| /* |
| * 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.wayang.basic.function; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.apache.wayang.basic.data.Record; |
| import org.apache.wayang.basic.types.RecordType; |
| |
| import java.util.function.Function; |
| |
| /** |
| * Tests for the {@link ProjectionDescriptor}. |
| */ |
| public class ProjectionDescriptorTest { |
| |
| @Test |
| public void testPojoImplementation() { |
| final ProjectionDescriptor<Pojo, String> stringDescriptor = new ProjectionDescriptor<>(Pojo.class, String.class, "string"); |
| final Function<Pojo, String> stringImplementation = stringDescriptor.getJavaImplementation(); |
| |
| final ProjectionDescriptor<Pojo, Integer> integerDescriptor = new ProjectionDescriptor<>(Pojo.class, Integer.class, "integer"); |
| final Function<Pojo, Integer> integerImplementation = integerDescriptor.getJavaImplementation(); |
| |
| Assert.assertEquals( |
| "testValue", |
| stringImplementation.apply(new Pojo("testValue", 1)) |
| ); |
| Assert.assertEquals( |
| null, |
| stringImplementation.apply(new Pojo(null, 1)) |
| ); |
| Assert.assertEquals( |
| Integer.valueOf(1), |
| integerImplementation.apply(new Pojo("testValue", 1)) |
| ); |
| |
| } |
| |
| @Test |
| public void testRecordImplementation() { |
| RecordType inputType = new RecordType("a", "b", "c"); |
| final ProjectionDescriptor<Record, Record> descriptor = ProjectionDescriptor.createForRecords(inputType, "c", "a"); |
| Assert.assertEquals(new RecordType("c", "a"), descriptor.getOutputType()); |
| |
| final Function<Record, Record> javaImplementation = descriptor.getJavaImplementation(); |
| Assert.assertEquals( |
| new Record("world", 10), |
| javaImplementation.apply(new Record(10, "hello", "world")) |
| ); |
| } |
| |
| public static class Pojo { |
| |
| public String string; |
| |
| public int integer; |
| |
| public Pojo(String string, int integer) { |
| this.string = string; |
| this.integer = integer; |
| } |
| } |
| } |