public void FlushHitsAsyncTest()
{
var hitCache = new Mock <IHitCacheImplementation>();
var visitorId = visitorDelegate.VisitorId;
visitorDelegate.Config.HitCacheImplementation = hitCache.Object;
var defaultStrategy = new DefaultStrategy(visitorDelegate);
defaultStrategy.FlushHitAsync();
hitCache.Verify(x => x.FlushHits(visitorId), Times.Once());
var error = new Exception("hitsCache error");
hitCache.Setup(x => x.FlushHits(It.IsAny <string>())).Throws(error);
defaultStrategy.FlushHitAsync();
fsLogManagerMock.Verify(x => x.Error(error.Message, "FlushHits"), Times.Once());
}