public void LinearRetryTest()
{
int invocationCounter = 0;
var sw = new Stopwatch();
var error = new Action(() =>
{
invocationCounter++;
throw new NotImplementedException();
});
var retry = new FaultTolerantAction(error, 5);
sw.Start();
var success = retry.Invoke();
sw.Stop();
Assert.AreEqual(5, invocationCounter);
Assert.AreEqual(5, retry.Tries);
Assert.IsNotNull(retry.Exception);
Assert.IsTrue(sw.ElapsedMilliseconds >= 4000);
Assert.IsTrue(sw.ElapsedMilliseconds < 4500);
Assert.IsFalse(success);
}
public void LinearRetryWithParameterTest()
{
var invocationCounter = 0;
string data = string.Empty;
var sw = new Stopwatch();
var error = new Action <string>(s =>
{
invocationCounter++;
data = s;
throw new NotImplementedException();
});
var retry = new FaultTolerantAction <string>(error, 5, new LinearRetryStrategy(1000));
sw.Start();
var success = retry.Invoke("myvalue");
sw.Stop();
Assert.AreEqual(5, invocationCounter);
Assert.AreEqual(5, retry.Tries);
Assert.IsNotNull(retry.Exception);
Assert.IsTrue(sw.ElapsedMilliseconds >= 4000);
Assert.IsTrue(sw.ElapsedMilliseconds < 4500);
Assert.IsFalse(success);
Assert.AreEqual("myvalue", data);
}
public void ExponentialRetryTest()
{
int invocationCounter = 0;
var sw = new Stopwatch();
var error = new Action(() =>
{
invocationCounter++;
throw new NotImplementedException();
});
var retry = new FaultTolerantAction(error, 5, new ExponentialRetryStrategy(1000));
sw.Start();
retry.Invoke();
sw.Stop();
Assert.AreEqual(5, invocationCounter);
Assert.AreEqual(5, retry.Tries);
Assert.IsNotNull(retry.Exception);
Assert.IsTrue(sw.ElapsedMilliseconds >= 15000);
Assert.IsTrue(sw.ElapsedMilliseconds < 15500);
}
public void FilterTest()
{
int invocationCounter = 0;
var sw = new Stopwatch();
var error = new Action(() =>
{
invocationCounter++;
throw new NotImplementedException(invocationCounter.ToString());
});
var retry = new FaultTolerantAction(error, 5)
.Filter(e => e.Message == "1" || e.Message == "2");
bool success = false;
bool exceptionThrown = false;
sw.Start();
try
{
success = retry.Invoke();
}
catch (Exception)
{
exceptionThrown = true;
}
sw.Stop();
Assert.AreEqual(3, invocationCounter);
Assert.AreEqual(3, retry.Tries);
Assert.IsNotNull(retry.Exception);
Assert.IsTrue(sw.ElapsedMilliseconds >= 2000);
Assert.IsTrue(sw.ElapsedMilliseconds < 2500);
Assert.IsFalse(success);
Assert.IsTrue(exceptionThrown);
}
