public async Task <List <Order> > AddOrders(List <Watcher> watchers)
{
// Start watch
var stopwatch = new Stopwatch();
stopwatch.Start();
// Grab watchers willing to buy or sell
watchers = watchers.Where(WatcherExpression.WatcherBuyingOrSelling().Compile()).ToList();
// Build new orders
var newOrders = OrderBuilder.BuildNewOrders(watchers);
// Add
_mainDbContext.Orders.AddRange(newOrders);
// Save
await _mainDbContext.SaveChangesAsync();
// Stop watch
stopwatch.Stop();
// Log
_logger.LogInformation("{@Event}, {@Count}, {@ExecutionTime}", "OrdersAdded", newOrders.Count, stopwatch.Elapsed.TotalSeconds);
// Return
return(newOrders);
}
public void Test_WatcherBuyingOrSelling()
{
// Arrange
var watchersBuyingAndSelling = FakeWatcher.GetWatchersBuyingAndSelling();
// Act
var filter = watchersBuyingAndSelling.Where(WatcherExpression.WatcherBuyingOrSelling().Compile()).ToList();
// Assert
Assert.AreEqual(watchersBuyingAndSelling.Count, filter.Count);
}