public void SymbolExistsWorksAsExpected()
{
using (var marketFeed = new MarketFeedService(new MockPriceUpdatedEventAggregator()))
{
Assert.IsTrue(marketFeed.SymbolExists("STOCK0"));
Assert.IsFalse(marketFeed.SymbolExists("NONEXISTANT"));
}
}
public void GetPriceOfNonExistingSymbolThrows()
{
using (var marketFeed = new MarketFeedService(new MockPriceUpdatedEventAggregator()))
{
try
{
marketFeed.GetPrice("NONEXISTANT");
Assert.Fail("No exception thrown");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(ArgumentException));
Assert.IsTrue(ex.Message.Contains("Symbol does not exist in market feed."));
}
}
}
