1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package libcore.java.util.function; 18 19import junit.framework.TestCase; 20 21import java.util.function.DoubleConsumer; 22 23public class DoubleConsumerTest extends TestCase { 24 25 public void testAndThen() throws Exception { 26 StringBuilder sb = new StringBuilder(); 27 DoubleConsumer one = d -> sb.append("one:" + d + ","); 28 DoubleConsumer two = d -> sb.append("two:" + d); 29 30 one.andThen(two).accept(1.0d); 31 assertEquals("one:1.0,two:1.0", sb.toString()); 32 } 33 34 public void testAndThen_null() throws Exception { 35 DoubleConsumer one = s -> {}; 36 try { 37 one.andThen(null); 38 fail(); 39 } catch (NullPointerException expected) {} 40 } 41} 42