public void Cache_should_be_updated_with_the_latest_resolved()
{
var localClock = new AtomicReference<long>(0);
var cache = new SimpleDnsCacheTestDouble(localClock);
var cacheEntryOne = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
var cacheEntryTwo = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
long ttl = 500;
cache.Put(cacheEntryOne, ttl);
cache.Cached("test.local").ShouldBe(cacheEntryOne);
cache.Put(cacheEntryTwo, ttl);
cache.Cached("test.local").ShouldBe(cacheEntryTwo);
}
public void Cache_should_be_updated_with_the_latest_resolved()
{
var localClock = new AtomicReference <long>(0);
var cache = new SimpleDnsCacheTestDouble(localClock);
var cacheEntryOne = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
var cacheEntryTwo = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
long ttl = 500;
cache.Put(cacheEntryOne, ttl);
cache.Cached("test.local").ShouldBe(cacheEntryOne);
cache.Put(cacheEntryTwo, ttl);
cache.Cached("test.local").ShouldBe(cacheEntryTwo);
}
public void Cache_should_not_reply_with_expired_but_not_yet_swept_out_entries()
{
var localClock = new AtomicReference <long>(0);
var cache = new SimpleDnsCacheTestDouble(localClock);
var cacheEntry = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
cache.Put(cacheEntry, 5000);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(0, 4999);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(4999, 5000);
cache.Cached("test.local").ShouldBe(null);
}
public void Cache_should_not_reply_with_expired_but_not_yet_swept_out_entries()
{
var localClock = new AtomicReference<long>(0);
var cache = new SimpleDnsCacheTestDouble(localClock);
var cacheEntry = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
cache.Put(cacheEntry, 5000);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(0, 4999);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(4999, 5000);
cache.Cached("test.local").ShouldBe(null);
}
public void Cache_should_sweep_out_expired_entries_on_cleanup()
{
var localClock = new AtomicReference <long>(0);
var cache = new SimpleDnsCacheTestDouble(localClock);
var cacheEntry = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
cache.Put(cacheEntry, 5000);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(0, 5000);
cache.Cached("test.local").ShouldBe(null);
localClock.CompareAndSet(5000, 0);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(0, 5000);
cache.CleanUp();
cache.Cached("test.local").ShouldBe(null);
localClock.CompareAndSet(5000, 0);
cache.Cached("test.local").ShouldBe(null);
}
public void Cache_should_sweep_out_expired_entries_on_cleanup()
{
var localClock = new AtomicReference<long>(0);
var cache = new SimpleDnsCacheTestDouble(localClock);
var cacheEntry = Dns.Resolved.Create("test.local", System.Net.Dns.GetHostEntry("127.0.0.1").AddressList);
cache.Put(cacheEntry, 5000);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(0, 5000);
cache.Cached("test.local").ShouldBe(null);
localClock.CompareAndSet(5000, 0);
cache.Cached("test.local").ShouldBe(cacheEntry);
localClock.CompareAndSet(0, 5000);
cache.CleanUp();
cache.Cached("test.local").ShouldBe(null);
localClock.CompareAndSet(5000, 0);
cache.Cached("test.local").ShouldBe(null);
}