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/*
* Copyright (C) 2007 The Guava Authors
*
* Licensed 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 com.google.common.base;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import java.nio.charset.Charset;
import java.util.Arrays;
import junit.framework.TestCase;
/**
* Unit test for {@link Charsets}.
*
* @author Mike Bostock
*/
@GwtCompatible(emulated = true)
public class CharsetsTest extends TestCase {
@GwtIncompatible // Non-UTF-8 Charset
public void testUsAscii() {
assertEquals(Charset.forName("US-ASCII"), Charsets.US_ASCII);
}
@GwtIncompatible // Non-UTF-8 Charset
public void testIso88591() {
assertEquals(Charset.forName("ISO-8859-1"), Charsets.ISO_8859_1);
}
public void testUtf8() {
assertEquals(Charset.forName("UTF-8"), Charsets.UTF_8);
}
@GwtIncompatible // Non-UTF-8 Charset
public void testUtf16be() {
assertEquals(Charset.forName("UTF-16BE"), Charsets.UTF_16BE);
}
@GwtIncompatible // Non-UTF-8 Charset
public void testUtf16le() {
assertEquals(Charset.forName("UTF-16LE"), Charsets.UTF_16LE);
}
@GwtIncompatible // Non-UTF-8 Charset
public void testUtf16() {
assertEquals(Charset.forName("UTF-16"), Charsets.UTF_16);
}
@GwtIncompatible // Non-UTF-8 Charset
public void testWhyUsAsciiIsDangerous() {
byte[] b1 = "朝日新聞".getBytes(Charsets.US_ASCII);
byte[] b2 = "聞朝日新".getBytes(Charsets.US_ASCII);
byte[] b3 = "????".getBytes(Charsets.US_ASCII);
byte[] b4 = "ニュース".getBytes(Charsets.US_ASCII);
byte[] b5 = "スューー".getBytes(Charsets.US_ASCII);
// Assert they are all equal (using the transitive property)
assertTrue(Arrays.equals(b1, b2));
assertTrue(Arrays.equals(b2, b3));
assertTrue(Arrays.equals(b3, b4));
assertTrue(Arrays.equals(b4, b5));
}
}
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