public void InjectFault_Context_Free_Enabled_Should_not_execute_user_delegate_async()
{
string exceptionMessage = "exceptionMessage";
Exception fault = new Exception(exceptionMessage);
Boolean executed = false;
Func <Task <ResultPrimitive> > actionAsync = () => { executed = true; return(Task.FromResult(ResultPrimitive.Good)); };
var policy = MonkeyPolicy.InjectFaultAsync <ResultPrimitive>(fault, 0.6, () => true);
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync))
.ShouldThrowExactly <Exception>()
.WithMessage(exceptionMessage);
executed.Should().BeFalse();
}
public void InjectFault_With_Context_Should_not_execute_user_delegate_async_with_all_context_set()
{
Boolean executed = false;
Context context = new Context();
string failureMessage = "Failure Message";
context["ShouldFail"] = true;
context["Message"] = failureMessage;
context["InjectionRate"] = 0.6;
Func <Context, CancellationToken, Task <Exception> > fault = (ctx, cts) =>
{
if (ctx["Message"] != null)
{
Exception ex = new InvalidOperationException(ctx["Message"].ToString());
return(Task.FromResult(ex));
}
return(Task.FromResult(new Exception()));
};
Func <Context, CancellationToken, Task <Double> > injectionRate = (ctx, ct) =>
{
double rate = 0;
if (ctx["InjectionRate"] != null)
{
rate = (double)ctx["InjectionRate"];
}
return(Task.FromResult(rate));
};
Func <Context, CancellationToken, Task <bool> > enabled = (ctx, ct) =>
{
return(Task.FromResult((bool)ctx["ShouldFail"]));
};
var policy = MonkeyPolicy.InjectExceptionAsync(with =>
with.Fault(fault)
.InjectionRate(injectionRate)
.EnabledWhen(enabled)
);
Func <Context, Task> actionAsync = (_) => { executed = true; return(TaskHelper.EmptyTask); };
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync, context))
.ShouldThrowExactly <InvalidOperationException>()
.WithMessage(failureMessage);
executed.Should().BeFalse();
}
public void InjectLatency_Context_Free_Should_Not_Introduce_Delay_If_Dissabled()
{
var executed = false;
var policy = MonkeyPolicy.InjectLatency(with =>
with.Latency(TimeSpan.FromMilliseconds(500))
.InjectionRate(0.6)
.Enabled(false)
);
policy.Execute(() => { executed = true; });
executed.Should().BeTrue();
_totalTimeSlept.Should().Be(0);
}
public void InjectLatency_With_Context_Should_not_execute_user_delegate_if_user_cancelationtoken_cancelled_on_injectionrate_config_delegate()
{
var delay = TimeSpan.FromMilliseconds(500);
var context = new Context();
context["ShouldInjectLatency"] = true;
context["Enabled"] = true;
context["InjectionRate"] = 0.6;
Func <Context, CancellationToken, Task <TimeSpan> > latencyProvider = async(ctx, ct) =>
{
if ((bool)ctx["ShouldInjectLatency"])
{
return(await Task.FromResult(delay));
}
return(await Task.FromResult(TimeSpan.FromMilliseconds(0)));
};
Boolean executed = false;
Func <Context, CancellationToken, Task> actionAsync = (_, ct) => { executed = true; return(TaskHelper.EmptyTask); };
using (CancellationTokenSource cts = new CancellationTokenSource())
{
Func <Context, CancellationToken, Task <bool> > enabled = async(ctx, ct) =>
{
return(await Task.FromResult((bool)ctx["Enabled"]));
};
Func <Context, CancellationToken, Task <double> > injectionRate = async(ctx, ct) =>
{
cts.Cancel();
if (ctx["InjectionRate"] != null)
{
return(await Task.FromResult((double)ctx["InjectionRate"]));
}
return(await Task.FromResult(0));
};
