public void TestExecuteWithRetry_OperationFails()
{
//Arrange
const int numberOfRetriesToAttempt = 3;
const int numberOfFailuresToSimulate = 3;
var operationSimulator = new OperationSimulator(numberOfFailuresToSimulate);
Func <Task <bool> > func = () => operationSimulator.SimulateOperationWithFailures();
//Act
Exception ex = Assert.Throws <AggregateException>(() => RetryOperationHelper.ExecuteWithRetry(func, numberOfRetriesToAttempt).Wait());
Assert.Equal(ex.InnerException.Message, "OperationSimulator: Simulating Operation Failure");
}
public void TestExecuteWithRetry_OperationSucceeds()
{
//Arrange
const int numberOfRetriesToAttempt = 3;
const int numberOfFailuresToSimulate = 2;
var operationSimulator = new OperationSimulator(numberOfFailuresToSimulate);
Func <Task <bool> > func = () => operationSimulator.SimulateOperationWithFailures();
//Act
var result = RetryOperationHelper.ExecuteWithRetry(func, numberOfRetriesToAttempt).Result;
//Assert
Assert.Equal(result, true);
}
public void TestExecuteWithRetry_OperationFails_VerifyOnFailureActionIsCalled()
{
//Arrange
const int numberOfRetriesToAttempt = 3;
const int numberOfFailuresToSimulate = 3;
TimeSpan retryTimeSpan = new TimeSpan(0, 0, 0, 1);
var operationSimulator = new OperationSimulator(numberOfFailuresToSimulate);
Func <Task <bool> > func = () => operationSimulator.SimulateOperationWithFailures();
Action <int, Exception> actionUponFailure = new Action <int, Exception>(operationSimulator.ThrowException);
//Act
Exception ex = Assert.Throws <AggregateException>(() => RetryOperationHelper.ExecuteWithRetry(func, numberOfRetriesToAttempt, retryTimeSpan, actionUponFailure).Wait());
Assert.Equal(ex.InnerException.Message, "OperationSimulator: ThrowException: Exception thrown to identify method");
}
