public void InjectFaultWith_Context_InjectionRate_Should_Not_Return_Fault()
{
Boolean executed = false;
Context context = new Context();
context["InjectionRate"] = 0.4;
Func <Context, ResultPrimitive> action = (ctx) => { executed = true; return(ResultPrimitive.Good); };
Func <Context, ResultPrimitive> fault = (ctx) =>
{
return(ResultPrimitive.Fault);
};
Func <Context, Double> injectionRate = (ctx) =>
{
if (ctx["InjectionRate"] != null)
{
return((double)ctx["InjectionRate"]);
}
return(0);
};
Func <Context, bool> enabled = (ctx) =>
{
return(true);
};
var policy = MonkeyPolicy.InjectFault <ResultPrimitive>(fault, injectionRate, enabled);
ResultPrimitive response = policy.Execute(action, context);
response.Should().Be(ResultPrimitive.Good);
executed.Should().BeTrue();
}
public async Task Should_return_value_from_cache_and_not_execute_delegate_if_cache_holds_value__default_for_value_type()
{
ResultPrimitive valueToReturnFromCache = default;
ResultPrimitive valueToReturnFromExecution = ResultPrimitive.Good;
valueToReturnFromExecution.Should().NotBe(valueToReturnFromCache);
const string operationKey = "SomeOperationKey";
IAsyncCacheProvider stubCacheProvider = new StubCacheProvider();
var cache = Policy.CacheAsync <ResultPrimitive>(stubCacheProvider, TimeSpan.MaxValue);
await stubCacheProvider.PutAsync(operationKey, valueToReturnFromCache, new Ttl(TimeSpan.MaxValue), CancellationToken.None, false).ConfigureAwait(false);
bool delegateExecuted = false;
(await cache.ExecuteAsync(async ctx =>
{
delegateExecuted = true;
await TaskHelper.EmptyTask.ConfigureAwait(false);
return(valueToReturnFromExecution);
}, new Context(operationKey))
.ConfigureAwait(false))
.Should().Be(valueToReturnFromCache);
delegateExecuted.Should().BeFalse();
}
public async Task InjectFault_With_Context_Enabled_Should_Not_Return_Fault_async()
{
Boolean executed = false;
Context context = new Context {
["ShouldFail"] = false
};
Func <Context, Task <ResultPrimitive> > actionAsync = (ctx) =>
{
executed = true;
return(Task.FromResult(ResultPrimitive.Good));
};
ResultPrimitive fault = ResultPrimitive.Fault;
Func <Context, CancellationToken, Task <bool> > enabled = (ctx, ct) =>
{
return(Task.FromResult((bool)ctx["ShouldFail"]));
};
var policy = MonkeyPolicy.InjectResultAsync <ResultPrimitive>(with =>
with.Result(fault)
.InjectionRate(0.6)
.EnabledWhen(enabled)
);
ResultPrimitive response = await policy.ExecuteAsync(actionAsync, context);
response.Should().Be(ResultPrimitive.Good);
executed.Should().BeTrue();
}
public void Should_handle_exception_when_TResult_policy_handling_exceptions_only()
{
Policy <ResultPrimitive> policy = Policy <ResultPrimitive>
.Handle <DivideByZeroException>().Retry(1);
ResultPrimitive result = policy.RaiseResultAndOrExceptionSequence(new DivideByZeroException(), ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.Good);
}
public void Should_not_return_handled_result_when_handled_result_raised_less_number_of_times_than_retry_count()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.Retry(3);
ResultPrimitive result = policy.RaiseResultSequence(ResultPrimitive.Fault, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.Good);
}
public async Task Should_return_result_when_result_is_not_the_specified_handled_result()
{
var policy = Policy
.HandleResult(ResultPrimitive.Fault)
.RetryAsync();
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.FaultAgain, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public async Task Should_not_return_handled_result_when_handled_result_raised_same_number_of_times_as_retry_count()
{
var policy = Policy
.HandleResult(ResultPrimitive.Fault)
.RetryAsync(3);
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good).ConfigureAwait(false);
result.Should().Be(ResultPrimitive.Good);
}
public async Task Should_return_handled_result_when_handled_result_raised_more_times_then_retry_count()
{
var policy = Policy
.HandleResult(ResultPrimitive.Fault)
.RetryAsync(3);
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good).ConfigureAwait(false);
result.Should().Be(ResultPrimitive.Fault); // It should give up retrying after 3 retries and return the last failure, so should return Fault, not Good.
