public CompleteLessonCommandHandler(IMimoDbContext dbContext,
                                     IMapper mapper,
                                     IUserAchievementsUpdater userAchievementsUpdater,
                                     IAchievementTypesToUpdateCalculator achievementTypesCalculator,
                                     IResultValidator <CompleteLessonCommand> completeLessonValidator)
 {
     this.dbContext = dbContext;
     this.mapper    = mapper;
     this.userAchievementsUpdater    = userAchievementsUpdater;
     this.achievementTypesCalculator = achievementTypesCalculator;
     this.completeLessonValidator    = completeLessonValidator;
 }
 public UserAchievementsUpdaterTests()
 {
     updater = new UserAchievementsUpdater();
 }