/*
*
* 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.hadoop.hbase.util;
import org.apache.hadoop.hbase.MediumTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import static junit.framework.Assert.assertTrue;
import static junit.framework.Assert.fail;
/**
* Tests to make sure that the default environment edge conforms to appropriate
* behaviour.
*/
@Category(MediumTests.class)
public class TestDefaultEnvironmentEdge {
@Test
public void testGetCurrentTimeUsesSystemClock() {
DefaultEnvironmentEdge edge = new DefaultEnvironmentEdge();
long systemTime = System.currentTimeMillis();
long edgeTime = edge.currentTimeMillis();
assertTrue("System time must be either the same or less than the edge time",
systemTime < edgeTime || systemTime == edgeTime);
try {
Thread.sleep(1);
} catch (InterruptedException e) {
fail(e.getMessage());
}
long secondEdgeTime = edge.currentTimeMillis();
assertTrue("Second time must be greater than the first",
secondEdgeTime > edgeTime);
}
}