public async Task Given_bad_http_responses_then_retry_delay_durations_should_increase()
{
var handler = new StubMessageHandler();
var nAttempts = 2;
for (int i = 0; i < nAttempts; i++)
{
handler.QueueResponse(StubResponse.WithIOError());
}
handler.QueueResponse(StubResponse.StartStream());
var evt = new EventSource(new Configuration(_uri, handler));
var backoffs = new List <TimeSpan>();
evt.Error += (_, e) =>
{
backoffs.Add(evt.BackOffDelay);
if (backoffs.Count >= nAttempts)
{
evt.Close();
}
};
await evt.StartAsync();
Assert.NotEmpty(backoffs);
Assert.NotEqual(backoffs[0], backoffs[1]);
Assert.True(backoffs[1] > backoffs[0]);
}