FakeStuff.php

<?php

class FakeStuff
{
    private $faker = null;

    public function __construct()
    {
        $this->faker = Faker\Factory::create('sv_SE');
    }

    public function nameList($num)
    {
        return array_map(function() {
            return $this->faker->name;
        }, range(1, $num));
    }

    public function dateList($num)
    {
        return array_map(function() {
            return $this->faker->date;
        }, range(1, $num));
    }
}

FakeStuffSpec.php

<?php

namespace spec;

use PhpSpec\Exception\Example\FailureException;
use PhpSpec\ObjectBehavior;
use Prophecy\Argument;

function myTitleCase($str)
{
    return mb_strtoupper(mb_substr($str, 0, 1, 'UTF-8'), 'UTF-8') .
        mb_strtolower(mb_substr($str, 1, null, 'UTF-8'), 'UTF-8');
}

class FakeStuffSpec extends ObjectBehavior
{
    // Test methods -----------------------------------------------------------

    public function it_is_initializable()
    {
        $this->shouldHaveType('FakeStuff');
    }

    public function it_lists_names()
    {
        $res = $this->nameList(10);
        $res->shouldHaveCount(10);
        $res->shouldHaveWords(2, 3);
        $res->shouldHaveTitleCase();
    }

    public function it_lists_dates()
    {
        $res = $this->dateList(10);
        $res->shouldHaveCount(10);

    }

    // Test helpers -----------------------------------------------------------

    public function getMatchers()
    {
        return [
            // Check that each element in the $subject array has between $from and $to words.
            'haveWords' => function(array $subject, $from, $to) {
                return array_reduce($subject, function($res, $item) use ($from, $to) {
                    $wc = count(explode(' ', $item));
                    $res = $res && $from <= $wc && $wc <= $to;
                    if (!$res) throw new FailureException("'$item' does not have between $from and $to words");
                    return $res;
                }, true);
            },
            // Check that each element in the $subject array is UTF-8 title case.
            'haveTitleCase' => function(array $subject) {
                return array_reduce($subject, function($res, $item) {
                    return $res && array_reduce(preg_split('/[- ]/', $item), function($res, $item) {
                        $myItem = myTitleCase($item);
                        $res = $res && $item === $myItem;
                        if (!$res) throw new FailureException("'$item' is not '$myItem'");
                        return $res;
                    }, true);
                }, true);
            }
        ];
    }
}