/*
* 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.tomcat.util.buf;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import org.junit.Assert;
import org.junit.Test;
public class TestCharsetCache {
@Test
public void testAllKnownCharsets() {
Set<String> known = new HashSet<>(Arrays.asList(CharsetCache.LAZY_CHARSETS));
Set<String> initial = new HashSet<>(Arrays.asList(CharsetCache.INITIAL_CHARSETS));
List<String> cacheMisses = new ArrayList<>();
for (Charset charset: Charset.availableCharsets().values()) {
String name = charset.name().toLowerCase(Locale.ENGLISH);
// No need to test the charsets that are pre-loaded
if (initial.contains(name)) {
continue;
}
if (!known.contains(name)) {
cacheMisses.add(name);
}
for (String alias : charset.aliases()) {
alias = alias.toLowerCase(Locale.ENGLISH);
if (!known.contains(alias)) {
cacheMisses.add(alias);
}
}
}
if (cacheMisses.size() != 0) {
StringBuilder sb = new StringBuilder();
Collections.sort(cacheMisses);
for (String name : cacheMisses) {
if (sb.length() == 0) {
sb.append('"');
} else {
sb.append(", \"");
}
sb.append(name.toLowerCase(Locale.ENGLISH));
sb.append('"');
}
System.out.println(sb.toString());
}
Assert.assertTrue(cacheMisses.size() == 0);
}
}