EdgeDegreesPairTest.java example

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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package org.apache.flink.graph.asm.degree.annotate.directed;

import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.graph.Edge;
import org.apache.flink.graph.asm.AsmTestBase;
import org.apache.flink.graph.asm.dataset.ChecksumHashCode;
import org.apache.flink.graph.asm.dataset.ChecksumHashCode.Checksum;
import org.apache.flink.graph.asm.degree.annotate.directed.VertexDegrees.Degrees;
import org.apache.flink.test.util.TestBaseUtils;
import org.apache.flink.types.IntValue;
import org.apache.flink.types.LongValue;
import org.apache.flink.types.NullValue;
import org.junit.Test;

import static org.junit.Assert.assertEquals;

public class EdgeDegreesPairTest
extends AsmTestBase {

	@Test
	public void testWithSimpleGraph()
			throws Exception {
		String expectedResult =
			"(0,1,((null),(2,2,0),(3,0,3)))\n" +
			"(0,2,((null),(2,2,0),(3,2,1)))\n" +
			"(2,1,((null),(3,2,1),(3,0,3)))\n" +
			"(2,3,((null),(3,2,1),(4,2,2)))\n" +
			"(3,1,((null),(4,2,2),(3,0,3)))\n" +
			"(3,4,((null),(4,2,2),(1,0,1)))\n" +
			"(5,3,((null),(1,1,0),(4,2,2)))";

		DataSet<Edge<IntValue, Tuple3<NullValue, Degrees, Degrees>>> degreesPair = directedSimpleGraph
			.run(new EdgeDegreesPair<IntValue, NullValue, NullValue>());

		TestBaseUtils.compareResultAsText(degreesPair.collect(), expectedResult);
	}

	@Test
	public void testWithRMatGraph()
			throws Exception {
		DataSet<Edge<LongValue, Tuple3<NullValue, Degrees, Degrees>>> degreesPair = directedRMatGraph(10, 16)
			.run(new EdgeDegreesPair<LongValue, NullValue, NullValue>());

		Checksum checksum = new ChecksumHashCode<Edge<LongValue, Tuple3<NullValue, Degrees, Degrees>>>()
			.run(degreesPair)
			.execute();

		assertEquals(12009, checksum.getCount());
		assertEquals(0x0000176fe94702a3L, checksum.getChecksum());
	}
}