}
public void Should_return_handled_result_when_handled_result_raised_more_times_then_retry_count()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.Retry(3);
ResultPrimitive result = policy.RaiseResultSequence(ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Fault, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.Fault); // It should give up retrying after 3 retries and return the last failure, so should return Fault, not Good.
}
public void Should_return_result_when_result_is_not_the_specified_handled_result()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.Retry();
ResultPrimitive result = policy.RaiseResultSequence(ResultPrimitive.FaultAgain, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public async void Should_return_result_when_result_is_not_the_specified_handled_result()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.RetryAsync();
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.FaultAgain, ResultPrimitive.Good).ConfigureAwait(false);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public async void Should_not_return_handled_result_when_handled_result_raised_less_number_of_times_than_retry_count()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.RetryAsync(3);
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.Fault, ResultPrimitive.Good).ConfigureAwait(false);
result.Should().Be(ResultPrimitive.Good);
}
public async Task Should_return_result_when_result_is_not_one_of_the_specified_handled_results()
{
var policy = Policy
.HandleResult(ResultPrimitive.Fault)
.OrResult(ResultPrimitive.FaultAgain)
.RetryAsync();
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.FaultYetAgain, ResultPrimitive.Good).ConfigureAwait(false);
result.Should().Be(ResultPrimitive.FaultYetAgain);
}
public async Task Should_return_handled_result_when_one_of_the_handled_results_is_raised_more_times_then_retry_count()
{
var policy = Policy
.HandleResult(ResultPrimitive.Fault)
.OrResult(ResultPrimitive.FaultAgain)
.RetryAsync(3);
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.FaultAgain, ResultPrimitive.FaultAgain, ResultPrimitive.FaultAgain, ResultPrimitive.FaultAgain, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public void Should_handle_both_exception_and_specified_result_if_raised_same_number_of_times_as_retry_count__when_configuring_exception_before_result()
{
Policy <ResultPrimitive> policy = Policy
.Handle <DivideByZeroException>()
.OrResult(ResultPrimitive.Fault)
.Retry(2);
ResultPrimitive result = policy.RaiseResultAndOrExceptionSequence(ResultPrimitive.Fault, new DivideByZeroException(), ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.Good);
}
public void Should_return_unhandled_result_if_not_one_of_results_or_exceptions_specified()
{
Policy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.Or <DivideByZeroException>()
.Retry(2);
ResultPrimitive result = policy.RaiseResultSequence(ResultPrimitive.FaultAgain);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public async void Should_return_handled_result_when_one_of_the_handled_results_is_raised_more_times_then_retry_count()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.OrResult(ResultPrimitive.FaultAgain)
.RetryAsync(3);
ResultPrimitive result = await policy.RaiseResultSequenceAsync(ResultPrimitive.FaultAgain, ResultPrimitive.FaultAgain, ResultPrimitive.FaultAgain, ResultPrimitive.FaultAgain, ResultPrimitive.Good).ConfigureAwait(false);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public void Should_not_return_handled_result_when_one_of_the_handled_results_raised_same_number_of_times_as_retry_count()
