/**
  * Check methods which provide ability to manage errors
  */
 public function testAddRowError()
 {
     $errorCode = 'test_error';
     $errorNum = 1;
     $errorMessage = 'Test error!';
     $this->_model->addMessageTemplate($errorCode, $errorMessage);
     $this->_model->addRowError($errorCode, $errorNum);
     $this->assertEquals(1, $this->_model->getErrorsCount());
     $this->assertEquals(1, $this->_model->getInvalidRowsCount());
     $this->assertArrayHasKey($errorMessage, $this->_model->getErrorMessages());
 }