/*
* 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.kafka.streams.kstream;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class SessionWindowsTest {
@Test
public void shouldSetWindowGap() {
final long anyGap = 42L;
assertEquals(anyGap, SessionWindows.with(anyGap).inactivityGap());
}
@Test
public void shouldSetWindowRetentionTime() {
final long anyRetentionTime = 42L;
assertEquals(anyRetentionTime, SessionWindows.with(1).until(anyRetentionTime).maintainMs());
}
@Test(expected = IllegalArgumentException.class)
public void windowSizeMustNotBeNegative() {
SessionWindows.with(-1);
}
@Test(expected = IllegalArgumentException.class)
public void windowSizeMustNotBeZero() {
SessionWindows.with(0);
}
@Test
public void retentionTimeShouldBeGapIfGapIsLargerThanDefaultRetentionTime() {
final long windowGap = 2 * Windows.DEFAULT_MAINTAIN_DURATION_MS;
assertEquals(windowGap, SessionWindows.with(windowGap).maintainMs());
}
@Test
public void retentionTimeMustNotBeNegative() {
final SessionWindows windowSpec = SessionWindows.with(42);
try {
windowSpec.until(41);
fail("should not accept retention time smaller than gap");
} catch (final IllegalArgumentException e) {
// expected
}
}
}