public void AddTest()
{
int testCollectionCount = 10;
int itemsPerCollection = 200_000;
var sourceCollections = new List <List <int> >();
// Use a fixed seed for consistency in results
Random random = new Random(1);
// Create 10 test sets
for (int collection = 0; collection < testCollectionCount; ++collection)
{
List <int> sourceCollection = new List <int>();
for (int item = 0; item < itemsPerCollection; ++item)
{
// Ensure we have some duplicates by picking a random number
// less than half the number of items.
sourceCollection.Add(random.Next(itemsPerCollection / 2));
}
sourceCollections.Add(sourceCollection);
}
var testCollection = new ConcurrentObservableDictionary <int, int>();
// Create test subject
// Populate test subject
sourceCollections.AsParallel().ForAll(collection =>
{
foreach (var item in collection)
{
testCollection[item] = item;
}
});
bool keyMatchesValue = testCollection
.All(kv => kv.Key == kv.Value);
Assert.IsTrue(keyMatchesValue, "Keys match values");
var sorted =
sourceCollections
.SelectMany(x => x)
.Distinct()
.OrderBy(x => x)
.ToList();
var sortedFromTest =
testCollection
.OrderBy(x => x.Key)
.ToList();
Assert.IsTrue(sorted.Count == sortedFromTest.Count, "Right number of items");
var allItemsPresent =
sorted
.Zip(sortedFromTest, (a, b) => a == b.Key)
.All(a => a);
Assert.IsTrue(allItemsPresent, "All items present");
}