public function testValidData()
 {
     $rawData = array('id' => 42, 'firstname' => 'ManFRED', 'lastname' => 'Mustermann', 'street' => 'Am tESTEN 123', 'postcode' => '54321', 'city' => 'MusterHauSen', 'country' => 'de');
     $expectedValues = array('id' => 42, 'firstname' => 'Manfred', 'lastname' => 'Mustermann', 'street' => 'Am Testen 123', 'postcode' => '54321', 'city' => 'Musterhausen', 'country' => 'de');
     $customerInputFilter = new CustomerInputFilter();
     $customerInputFilter->init();
     $customerInputFilter->setData($rawData);
     $this->assertEquals(true, $customerInputFilter->isValid());
     $this->assertEquals($expectedValues, $customerInputFilter->getValues());
 }