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/*
* Copyright 2014-2015 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.routing.bgp;
import org.hamcrest.Matchers;
import org.junit.Test;
import java.util.ArrayList;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.not;
import static org.junit.Assert.assertThat;
/**
* Unit tests for the BgpRouteEntry.AsPath class.
*/
public class AsPathTest {
/**
* Generates Path Segments.
*
* @return the generated Path Segments
*/
private ArrayList<BgpRouteEntry.PathSegment> generatePathSegments() {
ArrayList<BgpRouteEntry.PathSegment> pathSegments = new ArrayList<>();
byte pathSegmentType;
ArrayList<Long> segmentAsNumbers;
BgpRouteEntry.PathSegment pathSegment;
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_CONFED_SEQUENCE;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(1L);
segmentAsNumbers.add(2L);
segmentAsNumbers.add(3L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_CONFED_SET;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(4L);
segmentAsNumbers.add(5L);
segmentAsNumbers.add(6L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_SEQUENCE;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(7L);
segmentAsNumbers.add(8L);
segmentAsNumbers.add(9L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_SET;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(10L);
segmentAsNumbers.add(11L);
segmentAsNumbers.add(12L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
return pathSegments;
}
/**
* Generates an AS Path.
*
* @return a generated AS Path
*/
private BgpRouteEntry.AsPath generateAsPath() {
ArrayList<BgpRouteEntry.PathSegment> pathSegments =
generatePathSegments();
BgpRouteEntry.AsPath asPath = new BgpRouteEntry.AsPath(pathSegments);
return asPath;
}
/**
* Tests valid class constructor.
*/
@Test
public void testConstructor() {
BgpRouteEntry.AsPath asPath = generateAsPath();
String expectedString =
"AsPath{pathSegments=[" +
"PathSegment{type=AS_CONFED_SEQUENCE, segmentAsNumbers=[1, 2, 3]}, " +
"PathSegment{type=AS_CONFED_SET, segmentAsNumbers=[4, 5, 6]}, " +
"PathSegment{type=AS_SEQUENCE, segmentAsNumbers=[7, 8, 9]}, " +
"PathSegment{type=AS_SET, segmentAsNumbers=[10, 11, 12]}]}";
assertThat(asPath.toString(), is(expectedString));
}
/**
* Tests invalid class constructor for null Path Segments.
*/
@Test(expected = NullPointerException.class)
public void testInvalidConstructorNullPathSegments() {
ArrayList<BgpRouteEntry.PathSegment> pathSegments = null;
new BgpRouteEntry.AsPath(pathSegments);
}
/**
* Tests getting the fields of an AS Path.
*/
@Test
public void testGetFields() {
// Create the fields to compare against
ArrayList<BgpRouteEntry.PathSegment> pathSegments =
generatePathSegments();
// Generate the entry to test
BgpRouteEntry.AsPath asPath = generateAsPath();
assertThat(asPath.getPathSegments(), is(pathSegments));
}
/**
* Tests getting the AS Path Length.
*/
@Test
public void testGetAsPathLength() {
//
// NOTE:
// - AS_CONFED_SEQUENCE and AS_CONFED_SET are excluded
// - AS_SET counts as a single hop
//
BgpRouteEntry.AsPath asPath = generateAsPath();
assertThat(asPath.getAsPathLength(), is(4));
// Create an empty AS Path
ArrayList<BgpRouteEntry.PathSegment> pathSegments = new ArrayList<>();
asPath = new BgpRouteEntry.AsPath(pathSegments);
assertThat(asPath.getAsPathLength(), is(0));
}
/**
* Tests equality of {@link BgpRouteEntry.AsPath}.
*/
@Test
public void testEquality() {
BgpRouteEntry.AsPath asPath1 = generateAsPath();
BgpRouteEntry.AsPath asPath2 = generateAsPath();
assertThat(asPath1, is(asPath2));
}
/**
* Tests non-equality of {@link BgpRouteEntry.AsPath}.
*/
@Test
public void testNonEquality() {
BgpRouteEntry.AsPath asPath1 = generateAsPath();
// Setup AS Path 2
ArrayList<BgpRouteEntry.PathSegment> pathSegments = new ArrayList<>();
byte pathSegmentType;
ArrayList<Long> segmentAsNumbers;
BgpRouteEntry.PathSegment pathSegment;
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_CONFED_SEQUENCE;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(1L);
segmentAsNumbers.add(2L);
segmentAsNumbers.add(3L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_CONFED_SET;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(4L);
segmentAsNumbers.add(5L);
segmentAsNumbers.add(6L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_SEQUENCE;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(7L);
segmentAsNumbers.add(8L);
segmentAsNumbers.add(9L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
pathSegmentType = (byte) BgpConstants.Update.AsPath.AS_SET;
segmentAsNumbers = new ArrayList<>();
segmentAsNumbers.add(10L);
segmentAsNumbers.add(111L); // Different
segmentAsNumbers.add(12L);
pathSegment =
new BgpRouteEntry.PathSegment(pathSegmentType, segmentAsNumbers);
pathSegments.add(pathSegment);
//
BgpRouteEntry.AsPath asPath2 = new BgpRouteEntry.AsPath(pathSegments);
assertThat(asPath1, Matchers.is(not(asPath2)));
}
/**
* Tests object string representation.
*/
@Test
public void testToString() {
BgpRouteEntry.AsPath asPath = generateAsPath();
String expectedString =
"AsPath{pathSegments=[" +
"PathSegment{type=AS_CONFED_SEQUENCE, segmentAsNumbers=[1, 2, 3]}, " +
"PathSegment{type=AS_CONFED_SET, segmentAsNumbers=[4, 5, 6]}, " +
"PathSegment{type=AS_SEQUENCE, segmentAsNumbers=[7, 8, 9]}, " +
"PathSegment{type=AS_SET, segmentAsNumbers=[10, 11, 12]}]}";
assertThat(asPath.toString(), is(expectedString));
}
}
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