| /* |
| * 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.solr.common.util; |
| |
| import org.apache.solr.SolrTestCaseJ4; |
| import org.junit.Test; |
| |
| /** |
| * |
| */ |
| public class TestTimeSource extends SolrTestCaseJ4 { |
| |
| @Test |
| public void testEpochTime() throws Exception { |
| doTestEpochTime(TimeSource.CURRENT_TIME); |
| doTestEpochTime(TimeSource.NANO_TIME); |
| doTestEpochTime(TimeSource.get("simTime:50")); |
| } |
| |
| private void doTestEpochTime(TimeSource ts) throws Exception { |
| |
| // XXX the method below doesn't work reliably because |
| // XXX there could be a long thread context switch between these two calls: |
| // long prevTime = ts.getTimeNs(); |
| // long prevEpochTime = ts.getEpochTimeNs(); |
| |
| long[] prevTimeAndEpoch = ts.getTimeAndEpochNs(); |
| long delta = 500000000; // 500 ms |
| long maxDiff = 1000; |
| for (int i = 0; i < 10; i++) { |
| ts.sleep(500); |
| long[] curTimeAndEpoch = ts.getTimeAndEpochNs(); |
| long diffTime = prevTimeAndEpoch[0] + delta - curTimeAndEpoch[0]; |
| long diffEpoch = prevTimeAndEpoch[1] + delta - curTimeAndEpoch[1]; |
| assertTrue(ts + " diffTime=" + diffTime + ", diffEpoch=" + diffEpoch, Math.abs(diffTime - diffEpoch) < maxDiff); |
| prevTimeAndEpoch = curTimeAndEpoch; |
| } |
| } |
| } |