1 /*
2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 package test.java.io.PrintStream;
24 
25 import java.io.File;
26 import java.io.FileOutputStream;
27 import java.io.IOException;
28 import java.io.PrintStream;
29 import java.nio.charset.Charset;
30 import java.nio.charset.StandardCharsets;
31 import java.nio.file.Files;
32 import java.nio.file.Paths;
33 import org.testng.Assert;
34 import org.testng.annotations.DataProvider;
35 import org.testng.annotations.Test;
36 
37 /**
38  * @test
39  * @bug 8183743
40  * @summary Test to verify the new overload method with Charset functions the same
41  * as the existing method that takes a charset name.
42  * @run testng EncodingTest
43  */
44 public class EncodingTest {
45     static boolean AUTOFLUSH = true;
46     public static enum ConstructorType {
47         STRING,
48         FILE,
49         OUTPUTSTREAM
50     }
51 
52     /*
53      * DataProvider fields:
54      * Type of the constructor, a file to be written with a charset name,
55      * a file to be written with a charset, charset name, charset.
56      */
57     @DataProvider(name = "parameters")
getParameters()58     public Object[][] getParameters() throws IOException {
59         String csn = StandardCharsets.UTF_8.name();
60         Charset charset = StandardCharsets.UTF_8;
61         File file1 = File.createTempFile("PSCharsetTest1", "txt");
62         File file2 = File.createTempFile("PSCharsetTest2", "txt");
63 
64         return new Object[][]{
65                 {ConstructorType.STRING, file1, file2, csn, charset},
66                 {ConstructorType.FILE, file1, file2, csn, charset},
67                 {ConstructorType.OUTPUTSTREAM, file1, file2, csn, charset}
68         };
69     }
70 
71     /**
72      * Verifies that the overloading constructor behaves the same as the existing
73      * one.
74      * @param type the type of the constructor
75      * @param file1 file1 written with the name of a charset
76      * @param file2 file2 written with a charset
77      * @param csn the charset name
78      * @param charset the charset
79      * @throws IOException
80      */
81     @Test(dataProvider = "parameters")
test(ConstructorType type, File file1, File file2, String csn, Charset charset)82     public void test(ConstructorType type, File file1, File file2, String csn, Charset charset)
83             throws Exception {
84         createFile(getPrintStream(type, file1.getPath(), csn, null));
85         createFile(getPrintStream(type, file2.getPath(), null, charset));
86 
87         Assert.assertEquals(Files.readAllLines(Paths.get(file1.getPath()), charset),
88                 Files.readAllLines(Paths.get(file2.getPath()), charset));
89     }
90 
createFile(PrintStream out)91     public void createFile(PrintStream out) throws IOException {
92         out.println("high surrogate");
93         out.println(Character.MIN_HIGH_SURROGATE);
94         out.println("low surrogate");
95         out.println(Character.MIN_LOW_SURROGATE);
96         out.flush();
97         out.close();
98     }
99 
getPrintStream(ConstructorType type, String path, String csn, Charset charset)100     PrintStream getPrintStream(ConstructorType type, String path, String csn, Charset charset)
101             throws IOException {
102         PrintStream out = null;
103         if (csn != null) {
104             switch (type) {
105                 case STRING:
106                     out = new PrintStream(path, csn);
107                     break;
108                 case FILE:
109                     out = new PrintStream(new File(path), csn);
110                     break;
111                 case OUTPUTSTREAM:
112                     FileOutputStream fout = new FileOutputStream(path);
113                     out = new PrintStream(fout, AUTOFLUSH, csn);
114                     break;
115             }
116         } else {
117             switch (type) {
118                 case STRING:
119                     out = new PrintStream(path, charset);
120                     break;
121                 case FILE:
122                     out = new PrintStream(new File(path), charset);
123                     break;
124                 case OUTPUTSTREAM:
125                     FileOutputStream fout = new FileOutputStream(path);
126                     out = new PrintStream(fout, AUTOFLUSH, charset);
127                     break;
128             }
129         }
130 
131         return out;
132     }
133 
134 }