/// <summary>
/// chekanote: this test demonstrate that the observable returned by "Create" is a cold one
/// 1. "Create" won't run until there is observer subscribed on
/// 2. everytime an observer subscribed, "Create" will be invoked once again
/// 3. everytime an observer subscribed, "Create" will generate and publish newest value with latest seed
/// </summary>
private static void TestGenerate_Create_ColdFeature()
{
GeneratorBase generator = new Generator_Create();
IObservable <int> coldSource = generator.Generate();
Sumer sumer = new Sumer();
int total = sumer.SyncSum(coldSource);
Debug.Assert(total == 6);
total = sumer.SyncSum(coldSource);
Debug.Assert(total == 6);
Debug.Assert(2 == generator.NumInvoke);
// ---------------------- change the seed will affect generated observables
// ---------------------- because this observable ISN'T a concrete sequence, just a factory
// ---------------------- everytime subscribed, it will use the latest seed to generate and publish data
generator.Seed = 100;
total = sumer.SyncSum(coldSource);
Debug.Assert(306 == total);
Debug.Assert(3 == generator.NumInvoke);
Console.WriteLine("consume [{0}] times,data generated [{1}] times", sumer.NumSubscription, generator.NumInvoke);
}
/// <summary>
/// chekanote: this test demonstrate that the observable returned by "Create" is a cold one
/// 1. "Create" won't run until there is observer subscribed on
/// 2. everytime an observer subscribed, "Create" will be invoked once again
/// 3. everytime an observer subscribed, "Create" will generate and publish newest value with latest seed
/// </summary>
private static void TestGenerate_Create_ColdFeature()
{
GeneratorBase generator = new Generator_Create();
IObservable<int> coldSource = generator.Generate();
Sumer sumer = new Sumer();
int total = sumer.SyncSum(coldSource);
Debug.Assert(total == 6);
total = sumer.SyncSum(coldSource);
Debug.Assert(total == 6);
Debug.Assert(2 == generator.NumInvoke);
// ---------------------- change the seed will affect generated observables
// ---------------------- because this observable ISN'T a concrete sequence, just a factory
// ---------------------- everytime subscribed, it will use the latest seed to generate and publish data
generator.Seed = 100;
total = sumer.SyncSum(coldSource);
Debug.Assert(306 == total);
Debug.Assert(3 == generator.NumInvoke);
Console.WriteLine("consume [{0}] times,data generated [{1}] times", sumer.NumSubscription, generator.NumInvoke);
}