@Test
public void testAfterPaneWithGlobalWindowsAndCombining() throws Exception {
Duration windowDuration = Duration.millis(10);
ReduceFnTester<Integer, Integer, IntervalWindow> tester =
ReduceFnTester.combining(
FixedWindows.of(windowDuration),
AfterPane.<IntervalWindow>elementCountAtLeast(2),
AccumulationMode.DISCARDING_FIRED_PANES,
new SumIntegerFn().<String>asKeyedFn(),
VarIntCoder.of(),
Duration.millis(100));
tester.injectElements(
TimestampedValue.of(1, new Instant(1)), TimestampedValue.of(2, new Instant(9)));
assertThat(
tester.extractOutput(),
Matchers.contains(WindowMatchers.isSingleWindowedValue(Matchers.equalTo(3), 1, 0, 10)));
// This element should not be output because that trigger (which was one-time) has already
// gone off.
tester.injectElements(TimestampedValue.of(6, new Instant(2)));
assertThat(tester.extractOutput(), Matchers.emptyIterable());
assertTrue(tester.isMarkedFinished(new IntervalWindow(new Instant(0), new Instant(10))));
assertFalse(tester.isMarkedFinished(new IntervalWindow(new Instant(10), new Instant(20))));
tester.assertHasOnlyGlobalAndFinishedSetsFor(
new IntervalWindow(new Instant(0), new Instant(10)));
}
@Test
public void testAfterPaneWithFixedWindow() throws Exception {
Duration windowDuration = Duration.millis(10);
ReduceFnTester<Integer, Iterable<Integer>, IntervalWindow> tester =
ReduceFnTester.nonCombining(
FixedWindows.of(windowDuration),
AfterPane.<IntervalWindow>elementCountAtLeast(2),
AccumulationMode.DISCARDING_FIRED_PANES,
Duration.millis(100));
tester.injectElements(
TimestampedValue.of(1, new Instant(1)), // first in window [0, 10)
TimestampedValue.of(2, new Instant(9)));
assertThat(
tester.extractOutput(),
Matchers.contains(
WindowMatchers.isSingleWindowedValue(Matchers.containsInAnyOrder(1, 2), 1, 0, 10)));
// This element belongs in the window that has already fired. It should not be re-output because
// that trigger (which was one-time) has already gone off.
tester.injectElements(TimestampedValue.of(6, new Instant(2)));
assertThat(tester.extractOutput(), Matchers.emptyIterable());
assertTrue(tester.isMarkedFinished(new IntervalWindow(new Instant(0), new Instant(10))));
assertFalse(tester.isMarkedFinished(new IntervalWindow(new Instant(10), new Instant(20))));
tester.assertHasOnlyGlobalAndFinishedSetsFor(
new IntervalWindow(new Instant(0), new Instant(10)));
}
@Test
public void testAfterPaneWithMerging() throws Exception {
Duration windowDuration = Duration.millis(10);
ReduceFnTester<Integer, Iterable<Integer>, IntervalWindow> tester =
ReduceFnTester.nonCombining(
Sessions.withGapDuration(windowDuration),
AfterPane.<IntervalWindow>elementCountAtLeast(2),
AccumulationMode.DISCARDING_FIRED_PANES,
Duration.millis(100));
assertThat(tester.extractOutput(), Matchers.emptyIterable());
tester.injectElements(
TimestampedValue.of(1, new Instant(1)), // in [1, 11)
TimestampedValue.of(2, new Instant(2))); // in [2, 12)
assertThat(
tester.extractOutput(),
Matchers.contains(
WindowMatchers.isSingleWindowedValue(Matchers.containsInAnyOrder(1, 2), 1, 1, 12)));
// Because we closed the previous window, we don't have it around to merge with.
tester.injectElements(
TimestampedValue.of(3, new Instant(7)), // in [7, 17)
TimestampedValue.of(4, new Instant(8))); // in [8, 18)
assertThat(
tester.extractOutput(),
Matchers.contains(
WindowMatchers.isSingleWindowedValue(Matchers.containsInAnyOrder(3, 4), 7, 7, 18)));
assertTrue(tester.isMarkedFinished(new IntervalWindow(new Instant(1), new Instant(12))));
tester.assertHasOnlyGlobalAndFinishedSetsFor(
new IntervalWindow(new Instant(1), new Instant(12)),
new IntervalWindow(new Instant(7), new Instant(18)));
}