attemptsExpected: 1,
			expectedIntervals: func(t *testing.T, delays []time.Duration, delaysRequested []time.Duration) {
				if reflect.DeepEqual(delays, []time.Duration{time.Second}) {
					return
				}
				if !reflect.DeepEqual(delays, delaysRequested) {
					t.Fatalf("sliding non-immediate should have equal delays: %v", cmp.Diff(delays, delaysRequested))
				}
			},
		},
	}

	for _, test := range tests {