public void Should_handle_handled_fault_and_execute_fallback_following_faulting_action_execution_when_user_delegate_does_not_observe_cancellationtoken() { bool fallbackActionExecuted = false; Func <ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return(ResultPrimitive.Substitute); }; CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; FallbackPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1, ActionObservesCancellation = false }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault) .Should().Be(ResultPrimitive.Substitute); attemptsInvoked.Should().Be(1); fallbackActionExecuted.Should().BeTrue(); }
public void Should_report_cancellation_during_faulting_last_retry_execution_when_user_delegate_does_observe_cancellationToken() { RetryPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1 + 3, ActionObservesCancellation = true }; policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good)) .Should().Throw <OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1 + 3); }
public void Should_report_faulting_from_faulting_last_retry_execution_when_user_delegate_does_not_observe_cancellation_raised_during_last_retry() { RetryPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1 + 3, ActionObservesCancellation = false }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Fault); attemptsInvoked.Should().Be(1 + 3); }
public void Should_execute_all_tries_when_faulting_and_cancellationToken_not_cancelled() { RetryPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Good); attemptsInvoked.Should().Be(1 + 3); }
public void Should_report_cancellation_after_faulting_action_execution_and_cancel_further_retries_if_onRetry_invokes_cancellation() { CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; RetryPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3, (_, __) => { cancellationTokenSource.Cancel(); }); int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancellation during onRetry instead - see above. ActionObservesCancellation = false }; policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good)) .Should().Throw <OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1); }
public static TResult RaiseResultSequenceAndOrCancellation <TResult>(this Policy <TResult> policy, Scenario scenario, CancellationTokenSource cancellationTokenSource, Action onExecute, params TResult[] resultsToRaise) { return(policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, resultsToRaise.ToList())); }
public void Should_not_execute_action_when_cancellationToken_cancelled_before_execute() { RetryPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancellation token cancelled manually below - before any scenario execution. }; cancellationTokenSource.Cancel(); policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good)) .Should().Throw <OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(0); }
public void Should_not_execute_action_when_cancellationtoken_cancelled_before_execute() { bool fallbackActionExecuted = false; Func <ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return(ResultPrimitive.Substitute); }; FallbackPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancellation token cancelled manually below - before any scenario execution. }; cancellationTokenSource.Cancel(); policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault)) .ShouldThrow <OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(0); fallbackActionExecuted.Should().BeFalse(); }
public void Should_report_cancellation_and_not_execute_fallback_during_otherwise_non_faulting_action_execution_when_user_delegate_observes_cancellationtoken_and_fallback_does_not_handle_cancellations() { bool fallbackActionExecuted = false; Func <ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return(ResultPrimitive.Substitute); }; FallbackPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1, ActionObservesCancellation = true }; policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Good)) .ShouldThrow <OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1); fallbackActionExecuted.Should().BeFalse(); }
public void Should_execute_action_when_non_faulting_and_cancellationtoken_not_cancelled() { bool fallbackActionExecuted = false; Func <ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return(ResultPrimitive.Substitute); }; FallbackPolicy <ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Good); attemptsInvoked.Should().Be(1); fallbackActionExecuted.Should().BeFalse(); }
public static TResult RaiseResultSequenceAndOrCancellation <TResult>(this Policy <TResult> policy, Scenario scenario, CancellationTokenSource cancellationTokenSource, Action onExecute, IEnumerable <TResult> resultsToRaise) { int counter = 0; CancellationToken cancellationToken = cancellationTokenSource.Token; using (var enumerator = resultsToRaise.GetEnumerator()) { return(policy.Execute(ct => { onExecute(); counter++; if (!enumerator.MoveNext()) { throw new ArgumentOutOfRangeException(nameof(resultsToRaise), $"Not enough {typeof(TResult).Name} values in {nameof(resultsToRaise)}."); } if (scenario.AttemptDuringWhichToCancel.HasValue && counter >= scenario.AttemptDuringWhichToCancel.Value) { cancellationTokenSource.Cancel(); } if (scenario.ActionObservesCancellation) { ct.ThrowIfCancellationRequested(); } return enumerator.Current; }, cancellationToken)); } }
public void Should_report_cancellation_after_faulting_action_execution_and_cancel_further_retries_if_onRetry_invokes_cancellation() { CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; RetryPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3, (_, __) => { cancellationTokenSource.Cancel(); }); int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancellation during onRetry instead - see above. ActionObservesCancellation = false }; policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1); }
public void Should_report_faulting_from_faulting_last_retry_execution_when_user_delegate_does_not_observe_cancellation_raised_during_last_retry() { RetryPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1 + 3, ActionObservesCancellation = false }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Fault); attemptsInvoked.Should().Be(1 + 3); }
