public void FactoryExceptionTests()
{
var sc = new SlidingCache(TimeSpan.FromHours(1));
Action act = () => sc.AddOrGetExisting <string>("test", () => { throw new InvalidOperationException("Boom!"); });
act.ShouldThrow <LazyInitializationException>();
sc.AddOrGetExisting("test", () => "New Value").Should().Be("New Value");
}
public async Task MultithreadedCachingTests()
{
var sc = new SlidingCache(TimeSpan.FromMinutes(1));
//Although 10 threads will ask the same key all at once with different value factory,
//they should all get the exact same value.
Guid[] values = await Task.WhenAll(Enumerable.Range(1, 10).Select(i => Task.Run(() => GetCachedValue(sc)))).ConfigureAwait(false);
values.Distinct().Should().HaveCount(1);
}
public void BasicCachingTests()
{
var sc = new SlidingCache(TimeSpan.FromMilliseconds(50));
sc.Should().NotBeNull();
sc.AddOrGetExisting("key1", () => "key1").Should().Be("key1");
sc.AddOrGetExisting("key1", () => "key2").Should().Be("key1");
sc.AddOrGetExisting("key3", () => "key3").Should().Be("key3");
Thread.Sleep(51);
sc.AddOrGetExisting("key1", () => "key2").Should().Be("key2");
}
public void BasicSlidingCachingTests()
{
var sc = new SlidingCache(TimeSpan.FromSeconds(2));
sc.Should().NotBeNull();
sc.AddOrGetExisting("key1", () => "key1");
for (int i = 0; i < 3; i++)
{
sc.AddOrGetExisting("key1", () => "key2").Should().Be("key1");
Thread.Sleep(1000);
}
Thread.Sleep(1050);
sc.AddOrGetExisting("key1", () => "key2").Should().Be("key2");
}
private Task <Guid> GetCachedValue(SlidingCache sc)
{
return(Task.FromResult(sc.AddOrGetExisting("single_key", () => Guid.NewGuid())));
}