eamonnmcevoy

func(s *Session) DropDatabase(db string) error {
  if(s.session != nil) {
    return s.session.DB(db).DropDatabase()
  }
  return nil
}

eamonnmcevoy

defer func() {
    session.DropDatabase(dbName)
    session.Close()
}()

eamonnmcevoy

using System.Text;
using System;

namespace BigLegacyApplication
{
    internal class ReportGenerator
    {
        public ReportGenerator()
        {
        }

eamonnmcevoy

internal interface IUserService
{
    User GetUser(int userId);
}

internal interface IResultService
{
    string[] GetUserResults(int userId);
}

eamonnmcevoy

private readonly IUserService _userService;
public IUserService userService {
    get {
        if(_userService == null)
            _userService = new UserService();
        return _userService;
    }
    set { _userService = value; }
}

eamonnmcevoy

var mockUserService = new MockUserService();
var mockResultService = new MockResultService();

var resultGenerator = new ResultGenerator();
resultGenerator.userService = mockUserService;
resultGenerator.mockResultService = mockResultService;

eamonnmcevoy

using System.Text;
using System;

namespace BigLegacyApplication
{
    internal class ReportGenerator
    {
        public ReportGenerator(){}

        internal string GetUserReport(int userId)

eamonnmcevoy

public class TesableResultGenerator : ResultGenerator
{
  private IUserService _userService;
  private IResultService _resultService;
  private DateTime _dateTime;
  
  public TestableResultGenerator(IUserService userService, IResultService resultService, DateTime dateTime) 
    : base() {
    _userService = userService;
    _resultService = resultService;

eamonnmcevoy

var mockUserService = new MockUserService();
var mockResultService = new MockResultService();
var testTime = new DateTime(1,1,2000);

var resultGenerator = new ResultGenerator(mockUserService, mockResultService, testTime);

eamonnmcevoy

package root

type Hash interface {
	Generate(s string) (string, error)
	Compare(hash string, s string) error
}