| /* |
| * 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.test.example.java; |
| |
| import org.apache.flink.examples.java.graph.PageRank; |
| import org.apache.flink.test.testdata.PageRankData; |
| import org.apache.flink.test.util.MultipleProgramsTestBase; |
| import org.apache.flink.util.FileUtils; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| import java.io.File; |
| import java.util.UUID; |
| |
| /** Test for {@link PageRank}. */ |
| @RunWith(Parameterized.class) |
| public class PageRankITCase extends MultipleProgramsTestBase { |
| |
| public PageRankITCase(TestExecutionMode mode) { |
| super(mode); |
| } |
| |
| private String verticesPath; |
| private String edgesPath; |
| private String resultPath; |
| private String expected; |
| |
| @Rule public TemporaryFolder tempFolder = new TemporaryFolder(); |
| |
| @Before |
| public void before() throws Exception { |
| final File folder = tempFolder.newFolder(); |
| final File resultFile = new File(folder, UUID.randomUUID().toString()); |
| resultPath = resultFile.toURI().toString(); |
| |
| File verticesFile = tempFolder.newFile(); |
| FileUtils.writeFileUtf8(verticesFile, PageRankData.VERTICES); |
| |
| File edgesFile = tempFolder.newFile(); |
| FileUtils.writeFileUtf8(edgesFile, PageRankData.EDGES); |
| |
| verticesPath = verticesFile.toURI().toString(); |
| edgesPath = edgesFile.toURI().toString(); |
| } |
| |
| @After |
| public void after() throws Exception { |
| compareKeyValuePairsWithDelta(expected, resultPath, " ", 0.01); |
| } |
| |
| @Test |
| public void testPageRankSmallNumberOfIterations() throws Exception { |
| PageRank.main( |
| new String[] { |
| "--pages", verticesPath, |
| "--links", edgesPath, |
| "--output", resultPath, |
| "--numPages", PageRankData.NUM_VERTICES + "", |
| "--iterations", "3" |
| }); |
| expected = PageRankData.RANKS_AFTER_3_ITERATIONS; |
| } |
| |
| @Test |
| public void testPageRankWithConvergenceCriterion() throws Exception { |
| PageRank.main( |
| new String[] { |
| "--pages", verticesPath, |
| "--links", edgesPath, |
| "--output", resultPath, |
| "--numPages", PageRankData.NUM_VERTICES + "", |
| "--vertices", "1000" |
| }); |
| expected = PageRankData.RANKS_AFTER_EPSILON_0_0001_CONVERGENCE; |
| } |
| } |