@Test
public void successOnOldAttemptDoesNotResetDelay() {
cut.begin().recordFailure();
cut.begin().recordFailure();
Attempt attempt = cut.begin();
cut.begin().recordFailure();
assertThat(cut.begin().delay(), is(approx(70L, 10)));
attempt.recordSuccess();
assertThat(cut.begin().delay(), is(approx(70L, 10)));
}
@Test
public void failureOnOldAttemptDoesNotIncreaseDelay() {
for (int i = 0; i < 3; ++i) {
cut.begin().recordFailure();
}
Attempt attempt = cut.begin();
cut.begin().recordFailure();
assertThat(cut.begin().delay(), is(approx(150L, 10)));
attempt.recordFailure();
assertThat(cut.begin().delay(), is(approx(150L, 10)));
}
private void retry(final Attempt attempt, final int howLong)
throws IOException, InterruptedException {
final long start = new Date().getTime();
IOException lastE = null;
long timeLeft = howLong;
while (timeLeft > 0) {
try {
attempt.again();
return;
} catch (final IOException e) {
lastE = e;
}
final long now = new Date().getTime();
final long timePassed = now - start;
timeLeft = howLong - timePassed;
final long sleepTime = Math.max(3000, Math.min(timePassed, timeLeft));
Thread.sleep(sleepTime);
}
if (lastE != null) throw lastE;
throw new IOException("failed, and I don't know why");
}
@Test
public void initialDelayIsZero() {
Attempt attempt = cut.begin();
assertThat(attempt.delay(), is(0L));
}