var policy = MonkeyPolicy.InjectLatencyAsync(latencyProvider, injectionRate, enabled);
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync, context, cts.Token))
.ShouldThrow <OperationCanceledException>();
}
executed.Should().BeFalse();
_totalTimeSlept.Should().Be(0);
}
public void InjectLatency_With_Context_With_Latency_Lambda_Should_Not_Introduce_Delay()
{
var delay = TimeSpan.FromMilliseconds(500);
var context = new Context
{
["ShouldInjectLatency"] = false,
["Enabled"] = true,
["InjectionRate"] = 0.6
};
Func <Context, CancellationToken, TimeSpan> latencyProvider = (ctx, ct) =>
{
if ((bool)ctx["ShouldInjectLatency"])
{
return(delay);
}
return(TimeSpan.FromMilliseconds(0));
};
Func <Context, CancellationToken, bool> enabled = (ctx, ct) =>
{
return((bool)ctx["Enabled"]);
};
Func <Context, CancellationToken, double> injectionRate = (ctx, ct) =>
{
if (ctx["InjectionRate"] != null)
{
return((double)ctx["InjectionRate"]);
}
return(0);
};
Boolean executed = false;
var policy = MonkeyPolicy.InjectLatency <ResultPrimitive>(with =>
with.Latency(latencyProvider)
.InjectionRate(injectionRate)
.EnabledWhen(enabled)
);
Func <Context, ResultPrimitive> action = (ctx) => { executed = true; return(ResultPrimitive.Good); };
var result = policy.Execute(action, context);
executed.Should().BeTrue();
result.Should().Be(ResultPrimitive.Good);
_totalTimeSlept.Should().Be(0);
}
public void InjectLatency_With_Context_Should_not_execute_user_delegate_if_user_cancelationtoken_cancelled_on_latency_config_delegate()
{
var delay = TimeSpan.FromMilliseconds(500);
var context = new Context();
context["ShouldInjectLatency"] = true;
context["Enabled"] = true;
context["InjectionRate"] = 0.6;
Boolean executed = false;
using (CancellationTokenSource cts = new CancellationTokenSource())
{
Func <Context, CancellationToken, bool> enabled = (ctx, ct) =>
{
return((bool)ctx["Enabled"]);
};
Func <Context, CancellationToken, double> injectionRate = (ctx, ct) =>
{
if (ctx["InjectionRate"] != null)
{
return((double)ctx["InjectionRate"]);
}
return(0);
};
Func <Context, CancellationToken, TimeSpan> latencyProvider = (ctx, ct) =>
{
cts.Cancel();
if ((bool)ctx["ShouldInjectLatency"])
{
return(delay);
}
return(TimeSpan.FromMilliseconds(0));
};
var policy = MonkeyPolicy.InjectLatency(latencyProvider, injectionRate, enabled);
policy.Invoking(x => x.Execute((ctx, ct) => { executed = true; }, context, cts.Token))
.ShouldThrow <OperationCanceledException>();
}
executed.Should().BeFalse();
_totalTimeSlept.Should().Be(0);
}
public async Task InjectLatency_With_Context_With_Latency_Lambda_Should_Not_Introduce_Delay_If_InjectionRate_Is_Not_Covered()
{
var delay = TimeSpan.FromMilliseconds(500);
var context = new Context
{
["ShouldInjectLatency"] = true,
["Enabled"] = true,
["InjectionRate"] = 0.3
};
Func <Context, CancellationToken, Task <TimeSpan> > latencyProvider = async(ctx, ct) =>
{
if ((bool)ctx["ShouldInjectLatency"])
{
return(await Task.FromResult(delay));
}
return(await Task.FromResult(TimeSpan.FromMilliseconds(0)));
};
Func <Context, CancellationToken, Task <bool> > enabled = async(ctx, ct) =>
{
return(await Task.FromResult((bool)ctx["Enabled"]));
};
Func <Context, CancellationToken, Task <double> > injectionRate = async(ctx, ct) =>
{
if (ctx["InjectionRate"] != null)
{
return(await Task.FromResult((double)ctx["InjectionRate"]));
}
return(await Task.FromResult(0));
};
Boolean executed = false;
