Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 /*

  * @test

  * @bug 6838467

  * @summary JSR199 FileObjects don't obey general contract of equals.

  */

 import java.io.*;

 import java.util.*;

 import java.util.zip.*;

 import javax.tools.*;

 import com.sun.tools.javac.file.JavacFileManager;

 import com.sun.tools.javac.util.Context;

 public class T6838467 {

     boolean fileSystemIsCaseSignificant = !new File("a").equals(new File("A"));

     enum FileKind {

         DIR("dir"),

         ZIP("zip"),

         ZIPFILEINDEX("zip");

         FileKind(String path) {

             file = new File(path);

         }

         final File file;

     };

     enum CompareKind {

         SAME {

             File other(File f) { return f; }

         },

         ABSOLUTE {

             File other(File f) { return f.getAbsoluteFile(); }

         },

         DIFFERENT {

             File other(File f) { return new File("not_" + f.getPath()); }

         },

         CASEEQUIV {

             File other(File f) { return new File(f.getPath().toUpperCase()); }

         };

         abstract File other(File f);

     };

     String[] paths = { "p/A.java", "p/B.java", "p/C.java" };

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

         new T6838467().run();

     }

     void run() throws Exception {

         // on Windows, verify file system is not case significant

         if (System.getProperty("os.name").toLowerCase().startsWith("windows")

                 && fileSystemIsCaseSignificant) {

             error("fileSystemIsCaseSignificant is set on Windows.");

         }

         // create a set of directories and zip files to compare

         createTestDir(new File("dir"), paths);

         createTestDir(new File("not_dir"), paths);

         createTestZip(new File("zip"), paths);

         createTestZip(new File("not_zip"), paths);

         if (fileSystemIsCaseSignificant) {

             createTestDir(new File("DIR"), paths);

             createTestZip(new File("ZIP"), paths);

         }

         // test the various sorts of file objects that can be obtained from

         // the file manager, and for various values that may or may not match.

         for (FileKind fk: FileKind.values()) {

             for (CompareKind ck: CompareKind.values()) {

                 test(fk, ck);

             }

         }

         // verify that the various different types of file object were all

         // tested

         Set<String> expectClasses = new HashSet<String>(Arrays.asList(

                 "RegularFileObject", "ZipFileObject", "ZipFileIndexFileObject" ));

         if (!foundClasses.equals(expectClasses)) {

             error("expected fileobject classes not found\n"

                     + "expected: " + expectClasses + "\n"

                     + "found: " + foundClasses);

         }

         if (errors > 0)

             throw new Exception(errors + " errors");

     }

     void test(FileKind fk, CompareKind ck) throws IOException {

         File f1 = fk.file;

         JavaFileManager fm1 = createFileManager(fk, f1);

         File f2 = ck.other(fk.file);

         JavaFileManager fm2 = createFileManager(fk, f2);

         try {

             // If the directories or zip files match, we expect "n" matches in

             // the "n-squared" comparisons to come, where "n" is the number of

             // entries in the the directories or zip files.

             // If the directories or zip files don't themselves match,

             // we obviously don't expect any of their contents to match either.

             int expect = (f1.getAbsoluteFile().equals(f2.getAbsoluteFile()) ? paths.length : 0);

             System.err.println("test " + (++count) + " " + fk + " " + ck + " " + f1 + " " + f2);

             test(fm1, fm2, expect);

         } finally {

             fm1.close();

             fm2.close();

         }

     }

     // For a pair of file managers that may or may not have similar entries

     // on the classpath, compare all files returned from one against all files

     // returned from the other.  For each pair of files, verify that if they

     // are equal, the hashcode is equal as well, and finally verify that the

     // expected number of matches was found.

     void test(JavaFileManager fm1, JavaFileManager fm2, int expectEqualCount) throws IOException {

         boolean foundFiles1 = false;

         boolean foundFiles2 = false;

         int foundEqualCount = 0;

         Set<JavaFileObject.Kind> kinds =  EnumSet.allOf(JavaFileObject.Kind.class);

         for (FileObject fo1: fm1.list(StandardLocation.CLASS_PATH, "p", kinds, false)) {

             foundFiles1 = true;

             foundClasses.add(fo1.getClass().getSimpleName());

             for (FileObject fo2: fm2.list(StandardLocation.CLASS_PATH, "p", kinds, false)) {

                 foundFiles2 = true;

                 foundClasses.add(fo1.getClass().getSimpleName());

                 System.err.println("compare " + fo1 + " " + fo2);

                 if (fo1.equals(fo2)) {

                     foundEqualCount++;

                     int hash1 = fo1.hashCode();

                     int hash2 = fo2.hashCode();

                     if (hash1 != hash2)

                         error("hashCode error: " + fo1 + " [" + hash1 + "] "

                                 + fo2 + " [" + hash2 + "]");

                 }

             }

         }

         if (!foundFiles1)

             error("no files found for file manager 1");

         if (!foundFiles2)

             error("no files found for file manager 2");

         // verify the expected number of matches were found

         if (foundEqualCount != expectEqualCount)

             error("expected matches not found: expected " + expectEqualCount + ", found " + foundEqualCount);

     }

     // create a file manager to test a FileKind, with a given directory

     // or zip file placed on the classpath

     JavaFileManager createFileManager(FileKind fk, File classpath) throws IOException {

         StandardJavaFileManager fm = createFileManager(fk == FileKind.ZIP);

         fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(classpath));

         return fm;

     }

     JavacFileManager createFileManager(boolean useJavaUtilZip) {

         // javac should really not be using system properties like this

         // -- it should really be using (hidden) options -- but until then

         // take care to leave system properties as we find them, so as not

         // to adversely affect other tests that might follow.

         String prev = System.getProperty("useJavaUtilZip");

         boolean resetProperties = false;

         try {

             if (useJavaUtilZip) {

                 System.setProperty("useJavaUtilZip", "true");

                 resetProperties = true;

             } else if (System.getProperty("useJavaUtilZip") != null) {

                 System.getProperties().remove("useJavaUtilZip");

                 resetProperties = true;

             }

             Context c = new Context();

             return new JavacFileManager(c, false, null);

         } finally {

             if (resetProperties) {

                 if (prev == null) {

                     System.getProperties().remove("useJavaUtilZip");

                 } else {

                     System.setProperty("useJavaUtilZip", prev);

                 }

             }

         }

     }

     // create a directory containing a given set of paths

     void createTestDir(File dir, String[] paths) throws IOException {

         for (String p: paths) {

             File file = new File(dir, p);

             file.getParentFile().mkdirs();

             FileWriter out = new FileWriter(file);

             try {

                 out.write(p);

             } finally {

                 out.close();

             }

         }

     }

     // create a sip file containing a given set of entries

     void createTestZip(File zip, String[] paths) throws IOException {

         if (zip.getParentFile() != null)

             zip.getParentFile().mkdirs();

         ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zip));

         try {

             for (String p: paths) {

                 ZipEntry ze = new ZipEntry(p);

                 zos.putNextEntry(ze);

                 byte[] bytes = p.getBytes();

                 zos.write(bytes, 0, bytes.length);

                 zos.closeEntry();

             }

         } finally {

             zos.close();

         }

     }

     void error(String msg) {

         System.err.println("Error: " + msg);

         errors++;

     }

     int count;

     int errors;

     Set<String> foundClasses = new HashSet<String>();

 }