/*
* 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.iterative;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.List;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.io.LocalCollectionOutputFormat;
import org.apache.flink.api.java.operators.IterativeDataSet;
import org.apache.flink.test.util.JavaProgramTestBase;
public class IdentityIterationITCase extends JavaProgramTestBase {
private List<Long> result = new ArrayList<Long>();
@Override
protected void testProgram() throws Exception {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
IterativeDataSet<Long> iteration = env.generateSequence(1, 10).iterate(100);
iteration.closeWith(iteration)
.output(new LocalCollectionOutputFormat<Long>(result));
env.execute();
}
@Override
protected void postSubmit() {
assertEquals(10, result.size());
long sum = 0;
for (Long l : result) {
sum += l;
}
assertEquals(55, sum);
}
}