| /* |
| * 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.io.synthetic; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import org.apache.beam.sdk.testing.PAssert; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.apache.beam.sdk.transforms.Create; |
| import org.apache.beam.sdk.transforms.Keys; |
| import org.apache.beam.sdk.transforms.ParDo; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; |
| import org.apache.commons.math3.distribution.ConstantRealDistribution; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link SyntheticStep}. */ |
| @RunWith(JUnit4.class) |
| public class SyntheticStepTest { |
| @Rule public final ExpectedException thrown = ExpectedException.none(); |
| @Rule public final transient TestPipeline p = TestPipeline.create(); |
| |
| private byte[] intToByteArray(int value) { |
| return ByteBuffer.allocate(4).putInt(value).array(); |
| } |
| |
| @Test |
| public void testSyntheticStepWithPreservingInputKeyDistribution() throws Exception { |
| SyntheticStep.Options options = |
| SyntheticTestUtils.optionsFromString( |
| "{\"outputRecordsPerInputRecord\": 2," |
| + " \"preservesInputKeyDistribution\": true," |
| + "\"keySizeBytes\": 10," |
| + "\"valueSizeBytes\": 20," |
| + "\"numHotKeys\": 3," |
| + "\"hotKeyFraction\": 0.3," |
| + "\"seed\": 123456}", |
| SyntheticStep.Options.class); |
| options.delayDistribution = |
| SyntheticOptions.fromRealDistribution(new ConstantRealDistribution(10)); |
| |
| PCollection<byte[]> result = |
| p.apply( |
| Create.of( |
| ImmutableList.of( |
| KV.of(intToByteArray(1), intToByteArray(11)), |
| KV.of(intToByteArray(2), intToByteArray(22)), |
| KV.of(intToByteArray(3), intToByteArray(33))))) |
| .apply(ParDo.of(new SyntheticStep(options))) |
| .apply(Keys.create()); |
| |
| List<byte[]> expected = |
| ImmutableList.of( |
| intToByteArray(1), |
| intToByteArray(1), |
| intToByteArray(2), |
| intToByteArray(2), |
| intToByteArray(3), |
| intToByteArray(3)); |
| PAssert.that(result).containsInAnyOrder(expected); |
| p.run().waitUntilFinish(); |
| } |
| |
| @Test |
| public void testSyntheticStepWithoutPreservingInputKeyDistribution() throws Exception { |
| SyntheticStep.Options options = |
| SyntheticTestUtils.optionsFromString( |
| "{\"outputRecordsPerInputRecord\": 2," |
| + " \"preservesInputKeyDistribution\": false," |
| + "\"keySizeBytes\": 10," |
| + "\"valueSizeBytes\": 20," |
| + "\"numHotKeys\": 3," |
| + "\"hotKeyFraction\": 0.3," |
| + "\"seed\": 123456}", |
| SyntheticStep.Options.class); |
| options.delayDistribution = |
| SyntheticOptions.fromRealDistribution(new ConstantRealDistribution(10)); |
| |
| PCollection<KV<byte[], byte[]>> result = |
| p.apply(Create.of(ImmutableList.of(KV.of(intToByteArray(1), intToByteArray(11))))) |
| .apply(ParDo.of(new SyntheticStep(options))); |
| |
| PAssert.that(result) |
| .satisfies( |
| (Iterable<KV<byte[], byte[]>> input) -> { |
| int count = 0; |
| for (KV<byte[], byte[]> elm : input) { |
| count += 1; |
| assertEquals(10, elm.getKey().length); |
| assertEquals(20, elm.getValue().length); |
| } |
| assertEquals(2, count); |
| return null; |
| }); |
| p.run().waitUntilFinish(); |
| } |
| } |