public async Task PopulateStatsAsync_OddLoggedDays_ComputesCorrectMedian()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var service = new MockTrackerLogService();
service.LoggedDays.Add(new LoggedDay {
Date = new DateTime(2002, 1, 1)
});
service.LoggedDays.Add(new LoggedDay {
Date = new DateTime(2002, 1, 1)
});
service.LoggedDays.Add(new LoggedDay {
Date = new DateTime(2001, 1, 1)
});
service.LoggedDays.Add(new LoggedDay {
Date = new DateTime(2000, 1, 1)
});
service.LoggedDays.Add(new LoggedDay {
Date = new DateTime(2000, 1, 1)
});
var vm = new TrackerLogViewModel(tracker, service, new MockSettingsViewModel());
await vm.PopulateAllDayGroupsAsync();
// act
await vm.PopulateStatsAsync();
// assert
Assert.Equal(1, vm.LoggedDayStats.Median);
}
public EditTrackerLogPage(Tracker tracker) : this()
{
Title = $"Editing {tracker.Name}";
BindingContext = _viewModel = new TrackerLogViewModel(tracker,
logService: App.DependencyContainer.GetInstance <ITrackerLogService>(),
settingsViewModel: App.DependencyContainer.GetInstance <ISettingsViewModel>());
}
public TrackerLogPage(Tracker tracker) : this()
{
_tracker = tracker;
Title = tracker.Name;
BindingContext = _viewModel = new TrackerLogViewModel(tracker,
logService: App.DependencyContainer.GetInstance <ITrackerLogService>(),
settingsViewModel: App.DependencyContainer.GetInstance <ISettingsViewModel>());
SortOptionPicker.SelectedIndex = 0;
SortOptionPicker.SelectedIndexChanged += OnSortChange;
}
public async Task PopulateStatsAsync_ServiceFailure_DoesNotComputeStats()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var vm = new TrackerLogViewModel(tracker, new FailingTrackerLogService(), new MockSettingsViewModel());
// act
await vm.PopulateStatsAsync();
// assert
Assert.Null(vm.LoggedDayStats);
}
public async Task LogDayAsync_AddsToAllDayGroups()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var vm = new TrackerLogViewModel(tracker, new MockTrackerLogService(), new MockSettingsViewModel());
// act
await vm.LogDayAsync();
// assert
Assert.Single(vm.AllDayGroups, group => group.Date == vm.DateToLog);
}
public async Task DeleteLoggedDayAsync_NullDay_DoesNothing()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var vm = new TrackerLogViewModel(tracker, new MockTrackerLogService(), new MockSettingsViewModel());
vm.AllDays.Add(null);
// act
await vm.DeleteLoggedDayAsync(null);
// assert
Assert.Single(vm.AllDays, expected: null);
}
public async Task PopulateStatsAsync_NoLoggedDays_DoesNotComputeStats()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var vm = new TrackerLogViewModel(tracker, new MockTrackerLogService(), new MockSettingsViewModel());
// act
await vm.PopulateStatsAsync();
// assert
Assert.Equal(
JsonConvert.SerializeObject(new LoggedDayStats()),
JsonConvert.SerializeObject(vm.LoggedDayStats));
}
public async Task LogDayAsync_ServiceFailure_SendsMessage()
{
// arrange
var tracker = new Tracker();
var vm = new TrackerLogViewModel(tracker, new FailingTrackerLogService(), new MockSettingsViewModel());
bool messageSent = false;
MessagingCenter.Subscribe <TrackerLogViewModel>(this, TrackerLogViewModel.DatabaseErrorMessage,
sender => messageSent = true);
// act
await vm.LogDayAsync();
// assert
Assert.True(messageSent);
}
public async Task PopulateStatsAsync_NullAllDayGroups_DoesNotComputeStats()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var vm = new TrackerLogViewModel(tracker, new MockTrackerLogService(), new MockSettingsViewModel())
{
AllDayGroups = null
};
// act
await vm.PopulateStatsAsync();
// assert
Assert.Null(vm.LoggedDayStats);
}
public async Task PopulateAllDayGroupsAsync_ServiceFailure_DoesNotChangeState()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var group = new LoggedDayGroup {
Date = DateTime.Now.Date, Count = 2
};
var vm = new TrackerLogViewModel(tracker, new FailingTrackerLogService(), new MockSettingsViewModel());
vm.AllDayGroups.Add(group);
// act
await vm.PopulateAllDayGroupsAsync();
// assert
Assert.Single(vm.AllDayGroups, expected: group);
}
public async Task PopulateAllDaysAsync_ServiceFailure_DoesNotChangeState()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var day = new LoggedDay {
Id = 0, TrackerId = 0
};
var vm = new TrackerLogViewModel(tracker, new FailingTrackerLogService(), new MockSettingsViewModel());
vm.AllDays.Add(day);
// act
await vm.PopulateAllDaysAsync();
// assert
Assert.Single(vm.AllDays, expected: day);
}
public async Task DeleteLoggedDayAsync_ExistingDay_DeletesDay()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var day = new LoggedDay {
Id = 0, TrackerId = 0
};
var service = new MockTrackerLogService();
var vm = new TrackerLogViewModel(tracker, service, new MockSettingsViewModel());
service.LoggedDays.Add(day);
vm.AllDays.Add(day);
// act
await vm.DeleteLoggedDayAsync(day);
// assert
Assert.Empty(vm.AllDays);
Assert.Empty(service.LoggedDays);
}
public async Task DeleteLoggedDayAsync_ServiceFailure_SendsMessageWithDay()
{
// arrange
var tracker = new Tracker {
Id = 0
};
var day = new LoggedDay {
Id = 0, TrackerId = 0
};
var vm = new TrackerLogViewModel(tracker, new FailingTrackerLogService(), new MockSettingsViewModel());
vm.AllDays.Add(day);
LoggedDay sentDay = null;
MessagingCenter.Subscribe <TrackerLogViewModel, LoggedDay>(this, nameof(vm.DeleteLoggedDayCommand),
(sender, loggedDay) => sentDay = loggedDay);
// act
await vm.DeleteLoggedDayAsync(day);
// assert
Assert.Equal(day, sentDay);
}
public TrackerStatsPage(Tracker tracker, TrackerLogViewModel trackerLogViewModel) : this()
{
Title = $"{tracker.Name} stats";
BindingContext = _viewModel = trackerLogViewModel;
}