var policy = MonkeyPolicy.InjectLatencyAsync <ResultPrimitive>(with =>
with.Latency(latencyProvider)
.InjectionRate(injectionRate)
.EnabledWhen(enabled)
);
Func <Context, Task <ResultPrimitive> > actionAsync = _ => { executed = true; return(Task.FromResult(ResultPrimitive.Good)); };
var result = await policy.ExecuteAsync(actionAsync, context);
executed.Should().BeTrue();
result.Should().Be(ResultPrimitive.Good);
_totalTimeSlept.Should().Be(0);
}
public void InjectFault_With_Context_Should_not_execute_user_delegate_if_user_cancelationtoken_cancelled_before_to_start_execution()
{
string failureMessage = "Failure Message";
Boolean executed = false;
Context context = new Context();
context["ShouldFail"] = true;
context["Message"] = failureMessage;
context["InjectionRate"] = 0.6;
Func <Context, CancellationToken, Exception> fault = (ctx, cts) =>
{
if (ctx["Message"] != null)
{
Exception ex = new InvalidOperationException(ctx["Message"].ToString());
return(ex);
}
return(new Exception());
};
Func <Context, CancellationToken, Double> injectionRate = (ctx, ct) =>
{
double rate = 0;
if (ctx["InjectionRate"] != null)
{
rate = (double)ctx["InjectionRate"];
}
return(rate);
};
Func <Context, CancellationToken, bool> enabled = (ctx, ct) =>
{
return((bool)ctx["ShouldFail"]);
};
var policy = MonkeyPolicy.InjectFault(fault, injectionRate, enabled);
using (CancellationTokenSource cts = new CancellationTokenSource())
{
cts.Cancel();
policy.Invoking(x => x.Execute((ctx, ct) => { executed = true; }, context, cts.Token))
.ShouldThrow <OperationCanceledException>();
}
executed.Should().BeFalse();
}
public void InjectFault_With_Context_Should_not_execute_user_delegate_async_basic()
{
Boolean executed = false;
Context context = new Context();
Func <Context, CancellationToken, Task <Exception> > fault = (ctx, cts) => Task.FromResult(new Exception());
Func <Context, CancellationToken, Task <bool> > enabled = (ctx, ct) => Task.FromResult(true);
Func <Context, CancellationToken, Task <Double> > injectionRate = (ctx, ct) => Task.FromResult(0.6);
var policy = MonkeyPolicy.InjectFaultAsync(fault, injectionRate, enabled);
Func <Context, Task> actionAsync = (_) => { executed = true; return(TaskHelper.EmptyTask); };
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync, context)).ShouldThrowExactly <Exception>();
executed.Should().BeFalse();
}
public void InjectFault_should_throw_if_injection_rate_is_out_of_range_too_high()
{
Boolean executed = false;
Context context = new Context();
Func <Context, CancellationToken, Task <Exception> > fault = (ctx, cts) => Task.FromResult(new Exception());
Func <Context, CancellationToken, Task <bool> > enabled = (ctx, ct) => Task.FromResult(true);
Func <Context, CancellationToken, Task <Double> > injectionRate = (ctx, ct) => Task.FromResult(1.01);
var policy = MonkeyPolicy.InjectFaultAsync(fault, injectionRate, enabled);
Func <Context, Task> actionAsync = (_) => { executed = true; return(TaskHelper.EmptyTask); };
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync, context)).ShouldThrowExactly <ArgumentOutOfRangeException>();
executed.Should().BeFalse();
}
public void InjectFault_should_throw_if_injection_rate_is_out_of_range_too_high()
{
Boolean executed = false;
Context context = new Context();
Func <Context, Exception> fault = (ctx) => new Exception();
Func <Context, double> injectionRate = (ctx) => 1.01;
