NoJavaLangTest.java revision 3792:d516975e8110 
1/*
2 * Copyright (c) 2013, 2016, 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 4263768 4785453
27 * @summary Verify that the compiler does not crash when java.lang is not available
28 * @library /tools/lib
29 * @modules jdk.compiler/com.sun.tools.javac.api
30 *          jdk.compiler/com.sun.tools.javac.main
31 * @build toolbox.ToolBox toolbox.JavacTask
32 * @run main NoJavaLangTest
33 */
34
35import java.nio.file.*;
36
37import toolbox.JavacTask;
38import toolbox.Task;
39import toolbox.ToolBox;
40
41public class NoJavaLangTest {
42
43    private static final String noJavaLangSrc =
44        "public class NoJavaLang {\n" +
45        "    private String s;\n" +
46        "\n" +
47        "    public String s() {\n" +
48        "        return s;\n" +
49        "    }\n" +
50        "}";
51
52    private static final String compilerErrorMessage =
53        "Fatal Error: Unable to find package java.lang in classpath or bootclasspath";
54
55    public static void main(String[] args) throws Exception {
56        new NoJavaLangTest().run();
57    }
58
59    final ToolBox tb = new ToolBox();
60
61    void run() throws Exception {
62        testStandard();
63        testBootClassPath();
64        testModulePath();
65    }
66
67    // sanity check, with java.lang available
68    void testStandard() {
69        new JavacTask(tb)
70                .sources(noJavaLangSrc)
71                .run();
72    }
73
74
75    // test with bootclasspath, for as long as its around
76    void testBootClassPath() {
77        String[] bcpOpts = { "-Xlint:-options", "-source", "8", "-bootclasspath", "." };
78        test(bcpOpts, compilerErrorMessage);
79    }
80
81    // test with module path
82    void testModulePath() throws Exception {
83        // need to ensure there is an empty java.base to avoid different error message
84        Files.createDirectories(Paths.get("modules/java.base"));
85        new JavacTask(tb)
86                .sources("module java.base { }",
87                         "package java.lang; public class Object {}")
88                .outdir("modules/java.base")
89                .run();
90
91        Files.delete(Paths.get("modules", "java.base", "java", "lang", "Object.class"));
92
93        // ideally we'd have a better message for this case
94        String[] mpOpts = { "--system", "none", "--module-path", "modules" };
95        test(mpOpts, compilerErrorMessage);
96    }
97
98    private void test(String[] options, String expect) {
99        System.err.println("Testing " + java.util.Arrays.toString(options));
100
101        String out = new JavacTask(tb)
102                .options(options)
103                .sources(noJavaLangSrc)
104                .run(Task.Expect.FAIL, 3)
105                .writeAll()
106                .getOutput(Task.OutputKind.DIRECT);
107
108        if (!out.trim().equals(expect)) {
109            throw new AssertionError("javac generated error output is not correct");
110        }
111
112        System.err.println("OK");
113    }
114
115}
116