/*
 * 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.library;

import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.graph.Graph;
import org.apache.flink.graph.examples.data.TriangleCountData;
import org.apache.flink.test.util.MultipleProgramsTestBase;
import org.apache.flink.types.NullValue;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

import java.util.List;

@RunWith(Parameterized.class)
public class TriangleEnumeratorITCase extends MultipleProgramsTestBase {

	public TriangleEnumeratorITCase(TestExecutionMode mode) {
		super(mode);
	}

	@Test
	public void testTriangleEnumerator() throws Exception	{

		ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

		Graph<Long, NullValue, NullValue> graph = Graph.fromDataSet(TriangleCountData.getDefaultEdgeDataSet(env),
				env);

		List<Tuple3<Long, Long, Long>> actualOutput = graph.run(new TriangleEnumerator<Long, NullValue, NullValue>()).collect();
		List<Tuple3<Long, Long, Long>> expectedResult = TriangleCountData.getListOfTriangles();

		Assert.assertEquals(expectedResult.size(), actualOutput.size());
		for(Tuple3<Long, Long, Long> resultTriangle:actualOutput)	{
			Assert.assertTrue(expectedResult.indexOf(resultTriangle)>=0);
		}
	}
}