame('pre4', $f3->get('PARAMS.answer'));

        $f3->set('QUIET',FALSE); // allow test results to be shown later

        $f3->clear('ERROR');  // clear any errors
    }
}

I'd prefer not to declare the entire route like this, maybe I am entirely wrong and this is not possible? The above code works running vendor/bin/phpunit. Relative examples and tutorials are difficult to find on this.