| /* |
| * 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.beam.sdk.testing; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| import java.util.List; |
| import java.util.Set; |
| import org.apache.beam.sdk.io.BoundedSource; |
| import org.apache.beam.sdk.io.BoundedSource.BoundedReader; |
| import org.apache.beam.sdk.io.CountingSource; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Sets; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link SourceTestUtils}. */ |
| @RunWith(JUnit4.class) |
| public class SourceTestUtilsTest { |
| |
| @Test |
| public void testToUnsplittableSource() throws Exception { |
| PipelineOptions options = PipelineOptionsFactory.create(); |
| BoundedSource<Long> baseSource = CountingSource.upTo(100); |
| BoundedSource<Long> unsplittableSource = SourceTestUtils.toUnsplittableSource(baseSource); |
| List<?> splits = unsplittableSource.split(1, options); |
| assertEquals(1, splits.size()); |
| assertEquals(unsplittableSource, splits.get(0)); |
| |
| BoundedReader<Long> unsplittableReader = unsplittableSource.createReader(options); |
| assertEquals(0, unsplittableReader.getFractionConsumed(), 1e-15); |
| |
| Set<Long> expected = Sets.newHashSet(SourceTestUtils.readFromSource(baseSource, options)); |
| Set<Long> actual = Sets.newHashSet(); |
| actual.addAll(SourceTestUtils.readNItemsFromUnstartedReader(unsplittableReader, 40)); |
| assertNull(unsplittableReader.splitAtFraction(0.5)); |
| actual.addAll(SourceTestUtils.readRemainingFromReader(unsplittableReader, true /* started */)); |
| assertEquals(1, unsplittableReader.getFractionConsumed(), 1e-15); |
| |
| assertEquals(100, actual.size()); |
| assertEquals(Sets.newHashSet(expected), Sets.newHashSet(actual)); |
| } |
| } |