public static void can_read_item_from_underlying_cache(Test t)
{
foreach (var key in new[] { 1, 2 })
{
var cache = new ReadThroughCache <int, int>(new ValueIsKey <int, int>(), 3, null);
t.Assert(key, cache[key]);
}
}
public static void get_reads_though(Test t)
{
var source = new HerdValueIsKey <int, int>();
var thp = source.WithThunderingHerdProtection();
var c = new ReadThroughCache <int, int>(thp, 10, null);
t.Assert(1, c[1]);
}
public static void invalidate_removes_item_from_gen0(Test t)
{
var cache = new ReadThroughCache <int, int>(new ValueIsKey <int, int>(), 10, null);
t.Assert(1, cache[1]);
t.Assert(1, cache.Count);
cache.Remove(1);
t.Assert(0, cache.Count);
}
public static void eviction_raises_event_with_evicted_items(Test t)
{
var cache = new ReadThroughCache <int, int>(new ValueIsKey <int, int>(), 10, null);
IReadOnlyDictionary <int, int> evicted = null;
t.Assert(1, cache[1]);
cache.Evicted += (sender, key) => evicted = key;
cache.Clear();
t.Assert(1, evicted.Count);
t.Assert(0, cache.Count);
}
public static void drops_items_in_gen1_when_gen0_is_full(Test t)
{
var cache = new ReadThroughCache <int, int>(new ValueIsKey <int, int>(), 3, null);
for (int i = 1; i <= 7; i++)
{
t.Assert(i, cache[i]);
}
t.Assert(3, cache._gen1.Count);
t.Assert(1, cache._gen0.Count);
}
public static async Task can_read_item_from_underlying_cache(Test t)
{
foreach (var key in new[] { 1, 2 })
{
var cache = new ReadThroughCache <int, int>(new ValueIsKey <int, int>(), 3, null);
var actual = await cache.GetAsync(key);
if (actual != key)
{
t.Error($"Expected {key} but got {actual}");
}
}
}
public static async Task drops_items_in_gen1_when_gen0_is_full(Test t)
{
var cache = new ReadThroughCache <int, int>(new ValueIsKey <int, int>(), 3, null);
for (int i = 1; i <= 7; i++)
{
var actual = await cache.GetAsync(i);
if (actual != i)
{
t.Error($"Expected {i} but got {actual}");
}
}
t.Assert(3, cache._gen1.Count);
t.Assert(1, cache._gen0.Count);
}