/**
  * @param $data
  * @param $expected
  *
  * @dataProvider validateDataProvider
  */
 public function testValidate($data, $expected)
 {
     $this->_config->expects($this->exactly(3))->method('getAttribute')->will($this->returnValue($this->attributeCustomerMock));
     $this->attributeCustomerMock->expects($this->exactly(3))->method('getIsRequired')->will($this->returnValue(true));
     $this->_model->setData($data);
     $this->assertEquals($expected, $this->_model->validate());
 }