public void Only_The_Last_Matching_Handler_Is_Unsubscribed()
{
// Subscribe the same handlers multiple times
var pub = new Publisher();
var calledSubscribers = new List <int>();
var sub1 = new InstanceSubscriber(1, calledSubscribers.Add);
sub1.Subscribe(pub);
sub1.Subscribe(pub);
StaticSubscriber.CallCount = 0;
StaticSubscriber.Subscribe(pub);
StaticSubscriber.Subscribe(pub);
// Make sure they really were subscribed
pub.Raise();
calledSubscribers.Should().Equal(1, 1);
StaticSubscriber.CallCount.Should().Be(2);
// Unsubscribe one instance handler
calledSubscribers.Clear();
sub1.Unsubscribe(pub);
pub.Raise();
//calledSubscribers.Should().Equal(1);
// Unsubscribe one static handler
StaticSubscriber.CallCount = 0;
StaticSubscriber.Unsubscribe(pub);
pub.Raise();
StaticSubscriber.CallCount.Should().Be(1);
// Make sure subscribers are not collected before the end of the test
GC.KeepAlive(sub1);
}
public void Handlers_Can_Be_Unsubscribed()
{
var pub = new Publisher();
var calledSubscribers = new List <int>();
var sub1 = new InstanceSubscriber(1, pub, calledSubscribers.Add);
var sub2 = new InstanceSubscriber(2, pub, calledSubscribers.Add);
StaticSubscriber.FooWasRaised = false;
StaticSubscriber.Subscribe(pub);
// Make sure they really were subscribed
pub.Raise();
calledSubscribers.Should().Equal(1, 2);
StaticSubscriber.FooWasRaised.Should().BeTrue();
calledSubscribers.Clear();
sub1.Unsubscribe(pub);
pub.Raise();
calledSubscribers.Should().Equal(2);
StaticSubscriber.FooWasRaised = false;
StaticSubscriber.Unsubscribe(pub);
pub.Raise();
StaticSubscriber.FooWasRaised.Should().BeFalse();
calledSubscribers.Clear();
sub2.Unsubscribe(pub);
pub.Raise();
calledSubscribers.Should().BeEmpty();
// Make sure subscribers are not collected before the end of the test
GC.KeepAlive(sub1);
GC.KeepAlive(sub2);
}
public void Static_Handlers_Are_Called()
{
var pub = new Publisher();
StaticSubscriber.FooWasRaised = false;
StaticSubscriber.Subscribe(pub);
pub.Raise();
StaticSubscriber.FooWasRaised.Should().BeTrue();
}
public async Task Static_Handlers_Are_Called()
{
var pub = new Publisher();
StaticSubscriber.CallCount = 0;
StaticSubscriber.Subscribe(pub);
await pub.Raise();
StaticSubscriber.CallCount.Should().Be(1);
}
public async Task Handlers_Can_Be_Unsubscribed()
{
var pub = new Publisher();
var calledSubscribers = new List <int>();
var sub1 = new InstanceSubscriber(1, i => AddAsync(calledSubscribers, i));
sub1.Subscribe(pub);
var sub2 = new InstanceSubscriber(2, i => AddAsync(calledSubscribers, i));
sub2.Subscribe(pub);
StaticSubscriber.CallCount = 0;
StaticSubscriber.Subscribe(pub);
// Make sure they really were subscribed
await pub.Raise();
calledSubscribers.Should().Equal(1, 2);
StaticSubscriber.CallCount.Should().Be(1);
calledSubscribers.Clear();
sub1.Unsubscribe(pub);
await pub.Raise();
calledSubscribers.Should().Equal(2);
StaticSubscriber.CallCount = 0;
StaticSubscriber.Unsubscribe(pub);
await pub.Raise();
StaticSubscriber.CallCount.Should().Be(0);
calledSubscribers.Clear();
sub2.Unsubscribe(pub);
await pub.Raise();
calledSubscribers.Should().BeEmpty();
// Make sure subscribers are not collected before the end of the test
GC.KeepAlive(sub1);
GC.KeepAlive(sub2);
}