| /* |
| * 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.examples; |
| |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.nio.channels.FileChannel; |
| import java.nio.file.Files; |
| import java.nio.file.StandardOpenOption; |
| import java.util.Arrays; |
| import org.apache.beam.sdk.extensions.gcp.options.GcsOptions; |
| import org.apache.beam.sdk.extensions.gcp.util.GcsUtil; |
| import org.apache.beam.sdk.extensions.gcp.util.gcsfs.GcsPath; |
| import org.apache.beam.sdk.io.TextIO; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.apache.beam.sdk.transforms.Count; |
| import org.apache.beam.sdk.transforms.Filter; |
| import org.apache.beam.sdk.transforms.FlatMapElements; |
| import org.apache.beam.sdk.transforms.MapElements; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.sdk.values.TypeDescriptors; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| import org.mockito.Mockito; |
| |
| /** |
| * To keep {@link org.apache.beam.examples.kotlin.MinimalWordCount} simple, it is not factored or |
| * testable. This test file should be maintained with a copy of its code for a basic smoke test. |
| */ |
| @RunWith(JUnit4.class) |
| public class MinimalWordCountTestKotlin implements Serializable { |
| |
| @Rule public TestPipeline p = TestPipeline.create().enableAbandonedNodeEnforcement(false); |
| |
| /** A basic smoke test that ensures there is no crash at pipeline construction time. */ |
| @Test |
| public void testMinimalWordCount() throws Exception { |
| p.getOptions().as(GcsOptions.class).setGcsUtil(buildMockGcsUtil()); |
| |
| p.apply(TextIO.read().from("gs://apache-beam-samples/shakespeare/*")) |
| .apply( |
| FlatMapElements.into(TypeDescriptors.strings()) |
| .via((String word) -> Arrays.asList(word.split("[^a-zA-Z']+")))) |
| .apply(Filter.by((String word) -> !word.isEmpty())) |
| .apply(Count.perElement()) |
| .apply( |
| MapElements.into(TypeDescriptors.strings()) |
| .via( |
| (KV<String, Long> wordCount) -> |
| wordCount.getKey() + ": " + wordCount.getValue())) |
| .apply(TextIO.write().to("gs://your-output-bucket/and-output-prefix")); |
| } |
| |
| private GcsUtil buildMockGcsUtil() throws IOException { |
| GcsUtil mockGcsUtil = Mockito.mock(GcsUtil.class); |
| |
| // Any request to open gets a new bogus channel |
| Mockito.when(mockGcsUtil.open(Mockito.any(GcsPath.class))) |
| .then( |
| invocation -> |
| FileChannel.open( |
| Files.createTempFile("channel-", ".tmp"), |
| StandardOpenOption.CREATE, |
| StandardOpenOption.DELETE_ON_CLOSE)); |
| |
| // Any request for expansion returns a list containing the original GcsPath |
| // This is required to pass validation that occurs in TextIO during apply() |
| Mockito.when(mockGcsUtil.expand(Mockito.any(GcsPath.class))) |
| .then(invocation -> ImmutableList.of((GcsPath) invocation.getArguments()[0])); |
| |
| return mockGcsUtil; |
| } |
| } |