public void Wrapping_two_policies_by_static_syntax_and_executing_should_wrap_outer_then_inner_around_delegate()
{
RetryPolicy retry = Policy.Handle <Exception>().RetryAsync(1); // Two tries in total: first try, plus one retry.
CircuitBreakerPolicy breaker = Policy.Handle <Exception>().CircuitBreakerAsync(2, TimeSpan.MaxValue);
PolicyWrap retryWrappingBreaker = Policy.WrapAsync(retry, breaker);
PolicyWrap breakerWrappingRetry = Policy.WrapAsync(breaker, retry);
// When the retry wraps the breaker, the retry (being outer) should cause the call to be put through the breaker twice - causing the breaker to break.
breaker.Reset();
retryWrappingBreaker.Awaiting(async x => await x.RaiseExceptionAsync <DivideByZeroException>(2))
.ShouldThrow <DivideByZeroException>();
breaker.CircuitState.Should().Be(CircuitState.Open);
// When the breaker wraps the retry, the retry (being inner) should retry twice before throwing the exception back on the breaker - the exception only hits the breaker once - so the breaker should not break.
breaker.Reset();
breakerWrappingRetry.Awaiting(async x => await x.RaiseExceptionAsync <DivideByZeroException>(2))
.ShouldThrow <DivideByZeroException>();
breaker.CircuitState.Should().Be(CircuitState.Closed);
}