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/*
* Copyright (c) 2025, 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 8354724
* @summary Test Reader readAllLines and readAllAstring methods
* @library .. /test/lib
* @build jdk.test.lib.Platform jdk.test.lib.RandomFactory
* @run junit ReadAll
* @key randomness
*/
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import jdk.test.lib.RandomFactory;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class ReadAll {
private static final String PHRASE =
"Ange plein de gaieté, connaissez-vous l'angoisse";
private static File file;
private static Path path;
private static Random rnd;
@BeforeAll
public static void setup() throws IOException {
path = Files.createTempFile(Path.of("."), "foo", "bar");
file = path.toFile();
rnd = RandomFactory.getRandom();
int size = rnd.nextInt(2, 16386);
int plen = PHRASE.length();
List<String> strings = new ArrayList<String>(size);
while (strings.size() < size) {
int fromIndex = rnd.nextInt(0, plen / 2);
int toIndex = rnd.nextInt(fromIndex, plen);
strings.add(PHRASE.substring(fromIndex, toIndex));
}
Files.write(path, strings);
System.out.println(strings.size() + " lines written");
}
@AfterAll
public static void cleanup() throws IOException {
if (file != null)
file.delete();
}
@Test
public void readAllLines() throws IOException {
// Reader implementation
List<String> lines;
try (FileReader fr = new FileReader(file)) {
lines = fr.readAllLines();
}
System.out.println(lines.size() + " lines read");
List<String> linesExpected = Files.readAllLines(path);
assertEquals(linesExpected, lines);
// Reader.of implementation
String stringExpected = Files.readString(path);
int n = rnd.nextInt(stringExpected.length()/2);
String substringExpected = stringExpected.substring(n);
linesExpected = substringExpected.lines().toList();
try (Reader r = new StringReader(stringExpected)) {
r.skip(n);
lines = r.readAllLines();
}
assertEquals(linesExpected, lines);
}
@Test
public void readAllAsString() throws IOException {
// Reader implementation
String string;
try (FileReader fr = new FileReader(file)) {
string = fr.readAllAsString();
}
String stringExpected = Files.readString(path);
assertEquals(stringExpected, string);
// Reader.of implementation
int n = rnd.nextInt(stringExpected.length()/2);
try (Reader r = Reader.of(stringExpected)) {
r.skip(n);
string = r.readAllAsString();
}
assertEquals(stringExpected.substring(n), string);
}
}
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