| /* |
| * 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.wayang.java.operators; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| import org.apache.commons.lang3.Validate; |
| import org.apache.wayang.core.types.DataSetType; |
| import org.apache.wayang.java.channels.JavaChannelInstance; |
| import org.apache.wayang.java.execution.JavaExecutor; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Test suite for {@link JavaObjectFileSource}. |
| */ |
| public class JavaObjectFileSourceTest extends JavaExecutionOperatorTestBase { |
| |
| @Test |
| public void testReading() throws IOException { |
| JavaExecutor javaExecutor = null; |
| try { |
| // Prepare the source. |
| final URL inputUrl = this.getClass().getResource("/0-to-10000.input"); |
| JavaObjectFileSource<Integer> source = new JavaObjectFileSource<>( |
| inputUrl.toString(), DataSetType.createDefault(Integer.class)); |
| |
| |
| // Execute. |
| JavaChannelInstance[] inputs = new JavaChannelInstance[]{}; |
| JavaChannelInstance[] outputs = new JavaChannelInstance[]{createStreamChannelInstance()}; |
| evaluate(source, inputs, outputs); |
| |
| // Verify. |
| Set<Integer> expectedValues = new HashSet<>(JavaObjectFileSourceTest.enumerateRange(10000)); |
| // Verify the outcome. |
| final List<Integer> result = outputs[0].<Integer>provideStream() |
| .collect(Collectors.toList()); |
| for (Object value : result) { |
| Assert.assertTrue("Value: " + value, expectedValues.remove(value)); |
| } |
| Assert.assertEquals(0, expectedValues.size()); |
| } finally { |
| if (javaExecutor != null) javaExecutor.dispose(); |
| } |
| |
| } |
| |
| private static List<Integer> enumerateRange(int to) { |
| Validate.isTrue(to >= 0); |
| List<Integer> range = new ArrayList<>(to); |
| for (int i = 0; i < to; i++) { |
| range.add(i); |
| } |
| return range; |
| } |
| } |