| /* |
| * 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.transforms; |
| |
| import static org.apache.beam.sdk.testing.CombineFnTester.testCombineFn; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.testing.CoderProperties; |
| import org.apache.beam.sdk.transforms.Mean.CountSum; |
| import org.apache.beam.sdk.transforms.Mean.CountSumCoder; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for Mean. */ |
| @RunWith(JUnit4.class) |
| public class MeanTest { |
| |
| @Test |
| public void testMeanGetNames() { |
| assertEquals("Combine.globally(Mean)", Mean.globally().getName()); |
| assertEquals("Combine.perKey(Mean)", Mean.perKey().getName()); |
| } |
| |
| private static final Coder<CountSum<Number>> TEST_CODER = new CountSumCoder<>(); |
| |
| private static final List<CountSum<Number>> TEST_VALUES = |
| Arrays.asList(new CountSum<>(1, 5.7), new CountSum<>(42, 42.0), new CountSum<>(29, 2.2)); |
| |
| @Test |
| public void testCountSumCoderEncodeDecode() throws Exception { |
| for (CountSum<Number> value : TEST_VALUES) { |
| CoderProperties.coderDecodeEncodeEqual(TEST_CODER, value); |
| } |
| } |
| |
| @Test |
| public void testCountSumCoderSerializable() throws Exception { |
| CoderProperties.coderSerializable(TEST_CODER); |
| } |
| |
| @Test |
| public void testMeanFn() throws Exception { |
| testCombineFn(Mean.of(), Lists.newArrayList(1, 2, 3, 4), 2.5); |
| } |
| } |