public void FuzzyTest()
{
var rnd = new Random();
var variations = new[]
{
new {
Size = 10,
Add = 0,
ShouldBeCount = 0,
DeletedCount = 0,
},
new {
Size = 10,
Add = 5,
ShouldBeCount = 5,
DeletedCount = 0,
},
new {
Size = 10,
Add = 10,
ShouldBeCount = 10,
DeletedCount = 0,
},
new {
Size = 10,
Add = 11,
ShouldBeCount = 10,
DeletedCount = 1,
},
new {
Size = 10,
Add = 15,
ShouldBeCount = 10,
DeletedCount = 5,
},
new {
Size = 20,
Add = 55,
ShouldBeCount = 20,
DeletedCount = 55 - 20,
},
new {
Size = 100,
Add = 500,
ShouldBeCount = 100,
DeletedCount = 500 - 100,
},
};
foreach (var test in variations)
{
LruList <CacheItem> list = new LruList <CacheItem>(test.Size);
var inputList = new List <int>(Enumerable.Range(0, test.Add).Select(x => rnd.Next(0, Math.Min(test.Add, test.Add / 4))));
foreach (var index in inputList)
{
list.Add(new CacheItem(index));
}
list.Count.Should().Be(test.ShouldBeCount);
list.DumpCount.Should().Be(test.DeletedCount);
var itemList = new List <CacheItem>(list.OrderBy(x => x.Value));
itemList.Count.Should().Be(test.ShouldBeCount);
inputList
.Skip(test.DeletedCount)
.OrderBy(x => x)
.Zip(itemList, (f, s) => new { f, s })
.All(x => x.f == x.s.Value)
.Should().BeTrue();
}
}
public void SizeTests()
{
var variations = new[]
{
new {
Size = 10,
Add = 0,
ShouldBeCount = 0,
DeletedCount = 0,
},
new {
Size = 10,
Add = 5,
ShouldBeCount = 5,
DeletedCount = 0,
},
new {
Size = 10,
Add = 10,
ShouldBeCount = 10,
DeletedCount = 0,
},
new {
Size = 10,
Add = 11,
ShouldBeCount = 10,
DeletedCount = 1,
},
new {
Size = 10,
Add = 15,
ShouldBeCount = 10,
DeletedCount = 5,
},
new {
Size = 20,
Add = 55,
ShouldBeCount = 20,
DeletedCount = 55 - 20,
},
new {
Size = 100,
Add = 500,
ShouldBeCount = 100,
DeletedCount = 500 - 100,
},
};
foreach (var test in variations)
{
LruList <CacheItem> list = new LruList <CacheItem>(test.Size);
foreach (var index in Enumerable.Range(0, test.Add))
{
list.Add(new CacheItem(index));
}
list.Count.Should().Be(test.ShouldBeCount);
list.DumpCount.Should().Be(test.DeletedCount);
var itemList = new List <CacheItem>(list.OrderBy(x => x.Value));
itemList.Count.Should().Be(test.ShouldBeCount);
int start = Math.Max(test.Add - test.Size, 0);
int size = Math.Min(test.Add, test.Size);
itemList.Zip(Enumerable.Range(start, size), (f, s) => new { f = f, s = s })
.All(x => x.f.Value == x.s)
.Should().BeTrue();
}
}