public async Task AddValidTradeToQueue()
{
var context = Helpers.GetMockContext();
var stateManager = new MockReliableStateManager();
var service = new Fulfillment(context, stateManager);
var ask = new Order("user1", CurrencyPair.GBPUSD, 10, 10);
var bid = new Order("user2", CurrencyPair.GBPUSD, 10, 10);
var settlement = new Order(ask.Pair, bid.Amount, ask.Price);
var request = new TradeRequestModel
{
Ask = ask,
Bid = bid,
Settlement = settlement
};
var tradeId = await service.AddTradeAsync(request);
var expected = new Trade(tradeId, ask, bid, settlement);
var queue = await stateManager.TryGetAsync <IReliableConcurrentQueue <Trade> >(Fulfillment.TradeQueueName);
var actual = (await queue.Value.TryDequeueAsync(new MockTransaction(stateManager, 1))).Value;
Assert.True(expected.Equals(actual));
}
public async Task ThrowIfAskQuantityIsLowerThanBidQuantity()
{
var context = Helpers.GetMockContext();
var stateManager = new MockReliableStateManager();
var service = new Fulfillment(context, stateManager);
var ask = new Order("user1", CurrencyPair.GBPUSD, 5, 10);
var bid = new Order("user2", CurrencyPair.GBPUSD, 100, 10);
var request = new TradeRequestModel
{
Ask = ask,
Bid = bid,
};
await Assert.ThrowsAsync <InvalidTradeRequestException>(() => service.AddTradeAsync(request));
}
public async Task ThrowIfAskValueIsHigherThanBidValue()
{
var context = Helpers.GetMockContext();
var stateManager = new MockReliableStateManager();
var service = new Fulfillment(context, stateManager);
var ask = new Order("user1", CurrencyPair.GBPUSD, 40, 150);
var bid = new Order("user2", CurrencyPair.GBPUSD, 40, 100);
var settlement = new Order(ask.Pair, bid.Amount, ask.Price);
var request = new TradeRequestModel
{
Ask = ask,
Bid = bid,
Settlement = settlement
};
await Assert.ThrowsAsync <InvalidTradeRequestException>(() => service.AddTradeAsync(request));
}
public async Task AddTooManyTradesToQueue()
{
var context = Helpers.GetMockContext();
var stateManager = new MockReliableStateManager();
var service = new Fulfillment(context, stateManager);
var ask = new Order("user1", CurrencyPair.GBPUSD, 10, 10);
var bid = new Order("user2", CurrencyPair.GBPUSD, 10, 10);
var settlement = new Order(ask.Pair, bid.Amount, ask.Price);
var request = new TradeRequestModel
{
Ask = ask,
Bid = bid,
Settlement = settlement
};
await Assert.ThrowsAsync <MaxPendingTradesExceededException>(async() =>
{
for (int i = 0; i < 20; i++)
{
await service.AddTradeAsync(request);
}
});
}
