AnonymousSubclassTest.java revision 3294:9adfb22ff08f 
1/*
2 * Copyright (c) 2014, 2015, 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 * @bug 8023945
27 * @summary javac wrongly allows a subclass of an anonymous class
28 * @library /tools/lib
29 * @modules jdk.compiler/com.sun.tools.javac.api
30 *          jdk.compiler/com.sun.tools.javac.file
31 *          jdk.compiler/com.sun.tools.javac.main
32 *          jdk.jdeps/com.sun.tools.javap
33 * @build ToolBox
34 * @run main AnonymousSubclassTest
35 */
36
37public class AnonymousSubclassTest {
38    public static void main(String... args) throws Exception {
39        new AnonymousSubclassTest().run();
40    }
41
42    ToolBox tb = new ToolBox();
43
44    // To trigger the error we want, first we need to compile
45    // a class with an anonymous inner class: Foo$1.
46    final String foo =
47        "public class Foo {" +
48        "  void m() { Foo f = new Foo() {}; }" +
49        "}";
50
51    // Then, we try to subclass the anonymous class
52    // Note: we must do this in two classes because a different
53    // error will be generated if we don't load Foo$1 through the
54    // class reader.
55    final String test1 =
56        "public class Test1 {" +
57        "  void m() {"+
58        "    Foo f1 = new Foo();"+
59        "    Foo f2 = new Foo$1(f1) {};"+
60        "  }" +
61        "}";
62
63    final String test2 =
64        "public class Test2 {" +
65        "  class T extends Foo$1 {" +
66        "    public T(Foo f) { super(f); }" +
67        "  }"+
68        "}";
69
70    void compOk(String code) throws Exception {
71        tb.new JavacTask()
72                .sources(code)
73                .run();
74    }
75
76    void compFail(String code) throws Exception {
77        String errs = tb.new JavacTask()
78                .sources(code)
79                .classpath(".")
80                .options("-XDrawDiagnostics")
81                .run(ToolBox.Expect.FAIL)
82                .writeAll()
83                .getOutput(ToolBox.OutputKind.DIRECT);
84
85        if (!errs.contains("cant.inherit.from.anon")) {
86            throw new Exception("test failed");
87        }
88    }
89
90    void run() throws Exception {
91        compOk(foo);
92        compFail(test1);
93        compFail(test2);
94    }
95}
96