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/*
* Copyright (c) 2017, 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.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Paths;
import java.util.Scanner;
import org.testng.Assert;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
/**
* @test
* @bug 8183743
* @summary Test to verify the new overload method with Charset functions the
* same as the existing method that takes a charset name.
* @run testng EncodingTest
*/
public class EncodingTest {
static String USER_DIR = System.getProperty("user.dir", ".");
public static enum ConstructorType {
FILE,
PATH,
INPUTSTREAM,
READABLEBYTECHANNEL
}
static final String TEST_STRING = "abc \u0100 \u0101 \u0555 \u07FD \u07FF";
@DataProvider(name = "parameters")
public Object[][] getParameters() throws IOException {
String csn = StandardCharsets.UTF_8.name();
Charset charset = StandardCharsets.UTF_8;
File file1 = new File(USER_DIR, "ScannerCharsetTest1.txt");
File file2 = new File(USER_DIR, "ScannerCharsetTest2.txt");
return new Object[][]{
{ConstructorType.FILE, file1, file2, csn, charset},
{ConstructorType.PATH, file1, file2, csn, charset},
{ConstructorType.INPUTSTREAM, file1, file2, csn, charset},
{ConstructorType.READABLEBYTECHANNEL, file1, file2, csn, charset},};
}
/**
* Verifies that the overloading constructor behaves the same as the
* existing one.
*
* @param type the type of the constructor
* @param file1 file1 written with the name of a charset
* @param file2 file2 written with a charset
* @param csn the charset name
* @param charset the charset
* @throws IOException
*/
@Test(dataProvider = "parameters")
void test(ConstructorType type, File file1, File file2, String csn, Charset charset)
throws Exception {
prepareFile(file1, TEST_STRING);
prepareFile(file2, TEST_STRING);
try (Scanner s1 = getScanner(type, file1.getPath(), csn, null);
Scanner s2 = getScanner(type, file2.getPath(), null, charset);) {
String result1 = s1.findInLine(TEST_STRING);
String result2 = s2.findInLine(TEST_STRING);
Assert.assertEquals(result1, result2);
}
}
/*
* Creates a Scanner over the given input file.
*/
Scanner getScanner(ConstructorType type, String file, String csn, Charset charset)
throws Exception {
if (csn != null) {
switch (type) {
case FILE:
return new Scanner(new File(file), csn);
case PATH:
return new Scanner(Paths.get(file), csn);
case INPUTSTREAM:
FileInputStream fis = new FileInputStream(file);
return new Scanner(fis, csn);
case READABLEBYTECHANNEL:
FileInputStream fis1 = new FileInputStream(file);
return new Scanner(fis1.getChannel(), csn);
}
} else {
switch (type) {
case FILE:
return new Scanner(new File(file), charset);
case PATH:
return new Scanner(Paths.get(file), charset);
case INPUTSTREAM:
FileInputStream fis = new FileInputStream(file);
return new Scanner(fis, charset);
case READABLEBYTECHANNEL:
FileInputStream fis1 = new FileInputStream(file);
return new Scanner(fis1.getChannel(), charset);
}
}
return null;
}
void prepareFile(File file, String content) throws IOException {
try (FileWriter writer = new FileWriter(file);) {
writer.write(content);
}
}
}
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