Func <Context, bool> enabled = (ctx) => true;
var policy = MonkeyPolicy.InjectFault(fault, injectionRate, enabled);
policy.Invoking(x => x.Execute((ctx) => { executed = true; }, context))
.ShouldThrowExactly <ArgumentOutOfRangeException>();
executed.Should().BeFalse();
}
public void Given_enabled_and_randomly_not_within_threshold_should_not_inject_behaviour()
{
Boolean userDelegateExecuted = false;
Boolean injectedBehaviourExecuted = false;
var policy = MonkeyPolicy.InjectBehaviour <ResultPrimitive>(with =>
with.Behaviour(() => { injectedBehaviourExecuted = true; })
.InjectionRate(0.4)
.Enabled());
policy.Execute(() => { userDelegateExecuted = true; return(ResultPrimitive.Good); });
userDelegateExecuted.Should().BeTrue();
injectedBehaviourExecuted.Should().BeFalse();
}
public void InjectFault_With_Context_Should_not_execute_user_delegate_with_default_context()
{
Boolean executed = false;
Context context = new Context();
Func <Context, Exception> fault = (ctx) => new Exception();
Func <Context, double> injectionRate = (ctx) => 0.6;
Func <Context, bool> enabled = (ctx) => true;
var policy = MonkeyPolicy.InjectFault(fault, injectionRate, enabled);
policy.Invoking(x => x.Execute((ctx) => { executed = true; }, context))
.ShouldThrowExactly <Exception>();
executed.Should().BeFalse();
}
public async Task InjectLatency_Context_Free_Should_Not_Introduce_Delay_If_Dissabled()
{
var executed = false;
var policy = MonkeyPolicy.InjectLatencyAsync(with =>
with.Latency(TimeSpan.FromMilliseconds(500))
.InjectionRate(0.6)
.Enabled(false)
);
Func <Task> actionAsync = () => { executed = true; return(TaskHelper.EmptyTask); };
await policy.ExecuteAsync(actionAsync);
executed.Should().BeTrue();
_totalTimeSlept.Should().Be(0);
}
public void Given_enabled_and_randomly_within_threshold_should_inject_behaviour()
{
Boolean userDelegateExecuted = false;
Boolean injectedBehaviourExecuted = false;
var policy = MonkeyPolicy.InjectBehaviour(with =>
with.Behaviour(() => { injectedBehaviourExecuted = true; })
.InjectionRate(0.6)
.Enabled());
policy.Execute(() => { userDelegateExecuted = true; });
userDelegateExecuted.Should().BeTrue();
injectedBehaviourExecuted.Should().BeTrue();
}
public IEnumerable <string> Get()
{
var isEnabled = true;
var fault = new SocketException(errorCode: 10013);
var chaosPolicy = MonkeyPolicy.InjectException(with =>
with.Fault(fault)
.InjectionRate(0.5) // Fail 50% of requests
//.InjectionRate(1) // Used to simulate circuit breaker
.Enabled(isEnabled));
var result = chaosPolicy.Execute(() => GetSomeString());
return(result);
}
public void InjectFault_With_Context_Should_not_execute_user_delegate_async_with_all_values_set()
{
string failureMessage = "Failure Message";
Boolean executed = false;
Context context = new Context();
context["ShouldFail"] = true;
context["Message"] = failureMessage;
context["InjectionRate"] = 0.6;
Func <Context, Task <ResultPrimitive> > actionAsync = (ctx) =>
{
executed = true;
return(Task.FromResult(ResultPrimitive.Good));
};
Func <Context, CancellationToken, Task <Exception> > fault = (ctx, cts) =>
{
if (ctx["Message"] != null)
{
Exception ex = new InvalidOperationException(ctx["Message"].ToString());
return(Task.FromResult(ex));
}
return(Task.FromResult(new Exception()));
};
Func <Context, Task <Double> > injectionRate = (ctx) =>
{
double rate = 0;
if (ctx["InjectionRate"] != null)
