public void SynchronizedInvokerIsASingletonPerSynchronizationContext()
{
var syncContext1Invoker1 = SynchronizedInvoker.GetInstance();
var syncContext1Invoker2 = SynchronizedInvoker.GetInstance();
InitSynchronizationContext();
var syncContext2Invoker1 = SynchronizedInvoker.GetInstance();
Assert.IsTrue(ReferenceEquals(syncContext1Invoker1, syncContext1Invoker2));
Assert.IsFalse(ReferenceEquals(syncContext1Invoker1, syncContext2Invoker1));
}
public void SynchronizedInvokerSendsToASyncContext()
{
string invokedWith = null;
var sub = new Subscription(new Action <string>(s => invokedWith = s));
var invoker = SynchronizedInvoker.GetInstance();
Task.Factory.StartNew(() => invoker.Invoke(sub, "Hello")).Wait();
Assert.AreEqual(1, _syncContextMock.CallCount);
Assert.AreEqual("Hello", invokedWith);
}
public void SynchronizedInvokerUsesSynchronizationContextOnlyIfInvokedOnDifferentThread()
{
string invokedWith = null;
var sub = new Subscription(new Action <string>(s => invokedWith = s));
var invoker = SynchronizedInvoker.GetInstance();
invoker.Invoke(sub, "Hello");
Assert.AreEqual(0, _syncContextMock.CallCount);
Assert.AreEqual("Hello", invokedWith);
Task.Factory.StartNew(() => invoker.Invoke(sub, "Hello2")).Wait();
Assert.AreEqual(1, _syncContextMock.CallCount);
Assert.AreEqual("Hello2", invokedWith);
}
public static void Run(Button button)
{
SynchronizedInvoker.Invoke(() => button.Text = "running");
Thread.Sleep(5000); // do some important work here
SynchronizedInvoker.Invoke(() => button.Text = "finished");
}
