N98\Magento\Command\Customer\DeleteCommandTest::testValidateInt PHP Method

    public function testValidateInt()
    {
        $refObject = new \ReflectionObject($this->command);
        $method = $refObject->getMethod('validateInt');
        $method->setAccessible(true);
        $resultValid = $method->invokeArgs($this->command, array('5'));
        $this->assertEquals(5, $resultValid);
        $method->invokeArgs($this->command, array('bad input'));
        // Exception!
    }