public void Should_report_cancellation_during_faulting_last_retry_execution_when_user_delegate_does_observe_cancellationtoken() { RetryPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1 + 3, ActionObservesCancellation = true }; policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1 + 3); }
public void Should_not_execute_action_when_cancellationtoken_cancelled_before_execute() { RetryPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancellation token cancelled manually below - before any scenario execution. }; cancellationTokenSource.Cancel(); policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(0); }
public void Should_execute_action_when_non_faulting_and_cancellationtoken_not_cancelled() { var durationOfBreak = TimeSpan.FromMinutes(1); CircuitBreakerPolicy<ResultPrimitive> breaker = Policy .HandleResult(ResultPrimitive.Fault) .CircuitBreaker(2, durationOfBreak); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, }; breaker.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Good); attemptsInvoked.Should().Be(1); }
public void Should_handle_handled_fault_and_execute_fallback_following_faulting_action_execution_when_user_delegate_does_not_observe_cancellationtoken() { bool fallbackActionExecuted = false; Func<ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return ResultPrimitive.Substitute; }; CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; FallbackPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1, ActionObservesCancellation = false }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault) .Should().Be(ResultPrimitive.Substitute); attemptsInvoked.Should().Be(1); fallbackActionExecuted.Should().BeTrue(); }
public void Should_report_cancellation_and_not_execute_fallback_during_otherwise_non_faulting_action_execution_when_user_delegate_observes_cancellationtoken_and_fallback_does_not_handle_cancellations() { bool fallbackActionExecuted = false; Func<ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return ResultPrimitive.Substitute; }; FallbackPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1, ActionObservesCancellation = true }; policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Good)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1); fallbackActionExecuted.Should().BeFalse(); }
public void Should_not_execute_action_when_cancellationtoken_cancelled_before_execute() { bool fallbackActionExecuted = false; Func<ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return ResultPrimitive.Substitute; }; FallbackPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancellation token cancelled manually below - before any scenario execution. }; cancellationTokenSource.Cancel(); policy.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(0); fallbackActionExecuted.Should().BeFalse(); }
public void Should_execute_action_when_non_faulting_and_cancellationtoken_not_cancelled() { bool fallbackActionExecuted = false; Func<ResultPrimitive> fallbackAction = () => { fallbackActionExecuted = true; return ResultPrimitive.Substitute; }; FallbackPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .OrResult(ResultPrimitive.FaultAgain) .Fallback(fallbackAction); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Good); attemptsInvoked.Should().Be(1); fallbackActionExecuted.Should().BeFalse(); }
public void Should_report_faulting_from_faulting_action_execution_when_user_delegate_does_not_observe_cancellation() { var durationOfBreak = TimeSpan.FromMinutes(1); CircuitBreakerPolicy<ResultPrimitive> breaker = Policy .HandleResult(ResultPrimitive.Fault) .CircuitBreaker(2, durationOfBreak); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1, ActionObservesCancellation = false }; breaker.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault) .Should().Be(ResultPrimitive.Fault); attemptsInvoked.Should().Be(1); }
public void Should_report_cancellation_when_both_open_circuit_and_cancellation() { CircuitBreakerPolicy<ResultPrimitive> breaker = Policy .HandleResult(ResultPrimitive.Fault) .CircuitBreaker(1, TimeSpan.FromMinutes(1)); breaker.RaiseResultSequence(ResultPrimitive.Fault) .Should().Be(ResultPrimitive.Fault); breaker.Invoking(x => x.RaiseResultSequence(ResultPrimitive.Fault)) .ShouldThrow<BrokenCircuitException>() .WithMessage("The circuit is now open and is not allowing calls."); // Circuit is now broken. CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; cancellationTokenSource.Cancel(); Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, // Cancelled manually instead - see above. ActionObservesCancellation = false }; breaker.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Good)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(0); }
public void Should_execute_all_tries_when_faulting_and_cancellationtoken_not_cancelled() { RetryPolicy<ResultPrimitive> policy = Policy .HandleResult(ResultPrimitive.Fault) .Retry(3); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = null, }; policy.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good) .Should().Be(ResultPrimitive.Good); attemptsInvoked.Should().Be(1 + 3); }
public void Should_report_cancellation_during_faulting_action_execution_when_user_delegate_observes_cancellationtoken() { var durationOfBreak = TimeSpan.FromMinutes(1); CircuitBreakerPolicy<ResultPrimitive> breaker = Policy .HandleResult(ResultPrimitive.Fault) .CircuitBreaker(2, durationOfBreak); CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; int attemptsInvoked = 0; Action onExecute = () => attemptsInvoked++; Scenario scenario = new Scenario { AttemptDuringWhichToCancel = 1, ActionObservesCancellation = true }; breaker.Invoking(x => x.RaiseResultSequenceAndOrCancellation(scenario, cancellationTokenSource, onExecute, ResultPrimitive.Fault, ResultPrimitive.Good)) .ShouldThrow<OperationCanceledException>() .And.CancellationToken.Should().Be(cancellationToken); attemptsInvoked.Should().Be(1); }