/*
* Copyright ( c ) 2020 , 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 .
*/
import java.io.CharArrayReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.PushbackReader;
import java.io.Reader;
import java.io.StringReader;
import org.testng.Assert ;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
/*
* @ test
* @ bug 8248383
* @ summary Ensure that zero is returned for read into zero length array
* @ run testng ReadIntoZeroLengthArray
*/
public class ReadIntoZeroLengthArray {
private File file;
private char [] cbuf0;
private char [] cbuf1;
@BeforeTest
public void setup() throws IOException {
file = File.createTempFile("foo" , "bar" , new File("." ));
cbuf0 = new char [0 ];
cbuf1 = new char [1 ];
}
@AfterTest
public void teardown() throws IOException {
file.delete ();
}
@DataProvider(name = "readers" )
public Object[][] getReaders() throws IOException {
Reader fileReader = new FileReader(file);
return new Object[][] {
{new LineNumberReader(fileReader)},
{new CharArrayReader(new char [] {27 })},
{new PushbackReader(fileReader)},
{fileReader},
{new StringReader(new String(new byte [] {(byte )42 }))}
};
}
@Test(dataProvider = "readers" )
void test0(Reader r) throws IOException {
Assert .assertEquals(r.read(cbuf0), 0 );
}
@Test(dataProvider = "readers" )
void test1(Reader r) throws IOException {
Assert .assertEquals(r.read(cbuf1, 0 , 0 ), 0 );
}
}
Messung V0.5 in Prozent C=98 H=82 G=90
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-29)
¤
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