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 18 package org.apache.commons.io; 19 20 import static org.junit.jupiter.api.Assertions.assertEquals; 21 22 import java.nio.charset.Charset; 23 import java.nio.charset.StandardCharsets; 24 import java.util.Set; 25 import java.util.SortedMap; 26 27 import org.junit.jupiter.api.Test; 28 29 /** 30 * Tests {@link Charsets}. 31 */ 32 @SuppressWarnings("deprecation") // testing deprecated code 33 public class CharsetsTest { 34 35 /** 36 * For parameterized tests. 37 */ 38 public static final String AVAIL_CHARSETS = "org.apache.commons.io.CharsetsTest#availableCharsetsKeySet"; 39 40 /** 41 * For parameterized tests. 42 * 43 * @return {@code Charset.availableCharsets().keySet()}. 44 */ availableCharsetsKeySet()45 public static Set<String> availableCharsetsKeySet() { 46 return Charset.availableCharsets().keySet(); 47 } 48 49 @Test testIso8859_1()50 public void testIso8859_1() { 51 assertEquals("ISO-8859-1", Charsets.ISO_8859_1.name()); 52 } 53 54 @Test testRequiredCharsets()55 public void testRequiredCharsets() { 56 final SortedMap<String, Charset> requiredCharsets = Charsets.requiredCharsets(); 57 // test for what we expect to be there as of Java 6 58 // Make sure the object at the given key is the right one 59 assertEquals(requiredCharsets.get("US-ASCII").name(), "US-ASCII"); 60 assertEquals(requiredCharsets.get("ISO-8859-1").name(), "ISO-8859-1"); 61 assertEquals(requiredCharsets.get("UTF-8").name(), "UTF-8"); 62 assertEquals(requiredCharsets.get("UTF-16").name(), "UTF-16"); 63 assertEquals(requiredCharsets.get("UTF-16BE").name(), "UTF-16BE"); 64 assertEquals(requiredCharsets.get("UTF-16LE").name(), "UTF-16LE"); 65 } 66 67 @Test testToCharset_String()68 public void testToCharset_String() { 69 assertEquals(Charset.defaultCharset(), Charsets.toCharset((String) null)); 70 assertEquals(Charset.defaultCharset(), Charsets.toCharset((Charset) null)); 71 assertEquals(Charset.defaultCharset(), Charsets.toCharset(Charset.defaultCharset())); 72 assertEquals(StandardCharsets.UTF_8, Charsets.toCharset(StandardCharsets.UTF_8)); 73 } 74 75 @Test testToCharset_String_Charset()76 public void testToCharset_String_Charset() { 77 assertEquals(null, Charsets.toCharset((String) null, null)); 78 assertEquals(Charset.defaultCharset(), Charsets.toCharset((String) null, Charset.defaultCharset())); 79 assertEquals(Charset.defaultCharset(), Charsets.toCharset((Charset) null, Charset.defaultCharset())); 80 assertEquals(null, Charsets.toCharset((Charset) null, null)); 81 assertEquals(Charset.defaultCharset(), Charsets.toCharset(Charset.defaultCharset(), Charset.defaultCharset())); 82 assertEquals(StandardCharsets.UTF_8, Charsets.toCharset(StandardCharsets.UTF_8, Charset.defaultCharset())); 83 assertEquals(StandardCharsets.UTF_8, Charsets.toCharset(StandardCharsets.UTF_8, null)); 84 } 85 86 @Test testUsAscii()87 public void testUsAscii() { 88 assertEquals("US-ASCII", Charsets.US_ASCII.name()); 89 } 90 91 @Test testUtf16()92 public void testUtf16() { 93 assertEquals("UTF-16", Charsets.UTF_16.name()); 94 } 95 96 @Test testUtf16Be()97 public void testUtf16Be() { 98 assertEquals("UTF-16BE", Charsets.UTF_16BE.name()); 99 } 100 101 @Test testUtf16Le()102 public void testUtf16Le() { 103 assertEquals("UTF-16LE", Charsets.UTF_16LE.name()); 104 } 105 106 @Test testUtf8()107 public void testUtf8() { 108 assertEquals("UTF-8", Charsets.UTF_8.name()); 109 } 110 111 } 112