250 lines
9.3 KiB
Java
250 lines
9.3 KiB
Java
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/*
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* Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 6838467
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* @summary JSR199 FileObjects don't obey general contract of equals.
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*/
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import java.io.*;
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import java.util.*;
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import java.util.zip.*;
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import javax.tools.*;
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import com.sun.tools.javac.file.JavacFileManager;
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import com.sun.tools.javac.util.Context;
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public class T6838467 {
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boolean fileSystemIsCaseSignificant = !new File("a").equals(new File("A"));
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enum FileKind {
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DIR("dir"),
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ZIP("zip"),
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ZIPFILEINDEX("zip");
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FileKind(String path) {
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file = new File(path);
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}
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final File file;
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};
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enum CompareKind {
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SAME {
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File other(File f) { return f; }
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},
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ABSOLUTE {
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File other(File f) { return f.getAbsoluteFile(); }
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},
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DIFFERENT {
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File other(File f) { return new File("not_" + f.getPath()); }
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},
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CASEEQUIV {
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File other(File f) { return new File(f.getPath().toUpperCase()); }
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};
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abstract File other(File f);
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};
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String[] paths = { "p/A.java", "p/B.java", "p/C.java" };
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public static void main(String... args) throws Exception {
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new T6838467().run();
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}
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void run() throws Exception {
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// on Windows, verify file system is not case significant
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if (System.getProperty("os.name").toLowerCase().startsWith("windows")
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&& fileSystemIsCaseSignificant) {
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error("fileSystemIsCaseSignificant is set on Windows.");
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}
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// create a set of directories and zip files to compare
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createTestDir(new File("dir"), paths);
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createTestDir(new File("not_dir"), paths);
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createTestZip(new File("zip"), paths);
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createTestZip(new File("not_zip"), paths);
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if (fileSystemIsCaseSignificant) {
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createTestDir(new File("DIR"), paths);
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createTestZip(new File("ZIP"), paths);
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}
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// test the various sorts of file objects that can be obtained from
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// the file manager, and for various values that may or may not match.
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for (FileKind fk: FileKind.values()) {
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for (CompareKind ck: CompareKind.values()) {
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test(fk, ck);
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}
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}
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// verify that the various different types of file object were all
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// tested
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Set<String> expectClasses = new HashSet<String>(Arrays.asList(
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"RegularFileObject", "ZipFileObject", "ZipFileIndexFileObject" ));
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if (!foundClasses.equals(expectClasses)) {
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error("expected fileobject classes not found\n"
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+ "expected: " + expectClasses + "\n"
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+ "found: " + foundClasses);
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}
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if (errors > 0)
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throw new Exception(errors + " errors");
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}
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void test(FileKind fk, CompareKind ck) throws IOException {
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File f1 = fk.file;
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JavaFileManager fm1 = createFileManager(fk, f1);
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File f2 = ck.other(fk.file);
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JavaFileManager fm2 = createFileManager(fk, f2);
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try {
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// If the directories or zip files match, we expect "n" matches in
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// the "n-squared" comparisons to come, where "n" is the number of
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// entries in the the directories or zip files.
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// If the directories or zip files don't themselves match,
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// we obviously don't expect any of their contents to match either.
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int expect = (f1.getAbsoluteFile().equals(f2.getAbsoluteFile()) ? paths.length : 0);
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System.err.println("test " + (++count) + " " + fk + " " + ck + " " + f1 + " " + f2);
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test(fm1, fm2, expect);
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} finally {
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fm1.close();
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fm2.close();
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}
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}
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// For a pair of file managers that may or may not have similar entries
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// on the classpath, compare all files returned from one against all files
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// returned from the other. For each pair of files, verify that if they
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// are equal, the hashcode is equal as well, and finally verify that the
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// expected number of matches was found.
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void test(JavaFileManager fm1, JavaFileManager fm2, int expectEqualCount) throws IOException {
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boolean foundFiles1 = false;
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boolean foundFiles2 = false;
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int foundEqualCount = 0;
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Set<JavaFileObject.Kind> kinds = EnumSet.allOf(JavaFileObject.Kind.class);
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for (FileObject fo1: fm1.list(StandardLocation.CLASS_PATH, "p", kinds, false)) {
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foundFiles1 = true;
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foundClasses.add(fo1.getClass().getSimpleName());
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for (FileObject fo2: fm2.list(StandardLocation.CLASS_PATH, "p", kinds, false)) {
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foundFiles2 = true;
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foundClasses.add(fo1.getClass().getSimpleName());
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System.err.println("compare " + fo1 + " " + fo2);
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if (fo1.equals(fo2)) {
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foundEqualCount++;
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int hash1 = fo1.hashCode();
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int hash2 = fo2.hashCode();
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if (hash1 != hash2)
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error("hashCode error: " + fo1 + " [" + hash1 + "] "
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+ fo2 + " [" + hash2 + "]");
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}
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}
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}
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if (!foundFiles1)
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error("no files found for file manager 1");
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if (!foundFiles2)
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error("no files found for file manager 2");
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// verify the expected number of matches were found
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if (foundEqualCount != expectEqualCount)
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error("expected matches not found: expected " + expectEqualCount + ", found " + foundEqualCount);
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}
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// create a file manager to test a FileKind, with a given directory
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// or zip file placed on the classpath
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JavaFileManager createFileManager(FileKind fk, File classpath) throws IOException {
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StandardJavaFileManager fm = createFileManager(fk == FileKind.ZIP);
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fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(classpath));
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return fm;
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}
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JavacFileManager createFileManager(boolean useJavaUtilZip) {
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// javac should really not be using system properties like this
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// -- it should really be using (hidden) options -- but until then
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// take care to leave system properties as we find them, so as not
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// to adversely affect other tests that might follow.
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String prev = System.getProperty("useJavaUtilZip");
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boolean resetProperties = false;
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try {
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if (useJavaUtilZip) {
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System.setProperty("useJavaUtilZip", "true");
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resetProperties = true;
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} else if (System.getProperty("useJavaUtilZip") != null) {
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System.getProperties().remove("useJavaUtilZip");
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resetProperties = true;
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}
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Context c = new Context();
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return new JavacFileManager(c, false, null);
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} finally {
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if (resetProperties) {
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if (prev == null) {
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System.getProperties().remove("useJavaUtilZip");
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} else {
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System.setProperty("useJavaUtilZip", prev);
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}
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}
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}
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}
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// create a directory containing a given set of paths
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void createTestDir(File dir, String[] paths) throws IOException {
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for (String p: paths) {
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File file = new File(dir, p);
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file.getParentFile().mkdirs();
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FileWriter out = new FileWriter(file);
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try {
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out.write(p);
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} finally {
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out.close();
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}
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}
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}
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// create a sip file containing a given set of entries
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void createTestZip(File zip, String[] paths) throws IOException {
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if (zip.getParentFile() != null)
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zip.getParentFile().mkdirs();
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ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zip));
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try {
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for (String p: paths) {
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ZipEntry ze = new ZipEntry(p);
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zos.putNextEntry(ze);
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byte[] bytes = p.getBytes();
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zos.write(bytes, 0, bytes.length);
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zos.closeEntry();
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}
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} finally {
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zos.close();
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}
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}
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void error(String msg) {
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System.err.println("Error: " + msg);
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errors++;
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}
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int count;
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int errors;
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Set<String> foundClasses = new HashSet<String>();
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}
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