public function testValidatorGetUnknown()
{
$data = array('unknown' => 'xxx');
$validators = array('month' => 'digits');
$input = new InputFilter(null, $validators, $data);
$this->assertFalse($input->hasMissing(), 'Expected hasMissing() to return false');
$this->assertFalse($input->hasInvalid(), 'Expected hasInvalid() to return false');
$this->assertTrue($input->hasUnknown(), 'Expected hasUnknown() to retrun true');
$this->assertFalse($input->hasValid(), 'Expected hasValid() to return false');
$unknown = $input->getUnknown();
$this->assertInternalType('array', $unknown);
$this->assertThat($unknown, $this->arrayHasKey('unknown'));
}