{
rate = (double)ctx["InjectionRate"];
}
return(Task.FromResult(rate));
};
Func <Context, Task <bool> > enabled = (ctx) =>
{
return(Task.FromResult((bool)ctx["ShouldFail"]));
};
var policy = MonkeyPolicy.InjectFaultAsync <ResultPrimitive>(fault, injectionRate, enabled);
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync, context))
.ShouldThrowExactly <InvalidOperationException>();
executed.Should().BeFalse();
}
public void InjectFaultWith_Context_Should_not_execute_user_delegate_full_context()
{
string failureMessage = "Failure Message";
Boolean executed = false;
Context context = new Context
{
["ShouldFail"] = true,
["Message"] = failureMessage,
["InjectionRate"] = 0.6
};
Func <Context, ResultPrimitive> action = (ctx) => { executed = true; return(ResultPrimitive.Good); };
Func <Context, CancellationToken, Exception> fault = (ctx, ct) =>
{
if (ctx["Message"] != null)
{
return(new InvalidOperationException(ctx["Message"].ToString()));
}
return(new Exception());
};
Func <Context, CancellationToken, double> injectionRate = (ctx, ct) =>
{
if (ctx["InjectionRate"] != null)
{
return((double)ctx["InjectionRate"]);
}
return(0);
};
Func <Context, CancellationToken, bool> enabled = (ctx, ct) =>
{
return((bool)ctx["ShouldFail"]);
};
var policy = MonkeyPolicy.InjectResult <ResultPrimitive>(with =>
with.Fault(fault)
.InjectionRate(injectionRate)
.EnabledWhen(enabled)
);
policy.Invoking(x => x.Execute(action, context))
.ShouldThrowExactly <InvalidOperationException>();
executed.Should().BeFalse();
}
public void Should_inject_behaviour_before_executing_user_delegate()
{
Boolean userDelegateExecuted = false;
Boolean injectedBehaviourExecuted = false;
var policy = MonkeyPolicy.InjectBehaviour(() =>
{
userDelegateExecuted.Should().BeFalse(); // Not yet executed at the time the injected behaviour runs.
injectedBehaviourExecuted = true;
}, 0.6, () => true);
policy.Execute(() => { userDelegateExecuted = true; });
userDelegateExecuted.Should().BeTrue();
injectedBehaviourExecuted.Should().BeTrue();
}
public async Task GetManifestWithLatency()
{
var chaosPolicy = MonkeyPolicy.InjectLatencyAsync(with =>
with.Latency(TimeSpan.FromSeconds(10))
.InjectionRate(0.02)
.Enabled(true));
var foo = new List <Task <HttpResponseMessage> >();
for (int i = 0; i < 10; i++)
{
foo.Add(chaosPolicy.ExecuteAsync(() => _client.GetAsync(_psapiUrl)));
}
await Task.WhenAll(foo);
}
public void InjectFaultWith_Context_Should_not_execute_user_delegate_default_context()
{
Boolean executed = false;
Context context = new Context();
Func <Context, ResultPrimitive> action = (ctx) => { executed = true; return(ResultPrimitive.Good); };
Func <Context, Exception> fault = (ctx) => new Exception();
Func <Context, double> injectionRate = (ctx) => 0.6;
Func <Context, bool> enabled = (ctx) => true;
var policy = MonkeyPolicy.InjectFault <ResultPrimitive>(fault, injectionRate, enabled);
policy.Invoking(x => x.Execute(action, context))
.ShouldThrow <Exception>();
executed.Should().BeFalse();
}
public void InjectLatency_Context_Free_Should_Not_Introduce_Delay_If_Dissabled()
{
var executed = false;
var policy = MonkeyPolicy.InjectLatency <ResultPrimitive>(with =>
with.Latency(TimeSpan.FromMilliseconds(500))
.InjectionRate(0.6)
.Enabled(false)
);
Func <ResultPrimitive> action = () => { executed = true; return(ResultPrimitive.Good); };
var result = policy.Execute(action);
