public async Task DeveloperForgetsEndPrepare()
{
var exceptionCount = 0;
var failureCount = 0;
var successCount = 0;
var profile = RetryLogic
.BeginPrepare()
.Handle <FileNotFoundException>()
.AtMost(10)
.WithConstantInterval(TimeSpan.FromMilliseconds(0))
.OnException <FileNotFoundException>(e => ++ exceptionCount)
.OnFailure(() => ++ failureCount);
////.EndPrepare(); // developer forgets tha line
////await RetryLogic.DoAsync(ActionThrowExceptionAsync, profile)
try
{
await profile.DoAsync(ActionThrowExceptionAsync)
.AtMost(5)
.OnSuccess(x =>
{
++successCount;
})
.RunAsync();
Assert.Fail("Should have thrown a InvalidOperationException");
}
catch (InvalidOperationException ex)
{
// ok
}
}
public async Task ActionAsync_Should_Be_Tried_3Times_With_ConstantInterval()
{
var exceptionCount = 0;
var failureCount = 0;
var successCount = 0;
var watch = new Stopwatch();
watch.Start();
var profile = RetryLogic
.BeginPrepare()
.Handle <FileNotFoundException>()
.AtMost(3)
.WithConstantInterval(TimeSpan.FromMilliseconds(2000))
.WithTrace(true)
.OnException <FileNotFoundException>(e => ++ exceptionCount)
.OnFailure(() => ++ failureCount)
.EndPrepare();
////await RetryLogic.DoAsync(ActionThrowExceptionAsync, profile)
await profile.DoAsync(ActionThrowExceptionAsync)
.OnSuccess(x =>
{
++successCount;
})
.RunAsync();
watch.Stop();
watch.Elapsed.ShouldBeGreaterThanOrEqualTo(TimeSpan.FromMilliseconds(2000 * 2));
exceptionCount.ShouldEqual(3);
failureCount.ShouldEqual(1);
successCount.ShouldEqual(0);
}
public async Task ActionAsync_Should_Try_10_Times()
{
var exceptionCount = 0;
var failureCount = 0;
var successCount = 0;
var watch = new Stopwatch();
watch.Start();
var profile = RetryLogic
.BeginPrepare()
.Handle <FileNotFoundException>()
.AtMost(10)
.WithConstantInterval(TimeSpan.FromMilliseconds(0))
.OnException <FileNotFoundException>(e => ++ exceptionCount)
.OnFailure(() => ++ failureCount)
.EndPrepare();
await profile.DoAsync(ActionThrowExceptionAsync)
.OnSuccess(x =>
{
++successCount;
})
.RunAsync();
watch.Stop();
exceptionCount.ShouldEqual(10);
failureCount.ShouldEqual(1);
successCount.ShouldEqual(0);
}
public async Task ActionAsync_Should_Throw_An_Exception()
{
var exceptionCount = 0;
var failureCount = 0;
var successCount = 0;
var watch = new Stopwatch();
watch.Start();
var profile = RetryLogic
.BeginPrepare()
.Handle <NullReferenceException>()
.AtMost(3)
.WithConstantInterval(TimeSpan.FromMilliseconds(2000))
.WithTrace(true)
.OnException <FileNotFoundException>(e => ++ exceptionCount)
.OnFailure(() => ++ failureCount)
.EndPrepare();
try
{
////await RetryLogic.DoAsync(ActionThrowExceptionAsync, profile)
await profile.DoAsync(ActionThrowExceptionAsync)
.OnSuccess(x =>
{
++successCount;
})
.RunAsync();
}
catch (Exception ex)
{
ex.ShouldBeType(typeof(FileNotFoundException));
}
watch.Stop();
exceptionCount.ShouldEqual(0);
failureCount.ShouldEqual(0);
successCount.ShouldEqual(0);
}