public void Synchronisation()
{
var outputValues = new Stack <int>();
var errors = new Stack <Exception>();
var completed = false;
var obs = new PushSubject <int>();
var mapped = obs.Filter(i => i > 0);
mapped.Subscribe(outputValues.Push, () => completed = true, errors.Push);
obs.PushValue(0);
Assert.AreEqual(0, outputValues.Count, "no output should be issued");
Assert.IsFalse(completed, "the stream should not be completed");
obs.PushValue(10);
Assert.AreEqual(1, outputValues.Count, "one output should be issued");
Assert.AreEqual(10, outputValues.Peek(), "issued value should match output");
Assert.IsFalse(completed, "the stream should not be completed");
obs.PushValue(11);
Assert.AreEqual(2, outputValues.Count, "two output should be issued");
Assert.AreEqual(11, outputValues.Peek(), "issued value should match output");
Assert.IsFalse(completed, "the stream should not be completed");
obs.Complete();
Assert.IsTrue(completed, "the stream should be completed");
}
public void FilterValues()
{
var inputValues = new[] { -2, -1, 0, 1, 2 };
var outputValues = new List <int>();
var obs = new PushSubject <int>();
var filtered = obs.Filter(i => i > 0);
filtered.Subscribe(outputValues.Add);
foreach (var item in inputValues)
{
obs.PushValue(item);
}
obs.Complete();
Assert.IsTrue(filtered.ToTaskAsync().Wait(5000), "The filtering should complete");
var expected = inputValues.Where(i => i > 0).ToList();
for (int i = 0; i < outputValues.Count; i++)
{
Assert.AreEqual(expected[i], outputValues[i], "all values should match");
}
Assert.AreEqual(expected.Count, outputValues.Count, $"nb items from the output must match the input one");
}
public void FilterWithErrors()
{
var outputValues = new Stack <int>();
var errors = new Stack <Exception>();
var completed = false;
var obs = new PushSubject <int>();
var mapped = obs.Filter(i => 10 / i > 0);
mapped.Subscribe(outputValues.Push, () => completed = true, errors.Push);
obs.PushValue(-10);
Assert.AreEqual(0, outputValues.Count, "no output should be issued");
Assert.IsFalse(completed, "the stream should not be completed");
obs.PushValue(0);
Assert.AreEqual(0, outputValues.Count, "no output should be issued");
Assert.IsFalse(completed, "the stream should not be completed");
Assert.IsInstanceOfType(errors.Peek(), typeof(DivideByZeroException), "a division by zero should be received in the stream");
obs.PushValue(10);
Assert.AreEqual(1, outputValues.Count, "one output should be issued");
Assert.AreEqual(10, outputValues.Peek(), "issued value should match output");
Assert.IsFalse(completed, "the stream should not be completed");
obs.PushValue(9);
Assert.AreEqual(2, outputValues.Count, "two output should be issued");
Assert.AreEqual(9, outputValues.Peek(), "issued value should match output");
Assert.IsFalse(completed, "the stream should not be completed");
obs.PushValue(11);
Assert.AreEqual(2, outputValues.Count, "two output should be issued");
Assert.IsFalse(completed, "the stream should not be completed");
obs.Complete();
Assert.IsTrue(completed, "the stream should be completed");
}