public async Task Saving_should_save_the_assets_till_next_load()
{
var viewModel = new MainViewModel();
await viewModel.Load();
viewModel.NewAssetSymbol = "MSFT";
viewModel.NewAssetAmount = 100;
await viewModel.AddAsset();
await viewModel.Save();
viewModel.NewAssetSymbol = "AAPL";
viewModel.NewAssetAmount = 10;
await viewModel.AddAsset();
await viewModel.Load();
viewModel.Portfolio.Assets.Should().BeEquivalentTo(new Asset(new Symbol("MSFT"), 100));
}
public async Task Adding_invalid_asset_should_set_error_message()
{
var viewModel = new MainViewModel();
await viewModel.Load();
viewModel.ErrorMessage.Should().BeNull();
using (IMonitor <MainViewModel> viewModelMonitored = viewModel.Monitor())
{
viewModel.NewAssetSymbol = "MSFT";
viewModel.NewAssetAmount = -10;
await viewModel.AddAsset();
viewModelMonitored.Should().RaisePropertyChangeFor(vm => vm.ErrorMessage);
viewModel.ErrorMessage.Should().NotBeNull();
}
}
public async Task Adding_an_asset_should_change_the_portfolio_assets_and_fire_property_changed_event()
{
// ReSharper disable once ConvertToLocalFunction
QuoteLoaderDelegate quoteLoaderPrice100 = symbols => Task.FromResult(symbols.Select(symbol => new Quote(symbol, 100)));
var viewModel = new MainViewModel(new PortfolioWithValue(quoteLoaderPrice100));
await viewModel.Load();
using (IMonitor <MainViewModel> viewModelMonitored = viewModel.Monitor())
{
viewModel.NewAssetSymbol = "MSFT";
viewModel.NewAssetAmount = 100;
await viewModel.AddAsset();
viewModelMonitored.Should().RaisePropertyChangeFor(vm => vm.PortfolioDescription);
viewModel.Portfolio.Assets.Should().BeEquivalentTo(new Asset(new Symbol("MSFT"), 100));
viewModelMonitored.Should().RaisePropertyChangeFor(vm => vm.PortfolioValueDescription);
viewModel.TotalValue.Should().Be(10000);
}
}