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/*
* Copyright (c) 2022, Huawei Technologies Co., Ltd. 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 8240903
* @key intermittent
* @summary Test consistency of moduleHashes attribute between builds
* @library /test/lib
* @run testng HashesOrderTest
*/
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.spi.ToolProvider;
import java.util.stream.Collectors;
import jdk.test.lib.compiler.ModuleInfoMaker;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
public class HashesOrderTest {
private ToolProvider JMOD_TOOL = ToolProvider.findFirst("jmod")
.orElseThrow(() ->
new RuntimeException("jmod tool not found")
);
// buffer size used for reading and writing
private static final int BUFFER_SIZE = 8192;
private int NUM_MODULES = 64;
private Path mods;
private Path lib1;
private Path lib2;
private ModuleInfoMaker builder;
@Test
public void test() throws Exception {
mods = Path.of("mods");
lib1 = Path.of("lib1");
lib2 = Path.of("lib2");
builder = new ModuleInfoMaker(Path.of("src"));
Files.createDirectories(mods);
Files.createDirectories(lib1);
Files.createDirectories(lib2);
makeModule("ma");
String moduleName;
for (int i = 0; i < NUM_MODULES; i++) {
moduleName = "m" + i + "b";
makeModule(moduleName, "ma");
makeJmod(moduleName, lib1);
makeJmod(moduleName, lib2);
}
makeJmod("ma", lib1, "--module-path", lib1.toString(),
"--hash-modules", ".*");
Path jmod1 = lib1.resolve("ma.jmod");
makeJmod("ma", lib2, "--module-path", lib2.toString(),
"--hash-modules", ".*");
Path jmod2 = lib2.resolve("ma.jmod");
assertEquals(mismatch(jmod1, jmod2), -1);
}
private void makeModule(String mn, String... deps)
throws IOException
{
StringBuilder sb = new StringBuilder();
sb.append("module ")
.append(mn)
.append(" {")
.append("\n");
Arrays.stream(deps)
.forEach(req -> {
sb.append(" requires ");
sb.append(req)
.append(";\n");
});
sb.append("}\n");
builder.writeJavaFiles(mn, sb.toString());
builder.compile(mn, mods);
}
private void makeJmod(String moduleName, Path libName, String... options) {
Path mclasses = mods.resolve(moduleName);
Path outfile = libName.resolve(moduleName + ".jmod");
List<String> args = new ArrayList<>();
args.add("create");
Collections.addAll(args, options);
Collections.addAll(args, "--class-path", mclasses.toString(),
outfile.toString());
runJmod(args);
}
private void runJmod(List<String> args) {
runJmod(args.toArray(new String[args.size()]));
}
private void runJmod(String... args) {
int rc = JMOD_TOOL.run(System.out, System.out, args);
System.out.println("jmod " + Arrays.stream(args).collect(Collectors.joining(" ")));
if (rc != 0) {
throw new AssertionError("jmod failed: rc = " + rc);
}
}
private long mismatch(Path path, Path path2) throws IOException {
if (Files.isSameFile(path, path2)) {
return -1;
}
byte[] buffer1 = new byte[BUFFER_SIZE];
byte[] buffer2 = new byte[BUFFER_SIZE];
try (InputStream in1 = Files.newInputStream(path);
InputStream in2 = Files.newInputStream(path2);) {
long totalRead = 0;
while (true) {
int nRead1 = in1.readNBytes(buffer1, 0, BUFFER_SIZE);
int nRead2 = in2.readNBytes(buffer2, 0, BUFFER_SIZE);
int i = Arrays.mismatch(buffer1, 0, nRead1, buffer2, 0, nRead2);
if (i > -1) {
return totalRead + i;
}
if (nRead1 < BUFFER_SIZE) {
// we've reached the end of the files, but found no mismatch
return -1;
}
totalRead += nRead1;
}
}
}
}
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