257 lines
9.3 KiB
Java
257 lines
9.3 KiB
Java
/*
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* Copyright (c) 2009, 2022, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* 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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* @modules jdk.compiler/com.sun.tools.javac.file
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* jdk.compiler/com.sun.tools.javac.util
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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 javax.tools.JavaFileManager.Location;
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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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enum FileKind {
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DIR("dir"),
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ZIP("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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@Override
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File other(File f) { return f; }
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},
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ABSOLUTE {
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@Override
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File other(File f) { return f.getAbsoluteFile(); }
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},
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DIFFERENT {
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@Override
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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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@Override
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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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boolean fileNameIsCaseSignificant = isFileNameCaseSignificant();
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boolean fileLookupIsCaseSignificant = isFileLookupCaseSignificant();
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String osName = System.getProperty("os.name");
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System.err.println("OS: " + osName);
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System.err.println("fileNameIsCaseSignificant:" + fileNameIsCaseSignificant);
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System.err.println("fileLookupIsCaseSignificant:" + fileLookupIsCaseSignificant);
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// on Windows, verify file system is not case significant
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if ((osName.startsWith("windows")) && fileNameIsCaseSignificant) {
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error("fileNameIsCaseSignificant is set on " + osName + ".");
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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 (fileNameIsCaseSignificant || fileLookupIsCaseSignificant) {
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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<>(Arrays.asList(
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"DirectoryFileObject",
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"JarFileObject" ));
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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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try (StandardJavaFileManager fm = createFileManager()) {
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File f1 = fk.file;
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Location l1 = createLocation(fm, "l1", f1);
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File f2 = ck.other(fk.file);
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Location l2 = createLocation(fm, "l2", f2);
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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 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 expectEqualCount = (f1.getCanonicalFile().equals(f2.getCanonicalFile()) ? paths.length : 0);
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System.err.println("test " + (++count) + " " + fk + " " + ck + " " + f1 + " " + f2);
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test(fm, l1, l2, expectEqualCount);
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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 fm, Location l1, Location l2, 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: fm.list(l1, "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: fm.list(l2, "p", kinds, false)) {
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foundFiles2 = true;
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foundClasses.add(fo2.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 location " + l1);
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if (!foundFiles2)
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error("no files found for location " + l2);
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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 and initialize a location to test a FileKind, with a given directory
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// or zip file placed on the path
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Location createLocation(StandardJavaFileManager fm, String name, File classpath) throws IOException {
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Location l = new Location() {
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@Override
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public String getName() {
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return name;
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}
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@Override
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public boolean isOutputLocation() {
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return false;
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}
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};
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fm.setLocation(l, Arrays.asList(classpath));
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return l;
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}
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JavacFileManager createFileManager() {
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Context ctx = new Context();
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return new JavacFileManager(ctx, false, null);
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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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try (FileWriter out = new FileWriter(file)) {
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out.write(p);
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}
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}
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}
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// create a zip 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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try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zip))) {
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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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}
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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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boolean isFileNameCaseSignificant() {
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File lower = new File("test.txt");
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File upper = new File(lower.getPath().toUpperCase());
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return !lower.equals(upper);
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}
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boolean isFileLookupCaseSignificant() throws IOException {
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File lower = new File("test.txt");
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File upper = new File(lower.getPath().toUpperCase());
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if (upper.exists()) {
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upper.delete();
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}
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try (FileWriter out = new FileWriter(lower)) { }
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return !upper.exists();
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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<>();
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}
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