/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
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*/
package io.crate.operation.reference.sys.node.local;
import io.crate.metadata.ReferenceImplementation;
import io.crate.monitor.ExtendedOsStats;
import io.crate.test.integration.CrateUnitTest;
import org.junit.Test;
import static org.mockito.Mockito.mock;
public class NodeOsExpressionTest extends CrateUnitTest {
@Test
public void testOsTimestampNotEvaluatedTwice() throws Exception {
ExtendedOsStats osStats = mock(ExtendedOsStats.class);
NodeOsExpression nodeOsExpression = new NodeOsExpression(osStats);
ReferenceImplementation timestampExpr = nodeOsExpression.getChildImplementation("timestamp");
Long ts1 = (Long) timestampExpr.value();
Thread.sleep(10L);
Long ts2 = (Long) timestampExpr.value();
assertEquals(ts1, ts2);
}
}