public function testValidateShouldReturnFalseForInvalidArguments()
{
$filterRuleMock = $this->getMockForAbstractClass(AbstractFilterRule::class);
$filterRuleMock->expects($this->any())->method('validateClean')->will($this->returnValue(true));
$this->assertFalse($filterRuleMock->validate(''));
$this->assertFalse($filterRuleMock->validate([]));
}