{
RetryPolicy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.OrResult(ResultPrimitive.FaultAgain)
.Retry(3);
ResultPrimitive result = policy.RaiseResultSequence(ResultPrimitive.Fault, ResultPrimitive.FaultAgain, ResultPrimitive.Fault, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.Good);
}
public void Should_not_throw_when_timeout_is_greater_than_execution_duration__pessimistic()
{
var policy = Policy.TimeoutAsync <ResultPrimitive>(TimeSpan.FromSeconds(1), TimeoutStrategy.Pessimistic);
ResultPrimitive result = ResultPrimitive.Undefined;
Func <Task> act = async() => result = await policy.ExecuteAsync(() => Task.FromResult(ResultPrimitive.Good));
act.Should().NotThrow();
result.Should().Be(ResultPrimitive.Good);
}
public void InjectFaultContext_Free_Should_Not_Return_Fault()
{
Boolean executed = false;
Func <ResultPrimitive> action = () => { executed = true; return(ResultPrimitive.Good); };
ResultPrimitive fault = ResultPrimitive.Fault;
var policy = MonkeyPolicy.InjectFault <ResultPrimitive>(fault, 0.4, () => true);
ResultPrimitive response = policy.Execute(action);
response.Should().Be(ResultPrimitive.Good);
executed.Should().BeTrue();
}
public void Should_handle_both_exceptions_and_specified_results_if_raised_same_number_of_times_as_retry_count__mixing_exceptions_and_results_specifying_results_first()
{
Policy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.Or <DivideByZeroException>()
.OrResult(ResultPrimitive.FaultAgain)
.Or <ArgumentException>()
.Retry(4);
ResultPrimitive result = policy.RaiseResultAndOrExceptionSequence(ResultPrimitive.Fault, new DivideByZeroException(), new ArgumentException(), ResultPrimitive.FaultAgain, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.Good);
}
public void Should_return_handled_result_when_handled_result_returned_next_after_retries_exhaust_handling_both_exceptions_and_specified_results__mixing_exceptions_and_results_specifying_results_first()
{
Policy <ResultPrimitive> policy = Policy
.HandleResult(ResultPrimitive.Fault)
.Or <DivideByZeroException>()
.OrResult(ResultPrimitive.FaultAgain)
.Or <ArgumentException>()
.Retry(3);
ResultPrimitive result = policy.RaiseResultAndOrExceptionSequence(ResultPrimitive.Fault, new DivideByZeroException(), new ArgumentException(), ResultPrimitive.FaultAgain, ResultPrimitive.Good);
result.Should().Be(ResultPrimitive.FaultAgain);
}
public void Should_not_throw_when_timeout_is_greater_than_execution_duration__optimistic()
{
var policy = Policy.TimeoutAsync <ResultPrimitive>(TimeSpan.FromSeconds(1), TimeoutStrategy.Optimistic);
ResultPrimitive result = ResultPrimitive.Undefined;
var userCancellationToken = CancellationToken.None;
Func <Task> act = async() => result = await policy.ExecuteAsync(ct => Task.FromResult(ResultPrimitive.Good), userCancellationToken)
.ConfigureAwait(false);
act.ShouldNotThrow();
result.Should().Be(ResultPrimitive.Good);
}
public void Should_not_throw_when_timeout_is_greater_than_execution_duration__pessimistic()
{
var policy = Policy.Timeout <ResultPrimitive>(TimeSpan.FromSeconds(1), TimeoutStrategy.Pessimistic);
ResultPrimitive result = ResultPrimitive.Undefined;
policy.Invoking(p =>
{
result = p.Execute(() => ResultPrimitive.Good);
}).ShouldNotThrow();
result.Should().Be(ResultPrimitive.Good);
}
public void Should_execute_delegate_and_put_value_in_cache_for_non_nullable_types_if_cache_does_not_hold_value()
{
const ResultPrimitive valueToReturn = ResultPrimitive.Substitute;
const string operationKey = "SomeOperationKey";
ISyncCacheProvider stubCacheProvider = new StubCacheProvider();
