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/*
* Copyright 2014 Open Networking Laboratory
*
* Licensed 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.onosproject.net.intent.constraint;
import com.google.common.testing.EqualsTester;
import org.junit.Before;
import org.junit.Test;
import org.onosproject.net.Annotations;
import org.onosproject.net.DefaultAnnotations;
import org.onosproject.net.DefaultLink;
import org.onosproject.net.DefaultPath;
import org.onosproject.net.DeviceId;
import org.onosproject.net.Link;
import org.onosproject.net.Path;
import org.onosproject.net.PortNumber;
import org.onosproject.net.provider.ProviderId;
import org.onosproject.net.resource.link.LinkResourceService;
import java.time.Duration;
import java.time.temporal.ChronoUnit;
import java.util.Arrays;
import static org.easymock.EasyMock.createMock;
import static org.hamcrest.Matchers.closeTo;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import static org.onosproject.net.AnnotationKeys.LATENCY;
import static org.onosproject.net.DefaultLinkTest.cp;
import static org.onosproject.net.DeviceId.deviceId;
import static org.onosproject.net.Link.Type.DIRECT;
public class LatencyConstraintTest {
private static final DeviceId DID1 = deviceId("of:1");
private static final DeviceId DID2 = deviceId("of:2");
private static final DeviceId DID3 = deviceId("of:3");
private static final PortNumber PN1 = PortNumber.portNumber(1);
private static final PortNumber PN2 = PortNumber.portNumber(2);
private static final PortNumber PN3 = PortNumber.portNumber(3);
private static final PortNumber PN4 = PortNumber.portNumber(4);
private static final ProviderId PROVIDER_ID = new ProviderId("of", "foo");
private static final String LATENCY1 = "3.0";
private static final String LATENCY2 = "4.0";
private LatencyConstraint sut;
private LinkResourceService linkResourceService;
private Path path;
private Link link1;
private Link link2;
@Before
public void setUp() {
linkResourceService = createMock(LinkResourceService.class);
Annotations annotations1 = DefaultAnnotations.builder().set(LATENCY, LATENCY1).build();
Annotations annotations2 = DefaultAnnotations.builder().set(LATENCY, LATENCY2).build();
link1 = new DefaultLink(PROVIDER_ID, cp(DID1, PN1), cp(DID2, PN2), DIRECT, annotations1);
link2 = new DefaultLink(PROVIDER_ID, cp(DID2, PN3), cp(DID3, PN4), DIRECT, annotations2);
path = new DefaultPath(PROVIDER_ID, Arrays.asList(link1, link2), 10);
}
/**
* Tests the path latency is less than the supplied constraint.
*/
@Test
public void testLessThanLatency() {
sut = new LatencyConstraint(Duration.of(10, ChronoUnit.MICROS));
assertThat(sut.validate(path, linkResourceService), is(true));
}
/**
* Tests the path latency is more than the supplied constraint.
*/
@Test
public void testMoreThanLatency() {
sut = new LatencyConstraint(Duration.of(3, ChronoUnit.MICROS));
assertThat(sut.validate(path, linkResourceService), is(false));
}
/**
* Tests the link latency is equal to "latency" annotated value.
*/
@Test
public void testCost() {
sut = new LatencyConstraint(Duration.of(10, ChronoUnit.MICROS));
assertThat(sut.cost(link1, linkResourceService), is(closeTo(Double.parseDouble(LATENCY1), 1.0e-6)));
assertThat(sut.cost(link2, linkResourceService), is(closeTo(Double.parseDouble(LATENCY2), 1.0e-6)));
}
/**
* Tests equality of the instances.
*/
@Test
public void testEquality() {
LatencyConstraint c1 = new LatencyConstraint(Duration.of(1, ChronoUnit.SECONDS));
LatencyConstraint c2 = new LatencyConstraint(Duration.of(1000, ChronoUnit.MILLIS));
LatencyConstraint c3 = new LatencyConstraint(Duration.of(2, ChronoUnit.SECONDS));
LatencyConstraint c4 = new LatencyConstraint(Duration.of(2000, ChronoUnit.MILLIS));
new EqualsTester()
.addEqualityGroup(c1, c2)
.addEqualityGroup(c3, c4)
.testEquals();
}
}
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