jdk8-mips64-public/langtools: test/tools/javac/6863465/TestCircularClassfile.java@ce6175cfe11e

6968793: issues with diagnostics
Summary: several diagnostic improvements
Reviewed-by: jjg

     1 /*

     2  * Copyright (c) 2010, 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  */

    24 /*

    25  * @test

    26  * @bug 6863465

    27  * @summary  javac doesn't detect circular subclass dependencies via qualified names

    28  * @run main TestCircularClassfile

    29  */

    31 import java.io.*;

    32 import java.net.URI;

    33 import java.util.Arrays;

    34 import javax.tools.Diagnostic;

    35 import javax.tools.DiagnosticListener;

    36 import javax.tools.JavaCompiler;

    37 import javax.tools.JavaFileObject;

    38 import javax.tools.SimpleJavaFileObject;

    39 import javax.tools.ToolProvider;

    41 import com.sun.source.util.JavacTask;

    42 import java.util.EnumSet;

    44 public class TestCircularClassfile {

    46     enum ClassName {

    47         A("A"),

    48         B("B"),

    49         C("C"),

    50         OBJECT("Object");

    52         String name;

    54         ClassName(String name) {

    55             this.name = name;

    56         }

    57     }

    59     static class JavaSource extends SimpleJavaFileObject {

    61         final static String sourceStub = "class #C extends #S {}";

    63         String source;

    65         public JavaSource(ClassName clazz, ClassName sup) {

    66             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

    67             source = sourceStub.replace("#C", clazz.name).replace("#S", sup.name);

    68         }

    70         @Override

    71         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

    72             return source;

    73         }

    74     }

    76     public static void main(String... args) throws Exception {

    77         int count = 0;

    78         for (ClassName clazz : EnumSet.of(ClassName.A, ClassName.B, ClassName.C)) {

    79             for (ClassName sup : EnumSet.of(ClassName.A, ClassName.B, ClassName.C)) {

    80                 if (sup.ordinal() < clazz.ordinal()) continue;

    81                 check("sub_"+count++, clazz, sup);

    82             }

    83         }

    84     }

    86     static JavaSource[] initialSources = new JavaSource[] {

    87             new JavaSource(ClassName.A, ClassName.OBJECT),

    88             new JavaSource(ClassName.B, ClassName.A),

    89             new JavaSource(ClassName.C, ClassName.B)

    90         };

    92     static String workDir = System.getProperty("user.dir");

    94     static void check(String destPath, ClassName clazz, ClassName sup) throws Exception {

    95         File destDir = new File(workDir, destPath); destDir.mkdir();

    96         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();

    97         JavacTask ct = (JavacTask)tool.getTask(null, null, null,

    98                 Arrays.asList("-d", destPath), null, Arrays.asList(initialSources));

    99         ct.generate();

   100         File fileToRemove = new File(destPath, clazz.name + ".class");

   101         fileToRemove.delete();

   102         JavaSource newSource = new JavaSource(clazz, sup);

   103         DiagnosticChecker checker = new DiagnosticChecker();

   104         ct = (JavacTask)tool.getTask(null, null, checker,

   105                 Arrays.asList("-cp", destPath), null, Arrays.asList(newSource));

   106         ct.analyze();

   107         if (!checker.errorFound) {

   108             throw new AssertionError(newSource.source);

   109         }

   110     }

   112     static class DiagnosticChecker implements DiagnosticListener<JavaFileObject> {

   114         boolean errorFound = false;

   116         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {

   117             if (diagnostic.getKind() == Diagnostic.Kind.ERROR &&

   118                     diagnostic.getCode().equals("compiler.err.cyclic.inheritance")) {

   119                 errorFound = true;

   120             }

   121         }

   122     }

   123 }

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