CachePolicy cache = Policy.Cache(stubCacheProvider, TimeSpan.MaxValue);
stubCacheProvider.Get(operationKey).Should().BeNull();
cache.Execute(ctx => { return(valueToReturn); }, new Context(operationKey)).Should().Be(valueToReturn);
stubCacheProvider.Get(operationKey).Should().Be(valueToReturn);
}
public void Should_not_throw_when_timeout_is_greater_than_execution_duration__optimistic()
{
var policy = Policy.Timeout <ResultPrimitive>(TimeSpan.FromSeconds(1), TimeoutStrategy.Optimistic);
var userCancellationToken = CancellationToken.None;
ResultPrimitive result = ResultPrimitive.Undefined;
policy.Invoking(p =>
{
result = p.Execute(ct => ResultPrimitive.Good, userCancellationToken);
}).ShouldNotThrow();
result.Should().Be(ResultPrimitive.Good);
}
public void Should_not_error_for_executions_on_non_nullable_types_if_cache_does_not_hold_value()
{
const string operationKey = "SomeOperationKey";
bool onErrorCalled = false;
Action <Context, string, Exception> onError = (ctx, key, exc) => { onErrorCalled = true; };
ISyncCacheProvider stubCacheProvider = new StubCacheProvider();
CachePolicy cache = Policy.Cache(stubCacheProvider, TimeSpan.MaxValue, onError);
stubCacheProvider.Get(operationKey).Should().BeNull();
ResultPrimitive result = cache.Execute(ctx => ResultPrimitive.Substitute, new Context(operationKey));
onErrorCalled.Should().BeFalse();
}
public async Task InjectFault_Context_Free_Should_Not_Return_Fault_async()
{
Boolean executed = false;
Func <Task <ResultPrimitive> > actionAsync = () =>
{
executed = true;
return(Task.FromResult(ResultPrimitive.Good));
};
ResultPrimitive fault = ResultPrimitive.Fault;
var policy = MonkeyPolicy.InjectFaultAsync <ResultPrimitive>(fault, 0.4, () => true);
ResultPrimitive response = await policy.ExecuteAsync(actionAsync);
response.Should().Be(ResultPrimitive.Good);
executed.Should().BeTrue();
}
public async Task Double_generic_SerializingCacheProvider_should_not_serialize_on_put_for_defaultTResult()
{
bool serializeInvoked = false;
StubSerializer <ResultPrimitive, StubSerialized <ResultPrimitive> > stubTResultSerializer = new StubSerializer <ResultPrimitive, StubSerialized <ResultPrimitive> >(
serialize: o => { serializeInvoked = true; return(new StubSerialized <ResultPrimitive>(o)); },
deserialize: s => s.Original
);
StubCacheProvider stubCacheProvider = new StubCacheProvider();
ResultPrimitive objectToCache = default(ResultPrimitive);
string key = "some key";
SerializingCacheProviderAsync <ResultPrimitive, StubSerialized <ResultPrimitive> > serializingCacheProvider = new SerializingCacheProviderAsync <ResultPrimitive, StubSerialized <ResultPrimitive> >(stubCacheProvider.AsyncFor <StubSerialized <ResultPrimitive> >(), stubTResultSerializer);
await serializingCacheProvider.PutAsync(key, objectToCache, new Ttl(TimeSpan.FromMinutes(1)), CancellationToken.None, false);
serializeInvoked.Should().Be(false);
stubCacheProvider.Get(key).Should().BeNull();
}
public void InjectFaultContext_Free_Should_Return_Fault()
{
Boolean executed = false;
Func <ResultPrimitive> action = () => { executed = true; return(ResultPrimitive.Good); };
ResultPrimitive fault = ResultPrimitive.Fault;
var policy = MonkeyPolicy.InjectResult <ResultPrimitive>(with =>
with.Result(fault)
.InjectionRate(0.6)
.Enabled()
);
ResultPrimitive response = policy.Execute(action);
response.Should().Be(ResultPrimitive.Fault);
executed.Should().BeFalse();
}
public ResultClass(ResultPrimitive resultCode, string someString)
: this(resultCode)
{
SomeString = someString;
}
public ResultClass(ResultPrimitive resultCode)
{
ResultCode = resultCode;
}
