public void StopBeforeStartError()
{
Mock <IChecker> checkerMock1 = new Mock <IChecker>();
checkerMock1.Setup(p => p.Name).Returns("Checker1");
checkerMock1.Setup(p => p.Check()).Returns(true);
Mock <IChecker> checkerMock2 = new Mock <IChecker>();
checkerMock2.Setup(p => p.Name).Returns("Checker2");
checkerMock2.Setup(p => p.Check()).Returns(true);
Mock <IChecker> checkerMock3 = new Mock <IChecker>();
checkerMock3.Setup(p => p.Name).Returns("Checker3");
checkerMock3.Setup(p => p.Check()).Returns(true);
WatchdogThreadTester tester = new WatchdogThreadTester
(
() => new[] { checkerMock1.Object, checkerMock2.Object, checkerMock3.Object },
1000 * 1000,
() => { },
() => { }
);
Assert.Throws <InvalidOperationException>(() => tester.StopChecking());
}
public void CheckerFailureDisablesWatchdog(int checkersCount, int failedCount)
{
object executionObjectsLock = new object();
List <Guid> executionSteps = new List <Guid>();
Guid enableActionId = Guid.NewGuid();
Guid disableActionId = Guid.NewGuid();
bool returnFailures = false;
bool[] secondCheckResult = Enumerable.Range(0, checkersCount).Select(p => !(p < failedCount)).OrderBy(p => _random.NextDouble()).ToArray();
List <IChecker> checkers = new List <IChecker>();
for (int i = 0; i < checkersCount; i++)
{
int i1 = i;
Mock <IChecker> checkerMock = new Mock <IChecker>();
checkerMock.Setup(p => p.Name).Returns($"Checker{i}");
checkerMock.Setup(p => p.Check()).Returns(() => !returnFailures || secondCheckResult[i1]);
checkers.Add(checkerMock.Object);
}
WatchdogThreadTester tester = new WatchdogThreadTester(() => checkers, 1, () => { }, () => { });
tester.StartChecking
(
() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(enableActionId);
returnFailures = true;
}
},
() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(disableActionId);
returnFailures = false;
}
}
);
while (executionSteps.Count < 3)
{
Thread.Sleep(50);
}
tester.StopChecking();
Assert.AreEqual(enableActionId, executionSteps[0]);
Assert.AreEqual(disableActionId, executionSteps[1]);
Assert.AreEqual(enableActionId, executionSteps[2]);
}
public void ExecutesCheckersAndBackgroundTask()
{
object executionObjectsLock = new object();
List <Guid> executionSteps = new List <Guid>();
Guid bgStartId = Guid.NewGuid();
Guid bgStopId = Guid.NewGuid();
Guid checker1Id = Guid.NewGuid();
Guid checker2Id = Guid.NewGuid();
Guid checker3Id = Guid.NewGuid();
Guid enableActionId = Guid.NewGuid();
Guid disableActionId = Guid.NewGuid();
ManualResetEvent wait1 = new ManualResetEvent(false);
ManualResetEvent wait2 = new ManualResetEvent(false);
ManualResetEvent wait3 = new ManualResetEvent(false);
Mock <IChecker> checkerMock1 = new Mock <IChecker>();
checkerMock1.Setup(p => p.Name).Returns("Checker1");
checkerMock1
.Setup(p => p.Check())
.Callback(() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(checker1Id);
}
wait1.Set();
})
.Returns(true);
Mock <IChecker> checkerMock2 = new Mock <IChecker>();
checkerMock2.Setup(p => p.Name).Returns("Checker2");
checkerMock2
.Setup(p => p.Check())
.Callback(() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(checker2Id);
}
wait2.Set();
})
.Returns(true);
Mock <IChecker> checkerMock3 = new Mock <IChecker>();
checkerMock3.Setup(p => p.Name).Returns("Checker3");
checkerMock3
.Setup(p => p.Check())
.Callback(() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(checker3Id);
}
wait3.Set();
})
.Returns(true);
WatchdogThreadTester tester = new WatchdogThreadTester
(
() => new[] { checkerMock1.Object, checkerMock2.Object, checkerMock3.Object },
1000 * 1000,
() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(bgStartId);
}
wait2.Set();
},
() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(bgStopId);
}
wait2.Set();
}
);
tester.StartChecking
(
() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(enableActionId);
}
},
() =>
{
lock (executionObjectsLock)
{
executionSteps.Add(disableActionId);
}
}
);
WaitHandle.WaitAll(new[] { wait1, wait2, wait3 }.Cast <WaitHandle>().ToArray());
tester.StopChecking();
int skip = 0;
Assert.AreEqual(bgStartId, executionSteps.Skip(skip).First());
++skip;
Assert.AreEqual(1, executionSteps.Skip(skip).Take(3).Count(p => p == checker1Id));
Assert.AreEqual(1, executionSteps.Skip(skip).Take(3).Count(p => p == checker2Id));
Assert.AreEqual(1, executionSteps.Skip(skip).Take(3).Count(p => p == checker3Id));
skip += 3;
Assert.AreEqual(enableActionId, executionSteps.Skip(skip).First());
++skip;
Assert.IsFalse(executionSteps.Any(p => p == disableActionId));
}