1 /*
2 * Copyright (c) 2020, 2021, 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
21 * questions.
22 */
23
24 /*
25 * @test
26 * @summary test the records can be read by javac properly
27 * @library /tools/lib
28 * @modules jdk.compiler/com.sun.tools.javac.api
29 * jdk.compiler/com.sun.tools.javac.main
30 * @build toolbox.ToolBox toolbox.JavacTask
31 * @run main RecordReading
32 */
33
34 import java.io.IOException;
35 import java.nio.file.Files;
36 import java.nio.file.Path;
37 import java.nio.file.Paths;
38 import java.util.Objects;
39 import toolbox.TestRunner;
40 import toolbox.ToolBox;
41 import toolbox.JavacTask;
42 import toolbox.Task;
43
44 public class RecordReading extends TestRunner {
45 ToolBox tb;
46
47 RecordReading() {
48 super(System.err);
49 tb = new ToolBox();
50 }
51
52 protected void runTests() throws Exception {
53 runTests(m -> new Object[]{Paths.get(m.getName())});
54 }
55
56 public static void main(String... args) throws Exception {
57 RecordReading t = new RecordReading();
58 t.runTests();
59 }
60
61 Path[] findJavaFiles(Path... paths) throws IOException {
62 return tb.findJavaFiles(paths);
63 }
64
65 @Test
66 public void testRecordClassFileReading(Path base) throws Exception {
67 Path src = base.resolve("src");
68
69 tb.writeJavaFiles(src,
70 """
71 public record R(int i, @A long j, java.util.List<String> l) {}
72 """,
73 """
74 public @interface A {}
75 """);
76
77 Path out = base.resolve("out");
78 Files.createDirectories(out);
79
80 new JavacTask(tb)
81 .outdir(out)
82 .files(findJavaFiles(src))
83 .run();
84
85 //read the class file back, to verify javac's ClassReader
86 //reads the Record attribute properly:
87 String output = new JavacTask(tb)
88 .options("-Xprint")
89 .classpath(out.toString())
90 .classes("R")
91 .run()
92 .writeAll()
93 .getOutput(Task.OutputKind.STDOUT)
94 .replaceAll("\\R", "\n");
95
96 String expected =
97 """
98 \n\
99 public record R(int i, @A long j, java.util.List<java.lang.String> l) {
100 private final int i;
101 @A
102 private final long j;
103 private final java.util.List<java.lang.String> l;
104 \n\
105 public R(int i,
106 @A long j,
107 java.util.List<java.lang.String> l);
108 \n\
109 public final java.lang.String toString();
110 \n\
111 public final int hashCode();
112 \n\
113 public final boolean equals(java.lang.Object arg0);
114 \n\
115 public int i();
116 \n\
117 @A
118 public long j();
119 \n\
120 public java.util.List<java.lang.String> l();
121 }
122 """;
123 if (!Objects.equals(expected, output)) {
124 throw new AssertionError("Unexpected output: " + output);
125 }
126 }
127
128 }