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 ShouldPublishUpdatedAfterUpdatingPrices()
{
var eventAggregator = new MockPriceUpdatedEventAggregator();
using (var marketFeed = new TestableMarketFeedService(eventAggregator))
{
marketFeed.InvokeUpdatePrices();
}
Assert.IsTrue(eventAggregator.MockMarketPriceUpdatedEvent.PublishCalled);
}
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"]);
}