public void ShouldUpdatePricesWithin5Points()
{
using (var marketFeed = new TestableMarketFeedService(new MockPriceUpdatedEventAggregator()))
{
decimal originalPrice = marketFeed.GetPrice("STOCK0");
marketFeed.InvokeUpdatePrices();
Assert.IsTrue(Math.Abs(marketFeed.GetPrice("STOCK0") - originalPrice) <= 5);
}
}
public void CanGetPriceAndVolumeFromMarketFeed()
{
using (var marketFeed = new TestableMarketFeedService(new MockPriceUpdatedEventAggregator()))
{
marketFeed.TestUpdatePrice("STOCK0", 40.00m, 1234);
Assert.AreEqual <decimal>(40.00m, marketFeed.GetPrice("STOCK0"));
Assert.AreEqual <long>(1234, marketFeed.GetVolume("STOCK0"));
}
}
public void PublishedEventContainsTheUpdatedPriceList()
{
var eventAgregator = new MockPriceUpdatedEventAggregator();
var marketFeed = new TestableMarketFeedService(eventAgregator);
Assert.IsTrue(marketFeed.SymbolExists("STOCK0"));
marketFeed.InvokeUpdatePrices();
Assert.IsTrue(eventAgregator.MockMarketPriceUpdatedEvent.PublishCalled);
var payload = eventAgregator.MockMarketPriceUpdatedEvent.PublishArgumentPayload;
Assert.IsNotNull(payload);
Assert.IsTrue(payload.ContainsKey("STOCK0"));
Assert.AreEqual(marketFeed.GetPrice("STOCK0"), payload["STOCK0"]);
}