public void GetFromEmptyCacheReturnsEmptyByteBuffer()
{
using (var fileCollection = new InMemoryFileCollection())
using (var cache = new DiskChunkCache(fileCollection, 20, 1000))
{
Assert.AreEqual(0, cache.Get(CalcHash(new byte[] { 0 })).Result.Length);
}
}
public void GettingContentMakesItStayLongerDecreasingRate()
{
using (var fileCollection = new InMemoryFileCollection())
{
const int cacheCapacity = 50000;
using (var cache = new DiskChunkCache(fileCollection, 20, cacheCapacity))
{
for (var i = 0; i < 80; i++)
{
Put(cache, i);
for (var j = 0; j < 79 - i; j++)
Get(cache, i);
Assert.LessOrEqual(fileCollection.Enumerate().Sum(f => (long)f.GetSize()), cacheCapacity);
}
Console.WriteLine(cache.CalcStats());
Assert.True(Get(cache, 0));
Assert.False(Get(cache, 60));
}
}
}
public void AccessEveryTenthTenTimesMoreMakesItStay()
{
using (var fileCollection = new InMemoryFileCollection())
{
const int cacheCapacity = 50000;
using (var cache = new DiskChunkCache(fileCollection, 20, cacheCapacity))
{
for (var i = 0; i < 46; i++)
{
Put(cache, i);
for (var j = 0; j < (i % 5 == 0 ? 10 + i : 1); j++)
Get(cache, i);
if (i==42) Thread.Sleep(500);
Assert.LessOrEqual(fileCollection.Enumerate().Sum(f => (long)f.GetSize()), cacheCapacity);
}
Console.WriteLine(cache.CalcStats());
Assert.True(Get(cache, 0));
Assert.False(Get(cache, 1));
}
}
}
public void WhatIPutICanGet()
{
using (var fileCollection = new InMemoryFileCollection())
using (var cache = new DiskChunkCache(fileCollection, 20, 1000))
{
cache.Put(CalcHash(new byte[] { 0 }), ByteBuffer.NewAsync(new byte[] { 1 }));
Assert.AreEqual(new byte[] { 1 }, cache.Get(CalcHash(new byte[] { 0 })).Result.ToByteArray());
}
}
public void SizeDoesNotGrowOverLimit()
{
using (var fileCollection = new InMemoryFileCollection())
{
const int cacheCapacity = 50000;
using (var cache = new DiskChunkCache(fileCollection, 20, cacheCapacity))
{
for (var i = 0; i < 80; i++)
{
Put(cache, i);
Assert.LessOrEqual(fileCollection.Enumerate().Sum(f => (long)f.GetSize()), cacheCapacity);
}
}
}
}
public void ItRemebersContentAfterReopen()
{
using (var fileCollection = new InMemoryFileCollection())
{
using (var cache = new DiskChunkCache(fileCollection, 20, 1000))
{
cache.Put(CalcHash(new byte[] { 0 }), ByteBuffer.NewAsync(new byte[] { 1 }));
}
using (var cache = new DiskChunkCache(fileCollection, 20, 1000))
{
Assert.AreEqual(new byte[] { 1 }, cache.Get(CalcHash(new byte[] { 0 })).Result.ToByteArray());
}
}
}