Best practices of unittesting methods that contain conditional conditions

public void ExportAccounts()
{
     int emptyAccounts = 0;
     int nonEmptyAccounts = 0;
     int errorous = 0;
     string outputPath = this.GetOutputPath();
     Account[] accounts = this.MyWebserviceAdapter.GetAccounts();
     foreach(Account account in accounts)
     {
        try
        {
          if(account.Amount > 0)
          {
               this.ExportNonEmpty(outputPath, account);
               nonEmptyAccounts++;
          } else {
               this.ExportEmptyAccount(outputPath, account);
               emptyAccounts++;
          }
        } catch(Exception e) {
          logger.error(e);
          errorous++;
        }
     }
     logger.debug(string.Format("{0} empty / {1} non empty / {2} errorous", emptyAccounts, nonEmptyAccounts, errorous));
}