| /* |
| * 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.flink.graph.generator; |
| |
| import org.apache.flink.api.java.io.DiscardingOutputFormat; |
| import org.apache.flink.graph.Graph; |
| import org.apache.flink.types.LongValue; |
| import org.apache.flink.types.NullValue; |
| |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * Tests for {@link CirculantGraph}. |
| */ |
| public class CirculantGraphTest extends GraphGeneratorTestBase { |
| |
| @Test |
| public void testGraph() throws Exception { |
| Graph<LongValue, NullValue, NullValue> graph = new CirculantGraph(env, 10) |
| .addRange(4, 3) |
| .generate(); |
| |
| String vertices = "0; 1; 2; 3; 4; 5; 6; 7; 8; 9"; |
| String edges = "0,4; 0,5; 0,6; 1,5; 1,6; 1,7; 2,6;" + |
| "2,7; 2,8; 3,7; 3,8; 3,9; 4,0; 4,8; 4,9;" + |
| "5,0; 5,1; 5,9; 6,0; 6,1; 6,2; 7,1; 7,2; 7,3;" + |
| "8,2; 8,3; 8,4; 9,3; 9,4; 9,5"; |
| |
| TestUtils.compareGraph(graph, vertices, edges); |
| } |
| |
| @Test |
| public void testGraphMetrics() throws Exception { |
| int vertexCount = 10; |
| int offset = 4; |
| int length = 2; |
| |
| Graph<LongValue, NullValue, NullValue> graph = new CirculantGraph(env, 10) |
| .addRange(offset, length) |
| .generate(); |
| |
| assertEquals(vertexCount, graph.numberOfVertices()); |
| assertEquals(vertexCount * length, graph.numberOfEdges()); |
| |
| long maxInDegree = graph.inDegrees().max(1).collect().get(0).f1.getValue(); |
| long maxOutDegree = graph.outDegrees().max(1).collect().get(0).f1.getValue(); |
| |
| assertEquals(length, maxInDegree); |
| assertEquals(length, maxOutDegree); |
| } |
| |
| @Test |
| public void testParallelism() throws Exception { |
| int parallelism = 2; |
| |
| Graph<LongValue, NullValue, NullValue> graph = new CirculantGraph(env, 10) |
| .addRange(4, 2) |
| .setParallelism(parallelism) |
| .generate(); |
| |
| graph.getVertices().output(new DiscardingOutputFormat<>()); |
| graph.getEdges().output(new DiscardingOutputFormat<>()); |
| |
| TestUtils.verifyParallelism(env, parallelism); |
| } |
| } |