1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.io.output; 18 19 import java.io.IOException; 20 21 import org.junit.jupiter.api.Test; 22 23 /** 24 * Tests {@link NullOutputStream}. 25 */ 26 public class NullOutputStreamTest { 27 28 private void process(final NullOutputStream nos) throws IOException { 29 nos.write("string".getBytes()); 30 nos.write("some string".getBytes(), 3, 5); 31 nos.write(1); 32 nos.write(0x0f); 33 nos.flush(); 34 nos.close(); 35 nos.write("allowed".getBytes()); 36 nos.write(255); 37 } 38 39 @Test 40 public void testNewInstance() throws IOException { 41 try (NullOutputStream nos = NullOutputStream.INSTANCE) { 42 process(nos); 43 } 44 } 45 46 @Test 47 public void testSingleton() throws IOException { 48 try (NullOutputStream nos = NullOutputStream.INSTANCE) { 49 process(nos); 50 } 51 } 52 53 }