slatedgtk/tests/SlatedGameToolkit.Framework.Tests/Utilities/Collections/Caching/LRUCacheTests.cs

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using NUnit.Framework;
using SlatedGameToolkit.Framework.Utilities.Collections;
namespace SlatedGameToolkit.Framework.Tests.Utilities.Collections.Caching
{
public class LRUCacheTests
{
[SetUp]
public void Setup()
{
}
[Test]
public void SizeLimitTest()
{
LRUCache<int, int> cache = new LRUCache<int, int>(16);
for (int i = 0; i < 32; i++) {
cache.Set(i, i);
}
Assert.AreEqual(16, cache.Count);
}
[Test]
public void ResizeLimitTest() {
LRUCache<int, int> cache = new LRUCache<int, int>(16);
for (int i = 0; i < 32; i++) {
cache.Set(i, i);
}
cache.MaxLength = 64;
for (int i = 32; i < 64; i++) {
cache.Set(i, i);
}
Assert.AreEqual(48, cache.Count);
Assert.AreEqual(63, cache[63]);
}
[Test]
public void LeastUsedTest() {
LRUCache<int, int> cache = new LRUCache<int, int>(4);
for (int i = 0; i < cache.MaxLength; i++) {
cache[i] = i;
}
int used = cache[0];
Assert.AreEqual(0, used);
cache[4] = 4;
Assert.IsFalse(cache.ContainsKey(1));
cache[2] = 2;
cache[5] = 5;
Assert.IsTrue(cache.ContainsKey(2));
}
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[Test]
public void ComputeIfNonexistentTest() {
LRUCache<int, int> cache = new LRUCache<int, int>(4);
for (int i = 0; i < cache.MaxLength; i++) {
cache.ComputeIfNonExistent(i, (a) => a);
}
}
[Test]
public void ComputeIfNonexistentTestExists() {
LRUCache<int, int> cache = new LRUCache<int, int>(4);
for (int i = 0; i < cache.MaxLength; i++) {
cache.ComputeIfNonExistent(i, (a) => a);
}
for (int i = 0; i < cache.MaxLength; i++) {
Assert.AreEqual(i, cache.ComputeIfNonExistent(i, (a) => -a));
}
}
}
}