/*
* 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.flink.streaming.runtime.operators.windowing;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.junit.Assert;
import org.junit.Test;
import java.util.concurrent.TimeUnit;
public class TimeWindowTest {
@Test
public void testGetWindowStartWithOffset() {
//[0,7),[7,14),[14,21)...
long offset = 0;
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(1,offset,7),0);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(6,offset,7),0);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(7,offset,7),7);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(8,offset,7),7);
//[-4,3),[3,10),[10,17)...
offset = 3;
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(1,offset,7),-4);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(2,offset,7),-4);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(3,offset,7),3);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(9,offset,7),3);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(10,offset,7),10);
//[-2,5),[5,12),[12,19)...
offset = -2;
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(1,offset,7),-2);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(-2,offset,7),-2);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(3,offset,7),-2);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(4,offset,7),-2);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(7,offset,7),5);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(12,offset,7),12);
// for GMT+8:00
offset = - TimeUnit.HOURS.toMillis(8);
long size = TimeUnit.DAYS.toMillis(1);
Assert.assertEquals(TimeWindow.getWindowStartWithOffset(1470902048450l,offset,size),1470844800000l);
}
}