/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4884238
* @summary Test standard charset name constants.
* @author Mike Duigou
* @run main Standard
*/
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.io.*;
import java.nio.charset.*;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
public class Standard {
private final static String standardCharsets[] = {
"US-ASCII", "ISO-8859-1", "UTF-8",
"UTF-16BE", "UTF-16LE", "UTF-16" };
public static void realMain(String[] args) {
check(StandardCharsets.US_ASCII instanceof Charset);
check(StandardCharsets.ISO_8859_1 instanceof Charset);
check(StandardCharsets.UTF_8 instanceof Charset);
check(StandardCharsets.UTF_16BE instanceof Charset);
check(StandardCharsets.UTF_16LE instanceof Charset);
check(StandardCharsets.UTF_16 instanceof Charset);
check("US-ASCII".equals(StandardCharsets.US_ASCII.name()));
check("ISO-8859-1".equals(StandardCharsets.ISO_8859_1.name()));
check("UTF-8".equals(StandardCharsets.UTF_8.name()));
check("UTF-16BE".equals(StandardCharsets.UTF_16BE.name()));
check("UTF-16LE".equals(StandardCharsets.UTF_16LE.name()));
check("UTF-16".equals(StandardCharsets.UTF_16.name()));
Set<String> charsets = new HashSet<>();
Field standardCharsetFields[] = StandardCharsets.class.getFields();
for(Field charsetField : standardCharsetFields) {
check(StandardCharsets.class == charsetField.getDeclaringClass());
check(Modifier.isFinal(charsetField.getModifiers()));
check(Modifier.isStatic(charsetField.getModifiers()));
check(Modifier.isPublic(charsetField.getModifiers()));
Object value;
try {
value = charsetField.get(null);
} catch(IllegalAccessException failure) {
unexpected(failure);
continue;
}
check(value instanceof Charset);
charsets.add(((Charset)value).name());
}
check(charsets.containsAll(Arrays.asList(standardCharsets)));
charsets.removeAll(Arrays.asList(standardCharsets));
check(charsets.isEmpty());
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0, failed = 0;
static void pass() { passed++; }
static void fail() { failed++; Thread.dumpStack(); }
static void fail(String msg) { System.out.println(msg); fail(); }
static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
static void check(boolean cond) { if (cond) pass(); else fail(); }
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else {System.out.println(x + " not equal to " + y); fail();}}
static void equal2(Object x, Object y) {equal(x, y); equal(y, x);}
public static void main(String[] args) throws Throwable {
try { realMain(args); } catch (Throwable t) { unexpected(t); }
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new Exception("Some tests failed");
}
private static abstract class Fun {abstract void f() throws Throwable;}
private static void THROWS(Class<? extends Throwable> k, Fun... fs) {
for (Fun f : fs)
try { f.f(); fail("Expected " + k.getName() + " not thrown"); }
catch (Throwable t) {
if (k.isAssignableFrom(t.getClass())) pass();
else unexpected(t);}}
static byte[] serializedForm(Object obj) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new ObjectOutputStream(baos).writeObject(obj);
return baos.toByteArray();
} catch (IOException e) { throw new Error(e); }}
static Object readObject(byte[] bytes)
throws IOException, ClassNotFoundException {
InputStream is = new ByteArrayInputStream(bytes);
return new ObjectInputStream(is).readObject();}
@SuppressWarnings("unchecked")
static <T> T serialClone(T obj) {
try { return (T) readObject(serializedForm(obj)); }
catch (Exception e) { throw new Error(e); }}
}