/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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*
* 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 .
*
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*/
/* @test
@ bug 8030179
@ summary test if the charset encoder deails with surrogate correctly
* @ run testng / othervm - esa StreamEncoderOut
*/
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import java.util.stream.Stream;
import static java.util.stream.Collectors.joining;
@Test
public class StreamEncoderOut {
enum Input {
HIGH("\ud834" ),
LOW("\udd1e" ),
HIGH_LOW("\ud834\udd1e" );
final String value;
Input(String value) {
this .value = value;
}
@Override
public String toString() {
return name() + " : \'" + value + "\" ";
}
}
@DataProvider(name = "CharsetAndString" )
// [Charset, Input]
public static Object[][] makeStreamTestData() {
// Cross product of supported charsets and inputs
return Charset.availableCharsets().values().stream().
filter(Charset::canEncode).
flatMap(cs -> Stream.of(Input.values()).map(i -> new Object[]{cs, i})).
toArray(Object[][]::new );
}
private static String generate(String s, int n) {
return Stream.generate(() -> s).limit(n).collect(joining());
}
static final OutputStream DEV_NULL = new OutputStream() {
@Override
public void write(byte b[], int off, int len) throws IOException {}
@Override
public void write(int b) throws IOException {}
};
@Test(dataProvider = "CharsetAndString" )
public void test(Charset cs, Input input) throws IOException {
OutputStreamWriter w = new OutputStreamWriter(DEV_NULL, cs);
String t = generate(input.value, 8193 );
for (int i = 0 ; i < 10 ; i++) {
w.append(t);
}
}
}
Messung V0.5 in Prozent C=95 H=89 G=91
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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