| /* |
| * 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.fn.harness.data; |
| |
| import static org.hamcrest.Matchers.contains; |
| import static org.hamcrest.Matchers.containsInAnyOrder; |
| import static org.junit.Assert.assertThat; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import org.apache.beam.sdk.fn.data.FnDataReceiver; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableList; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link MultiplexingFnDataReceiver}. */ |
| @RunWith(JUnit4.class) |
| public class MultiplexingFnDataReceiverTest { |
| @Rule public ExpectedException thrown = ExpectedException.none(); |
| |
| @Test |
| public void singleConsumer() throws Exception { |
| List<String> consumer = new ArrayList<>(); |
| FnDataReceiver<String> multiplexer = |
| MultiplexingFnDataReceiver.forConsumers( |
| ImmutableList.<FnDataReceiver<String>>of(consumer::add)); |
| |
| multiplexer.accept("foo"); |
| multiplexer.accept("bar"); |
| |
| assertThat(consumer, contains("foo", "bar")); |
| } |
| |
| @Test |
| public void singleConsumerException() throws Exception { |
| String message = "my_exception"; |
| FnDataReceiver<Integer> multiplexer = |
| MultiplexingFnDataReceiver.forConsumers( |
| ImmutableList.<FnDataReceiver<Integer>>of( |
| (Integer i) -> { |
| if (i > 1) { |
| throw new Exception(message); |
| } |
| })); |
| |
| multiplexer.accept(0); |
| multiplexer.accept(1); |
| thrown.expectMessage(message); |
| thrown.expect(Exception.class); |
| multiplexer.accept(2); |
| } |
| |
| @Test |
| public void multipleConsumers() throws Exception { |
| List<String> consumer = new ArrayList<>(); |
| Set<String> otherConsumer = new HashSet<>(); |
| FnDataReceiver<String> multiplexer = |
| MultiplexingFnDataReceiver.forConsumers( |
| ImmutableList.<FnDataReceiver<String>>of(consumer::add, otherConsumer::add)); |
| |
| multiplexer.accept("foo"); |
| multiplexer.accept("bar"); |
| multiplexer.accept("foo"); |
| |
| assertThat(consumer, contains("foo", "bar", "foo")); |
| assertThat(otherConsumer, containsInAnyOrder("foo", "bar")); |
| } |
| |
| @Test |
| public void multipleConsumersException() throws Exception { |
| String message = "my_exception"; |
| List<Integer> consumer = new ArrayList<>(); |
| FnDataReceiver<Integer> multiplexer = |
| MultiplexingFnDataReceiver.forConsumers( |
| ImmutableList.<FnDataReceiver<Integer>>of( |
| consumer::add, |
| (Integer i) -> { |
| if (i > 1) { |
| throw new Exception(message); |
| } |
| })); |
| |
| multiplexer.accept(0); |
| multiplexer.accept(1); |
| assertThat(consumer, containsInAnyOrder(0, 1)); |
| |
| thrown.expectMessage(message); |
| thrown.expect(Exception.class); |
| multiplexer.accept(2); |
| } |
| } |