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/*
* Copyright (c) 1998, 2021, 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 4134311 8247918
* @summary Test if skip works correctly
* @run testng Skip
*/
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.RandomAccessFile;
import java.io.Reader;
import java.io.StringReader;
import org.testng.Assert;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
public class Skip {
private static String FILENAME =
System.getProperty("test.src", ".") + File.separator + "SkipInput.txt";
private static File file = new File(FILENAME);
@Test
public void skip() throws IOException {
try (FileReader fr = new FileReader(file)) {
long nchars = 8200;
long actual = fr.skip(nchars);
Assert.assertFalse(actual > nchars,
"Should skip " + nchars + ", but skipped " +actual+" chars");
}
}
@DataProvider(name = "readers")
public Object[][] getReaders() throws IOException {
return new Object[][] {
{new LineNumberReader(new FileReader(file))},
{new CharArrayReader(new char[] {27})},
{new PushbackReader(new FileReader(file))},
{new FileReader(file)},
{new StringReader(new String(new byte[] {(byte)42}))}
};
}
@Test(dataProvider = "readers")
public void eof(Reader r) throws IOException {
r.skip(Long.MAX_VALUE);
Assert.assertEquals(r.skip(1), 0);
Assert.assertEquals(r.read(), -1);
}
@DataProvider(name = "skipIAE")
public Object[][] getSkipIAEs() throws IOException {
return new Object[][] {
{new LineNumberReader(new FileReader(file))},
{new PushbackReader(new FileReader(file))},
{new FileReader(file)}
};
}
@Test(dataProvider = "skipIAE", expectedExceptions = IllegalArgumentException.class)
public void testThrowsIAE(Reader r) throws IOException {
r.skip(-1);
}
@DataProvider(name = "skipNoIAE")
public Object[][] getSkipNoIAEs() throws IOException {
return new Object[][] {
{new CharArrayReader(new char[] {27})},
{new StringReader(new String(new byte[] {(byte)42}))}
};
}
@Test(dataProvider = "skipNoIAE")
public void testNoIAE(Reader r) throws IOException {
r.skip(-1);
}
}
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