executed.Should().BeTrue();
result.Should().Be(ResultPrimitive.Good);
_totalTimeSlept.Should().Be(0);
}
public void InjectFault_Context_Free_Enabled_Should_execute_user_delegate_async()
{
Exception fault = new Exception();
var policy = MonkeyPolicy.InjectExceptionAsync(with =>
with.Fault(fault)
.InjectionRate(0.3)
.Enabled()
);
Boolean executed = false;
Func <Task> actionAsync = () => { executed = true; return(TaskHelper.EmptyTask); };
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync)).ShouldNotThrow <Exception>();
executed.Should().BeTrue();
}
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.InjectResult <ResultPrimitive>(with =>
with.Result(fault)
.InjectionRate(0.4)
.Enabled()
);
ResultPrimitive response = policy.Execute(action);
response.Should().Be(ResultPrimitive.Good);
executed.Should().BeTrue();
}
public void InjectFault_Context_Free_Enabled_Should_not_execute_user_delegate_async()
{
string exceptionMessage = "exceptionMessage";
Exception fault = new Exception(exceptionMessage);
var policy = MonkeyPolicy.InjectExceptionAsync(with =>
with.Fault(fault)
.InjectionRate(0.6)
.Enabled()
);
Boolean executed = false;
Func <Task> actionAsync = () => { executed = true; return(TaskHelper.EmptyTask); };
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync)).ShouldThrowExactly <Exception>().WithMessage(exceptionMessage);
executed.Should().BeFalse();
}
public void Should_inject_behaviour_before_executing_user_delegate()
{
Boolean userDelegateExecuted = false;
Boolean injectedBehaviourExecuted = false;
var policy = MonkeyPolicy.InjectBehaviourAsync(() =>
{
userDelegateExecuted.Should().BeFalse(); // Not yet executed at the time the injected behaviour runs.
injectedBehaviourExecuted = true;
return(Task.CompletedTask);
}, 0.6, () => Task.FromResult(true));
policy.ExecuteAsync(() => { userDelegateExecuted = true; return(Task.CompletedTask); });
userDelegateExecuted.Should().BeTrue();
injectedBehaviourExecuted.Should().BeTrue();
}
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 void InjectFault_Context_Free_Enabled_Should_execute_user_delegate_async()
{
string exceptionMessage = "exceptionMessage";
Exception fault = new Exception(exceptionMessage);
Boolean executed = false;
Func <Task <ResultPrimitive> > actionAsync = () => { executed = true; return(Task.FromResult(ResultPrimitive.Good)); };
var policy = MonkeyPolicy.InjectResultAsync <ResultPrimitive>(with =>
with.Fault <ResultPrimitive>(fault)
.InjectionRate(0.3)
.Enabled()
);
policy.Awaiting(async x => await x.ExecuteAsync(actionAsync))
.ShouldNotThrow <Exception>();
executed.Should().BeTrue();
}
public void InjectFault_Context_Free_Enabled_Should_execute_user_delegate()
{
Exception fault = new Exception("test");
var policy = MonkeyPolicy.InjectException(with =>
with.Fault(fault)
.InjectionRate(0.3)
.Enabled()
);
Boolean executed = false;
policy.Invoking(x => x.Execute(() => { executed = true; }))
.ShouldNotThrow <Exception>();
executed.Should().BeTrue();
}
public void InjectFault_Context_Free_Enabled_Should_execute_user_delegate_not_throw_if_injected_fault_is_permitted_null()
{
Exception fault = null;
var policy = MonkeyPolicy.InjectException(with =>
with.Fault(fault)
.InjectionRate(0.6)
.Enabled()
);
Boolean executed = false;
policy.Invoking(x => x.Execute(() => { executed = true; }))
.ShouldNotThrow <Exception>();
executed.Should().BeTrue();
}