public async Task Predicate_Enumerable_PredicateError()
{
var list = new List <int> {
1, 2, 3, 4, 5
};
var enumerable = new TestEnumerable <int>(list);
var predicate = new TestPredicate <int>(x => x < 10);
var predicateError = new TestPredicate <int>(x => x < 10, x => x > 2);
try
{
await enumerable.WhereAsync(x => predicate.Predicate(x)).Where(x => predicateError.Predicate(x)).ToList();
throw new Exception("Oops!");
}
catch (Exception ex)
{
// MUST throw an error
Assert.AreEqual("TestPredicate;ErrorPredicate;Value=3", ex.Message);
// MUST have 2 iterations for enumerable
Assert.AreEqual(2, enumerable.CurrentIndex);
// MUST have 3 iterations for predicate
Assert.AreEqual(3, predicate.Count);
// MUST have 3 iterations for predicateError
Assert.AreEqual(3, predicateError.Count);
}
}
public static void Test()
{
var rawPool = new BufferPool();
for (int i = 3; i < 7; ++i)
{
rawPool.EnsureCapacityForPower(1 << 19, i);
}
var bufferPool = rawPool.SpecializeFor <int>();
var random = new Random(5);
const int listCount = 1000;
var lists = new QuickList <int, Buffer <int> > [listCount];
for (int i = 0; i < 1000; ++i)
{
QuickList <int, Buffer <int> > .Create(bufferPool, 0 + random.Next(9), out lists[i]);
ref var list = ref lists[i];
const int anchorSize = 128;
for (int j = 0; j < 1000; ++j)
{
var removeProbability = 0.5f + 0.5f * (list.Count - anchorSize) / anchorSize;
var p = random.NextDouble();
if (p < removeProbability)
{
Debug.Assert(list.Count > 0);
//Note that adds can invalidate the start.
if (p < removeProbability * 0.5)
{
//Remove an element that is actually present.
var toRemoveIndex = random.Next(list.Count);
var predicate = new TestPredicate {
ToCompare = list[toRemoveIndex]
};
var removed = list.FastRemove(ref predicate);
Debug.Assert(removed, "If we selected an element from the list, it should be removable.");
}
else
{
var toRemove = -(1 + random.Next(16));
var predicate = new TestPredicate {
ToCompare = toRemove
};
var removed = list.FastRemove(ref predicate);
Debug.Assert(!removed, "Shouldn't be able to remove things that were never added!");
}
}
else
{
var toAdd = random.Next(256);
list.Add(toAdd, bufferPool);
}
}
}
