fn exponential_backoff_with_jitter_seq()

in amazon-qldb-driver-core/src/retry.rs [136:159]

• 21 lines of code
• 2 McCabe index (conditional complexity)

    fn exponential_backoff_with_jitter_seq() {
        let ExponentialBackoffJitterTransactionRetryPolicy {
            base,
            cap,
            max_attempts,
        } = ExponentialBackoffJitterTransactionRetryPolicy::default();

        let mut seq = vec![0..10, 0..100, 0..1000, 0..5000]; // not super tight
        seq.reverse();

        for attempt_number in 1..=max_attempts {
            let sleep = exponential_backoff_with_jitter(base, cap, attempt_number);
            let expected = seq.pop().unwrap();
            assert!(
                expected.contains(&(sleep as u32)),
                "on attempt {} we should be sleeping in the range {:?} but we calculated {}",
                attempt_number,
                expected,
                sleep
            );
        }

        assert!(seq.is_empty());
    }