@Test
public void afterMaxFailsDelayIsStill310ms() {
for (int i = 0; i < 6; ++i) {
cut.begin().recordFailure();
}
assertThat(cut.begin().delay(), is(approx(310L, 10)));
}
@Test
public void succeedResetsDelayTo0ms() {
for (int i = 0; i < 4; ++i) {
cut.begin().recordFailure();
}
assertThat(cut.begin().delay(), is(approx(150L, 10)));
cut.begin().recordSuccess();
assertThat(cut.begin().delay(), is(0L));
}
@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)));
}
@Test
public void afterTwoFailsDelayIs30ms() {
cut.begin().recordFailure();
cut.begin().recordFailure();
assertThat(cut.begin().delay(), is(approx(30L, 10)));
}
@Test
public void afterOneFailDelayIs10ms() {
cut.begin().recordFailure();
assertThat(cut.begin().delay(), is(approx(10L, 10)));
}
@Test
public void initialDelayIsZero() {
Attempt attempt = cut.begin();
assertThat(attempt.delay(), is(0L));
}