/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.beam.sdk.transforms.windowing;
import static org.junit.Assert.assertEquals;
import org.apache.beam.sdk.transforms.windowing.Trigger.OnceTrigger;
import org.joda.time.Instant;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link AfterFirst}.
*/
@RunWith(JUnit4.class)
public class AfterFirstTest {
@Test
public void testFireDeadline() throws Exception {
BoundedWindow window = new IntervalWindow(new Instant(0), new Instant(10));
assertEquals(new Instant(9),
AfterFirst.of(AfterWatermark.pastEndOfWindow(), AfterPane.elementCountAtLeast(4))
.getWatermarkThatGuaranteesFiring(window));
assertEquals(BoundedWindow.TIMESTAMP_MAX_VALUE,
AfterFirst.of(AfterPane.elementCountAtLeast(2), AfterPane.elementCountAtLeast(1))
.getWatermarkThatGuaranteesFiring(window));
}
@Test
public void testContinuation() throws Exception {
OnceTrigger trigger1 = AfterProcessingTime.pastFirstElementInPane();
OnceTrigger trigger2 = AfterWatermark.pastEndOfWindow();
Trigger afterFirst = AfterFirst.of(trigger1, trigger2);
assertEquals(
AfterFirst.of(trigger1.getContinuationTrigger(), trigger2.getContinuationTrigger()),
afterFirst.getContinuationTrigger());
}
@Test
public void testToString() {
Trigger trigger = AfterFirst.of(StubTrigger.named("t1"), StubTrigger.named("t2"));
assertEquals("AfterFirst.of(t1, t2)", trigger.toString());
}
}