public void TestAtomicInterfaces()
{
SynchronizedDictionary <int, string> data =
new SynchronizedDictionary <int, string>(new Dictionary <int, string>());
data[1] = "a";
AddUpdateValue update = new AddUpdateValue();
Assert.IsFalse(data.AddOrUpdate(1, ref update));
Assert.AreEqual("a", update.OldValue);
Assert.IsFalse(data.AddOrUpdate(2, ref update));
Assert.IsNull(update.OldValue);
Assert.IsFalse(data.TryRemove(1, ref update));
Assert.AreEqual("a", update.OldValue);
Assert.AreEqual(1, data.Count);
Assert.AreEqual("a", data[1]);
update.Value = "b";
Assert.IsTrue(data.AddOrUpdate(1, ref update));
Assert.AreEqual("a", update.OldValue);
Assert.IsTrue(data.AddOrUpdate(2, ref update));
Assert.IsNull(update.OldValue);
Assert.AreEqual(2, data.Count);
Assert.AreEqual("b", data[1]);
Assert.AreEqual("b", data[2]);
Assert.IsTrue(data.TryRemove(1, ref update));
Assert.AreEqual("b", update.OldValue);
Assert.IsTrue(data.TryRemove(2, ref update));
Assert.AreEqual("b", update.OldValue);
Assert.AreEqual(0, data.Count);
}
public void TestTryRoutines()
{
SynchronizedDictionary <int, string> data =
new SynchronizedDictionary <int, string>(new Dictionary <int, string>());
Assert.IsTrue(data.TryAdd(1, "a"));
Assert.IsFalse(data.TryAdd(1, "a"));
Assert.IsTrue(data.TryUpdate(1, "a"));
Assert.IsTrue(data.TryUpdate(1, "c"));
Assert.IsTrue(data.TryUpdate(1, "d", "c"));
Assert.IsFalse(data.TryUpdate(1, "f", "c"));
Assert.AreEqual("d", data[1]);
Assert.IsTrue(data.TryUpdate(1, "a", data[1]));
Assert.AreEqual("a", data[1]);
Assert.IsFalse(data.TryUpdate(2, "b"));
string val;
Assert.IsTrue(data.TryRemove(1, out val) && val == "a");
Assert.IsFalse(data.TryRemove(2, out val));
Assert.AreNotEqual(val, "a");
Assert.IsFalse(data.TryUpdate(1, (k, x) => x.ToUpper()));
data[1] = "a";
data[1] = "b";
Assert.IsTrue(data.TryUpdate(1, (k, x) => x.ToUpper()));
Assert.AreEqual("B", data[1]);
}
public void TestAtomicAddOrUpdate()
{
SynchronizedDictionary <int, string> data =
new SynchronizedDictionary <int, string>(new Dictionary <int, string>());
int[] counter = new int[] { -1 };
for (int i = 0; i < 100; i++)
{
data.AddOrUpdate(i, (k) => (++counter[0]).ToString(), (k, v) => { throw new InvalidOperationException(); });
}
for (int i = 0; i < 100; i++)
{
Assert.AreEqual((i & 1) == 1, data.TryRemove(i, (k, v) => (int.Parse(v) & 1) == 1));
}
for (int i = 0; i < 100; i++)
{
data.AddOrUpdate(i, (k) => (++counter[0]).ToString(), (k, v) => (++counter[0]).ToString());
}
Assert.AreEqual(100, data.Count);
Assert.AreEqual(200, counter[0] + 1);
for (int i = 0; i < 100; i++)
{
Assert.IsTrue(data.TryRemove(i, (k, v) => int.Parse(v) - 100 == i));
}
Assert.AreEqual(0, data.Count);
}
