public function test_string()
{
$count = 2000;
$buckets = array_combine(str_split('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'), array_fill(0, 62, 0));
for ($i = 1; $i <= $count; $i++) {
$len = mt_rand(2, 256);
$str = PHPRandom::getString($len);
$this->assertEquals($len, strlen($str));
$this->assertEquals(true, isset($buckets[$str[0]]));
$buckets[$str[0]]++;
}
$distribution = 0;
foreach ($buckets as $key => $value) {
if ($value > $count / 62 * 0.5) {
$distribution++;
}
if ($value < $count / 62 * 1.5) {
$distribution++;
}
}
$this->assertGreaterThan(62, $distribution);
}
