public void TestElementClass()
{
var iComp = new IndexSet<TestClassB>(
new TestClassB[] {
new TestClassB() { T = 10 },
new TestClassB() { T = 20 },
new TestClassB() { T = 30 },
new TestClassB() { T = 40 }
},
new IndexSpecification<TestClassB>().Add(q => q.T)); ;
Assert.AreEqual(4, iComp.Where(c => c.T2 == 0).Count());
bool failed = false;
try
{
iComp.WhereIndexed(c => c.T2 == 0).Count();
}
catch
{
failed = true;
}
Assert.IsTrue(failed);
}
public void PerformanceComparisonTest()
{
Stopwatch globalSw = new Stopwatch();
globalSw.Start();
List <SimpleClass> someItems = new List <SimpleClass> {
new SimpleClass {
Name = "Jason Jarett", Age = 25, FavoriteColor = Color.Aqua
},
new SimpleClass {
Name = "Aaron Erickson", Age = 37, FavoriteColor = Color.Green
},
new SimpleClass {
Name = "Erin Erickson", Age = 34, FavoriteColor = Color.Green
},
new SimpleClass {
Name = "Adriana Erickson", Age = 13, FavoriteColor = Color.Aqua
},
};
var rnd = new Random();
var moreItems = Enumerable.Range(1, 100000).Select(r => new SimpleClass()
{
Name = "AdrBla" + rnd.NextDouble(), Age = rnd.Next(0, 100), FavoriteColor = new Color(rnd.Next(0, 0xFFFFFF))
});
someItems.AddRange(moreItems);
someItems = someItems.OrderBy(r => rnd.Next()).ToList(); // Shuffle items
Assert.AreEqual(100004, someItems.Count());
Console.WriteLine("Arrange test list : " + globalSw.ElapsedMilliseconds);
globalSw.Reset();
var indexSpec = IndexSpecification <SimpleClass> .Build()
.With(person => person.Name)
.With(person => person.Age);
var theIndexSet = new IndexSet <SimpleClass>(someItems, indexSpec);
theIndexSet.UnableToUseIndex += (e, args) =>
{
throw new Exception(args.Message);
};
Console.WriteLine("Define index : " + globalSw.ElapsedMilliseconds);
globalSw.Reset();
Stopwatch sw = new Stopwatch();
// Search a 1000 times in index
globalSw.Start();
for (int i = 0; i < 1000; i++)
{
sw.Start();
var inIndexSearch = theIndexSet.Where(item => item.Age == 13 && item.Name == "Adriana Erickson");
Assert.AreEqual(1, inIndexSearch.Count());
sw.Stop();
if (i == 0)
{
Console.WriteLine("In index (first iteration) : " + sw.ElapsedMilliseconds);
}
if (i == 1)
{
Console.WriteLine("In index (second iteration) : " + sw.ElapsedMilliseconds);
}
//Console.WriteLine("In index : " + sw.ElapsedMilliseconds);
sw.Reset();
}
Console.WriteLine("In index global time : " + globalSw.ElapsedMilliseconds);
globalSw.Reset();
sw.Reset();
// Search a 1000 times in list
globalSw.Start();
for (int i = 0; i < 1000; i++)
{
sw.Start();
var inListSearch = someItems.Where(item => item.Age == 13 && item.Name == "Adriana Erickson");
Assert.AreEqual(1, inListSearch.Count());
sw.Stop();
//Console.WriteLine("In list : " + sw.ElapsedMilliseconds);
sw.Reset();
}
Console.WriteLine("In list global time : " + globalSw.ElapsedMilliseconds);
}