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// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package org.objectweb.asm.util;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assumptions.assumeTrue;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import org.codehaus.commons.compiler.CompileException;
import org.codehaus.janino.ClassLoaderIClassLoader;
import org.codehaus.janino.IClassLoader;
import org.codehaus.janino.Parser;
import org.codehaus.janino.Scanner;
import org.codehaus.janino.UnitCompiler;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.test.AsmTest;
import org.objectweb.asm.test.ClassFile;
/**
* Unit tests for {@link ASMifier}.
*
* @author Eugene Kuleshov
* @author Eric Bruneton
*/
// DontCheck(AbbreviationAsWordInName)
class ASMifierTest extends AsmTest {
private static final String EXPECTED_USAGE =
"Prints the ASM code to generate the given class.\n"
+ "Usage: ASMifier [-nodebug] <fully qualified class name or class file name>";
private static final IClassLoader ICLASS_LOADER =
new ClassLoaderIClassLoader(new URLClassLoader(new URL[0]));
@Test
void testConstructor() {
assertDoesNotThrow(() -> new ASMifier());
assertThrows(IllegalStateException.class, () -> new ASMifier() {});
}
/**
* Tests that the code produced with an ASMifier compiles and generates the original class.
*
* @throws Exception if something goes wrong.
*/
@ParameterizedTest
@MethodSource(ALL_CLASSES_AND_LATEST_API)
void testAsmify_precompiledClass(final PrecompiledClass classParameter, final Api apiParameter)
throws Exception {
byte[] classFile = classParameter.getBytes();
assumeTrue(classFile.length < Short.MAX_VALUE);
StringWriter output = new StringWriter();
TraceClassVisitor asmifier =
new TraceClassVisitor(
null,
new ASMifier(apiParameter.value(), "classWriter", 0) {},
new PrintWriter(output, true));
new ClassReader(classFile)
.accept(asmifier, new Attribute[] {new Comment(), new CodeComment()}, 0);
// Janino can't compile JDK9 modules.
assumeTrue(classParameter != PrecompiledClass.JDK9_MODULE);
byte[] asmifiedClassFile = compile(classParameter.getName(), output.toString());
Class<?> asmifiedClass = new ClassFile(asmifiedClassFile).newInstance().getClass();
byte[] dumpClassFile = (byte[]) asmifiedClass.getMethod("dump").invoke(null);
assertEquals(new ClassFile(classFile), new ClassFile(dumpClassFile));
}
private static byte[] compile(final String name, final String source) throws IOException {
Parser parser = new Parser(new Scanner(name, new StringReader(source)));
ArrayList<org.codehaus.janino.util.ClassFile> generatedClassFiles = new ArrayList<>();
try {
UnitCompiler unitCompiler =
new UnitCompiler(parser.parseAbstractCompilationUnit(), ICLASS_LOADER);
unitCompiler.compileUnit(true, true, true, generatedClassFiles);
return generatedClassFiles.get(0).toByteArray();
} catch (CompileException e) {
throw new AssertionError(source, e);
}
}
@Test
void testMain_missingClassName() throws IOException {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = new String[0];
ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertEquals("", output.toString());
assertEquals(EXPECTED_USAGE, logger.toString().trim());
}
@Test
void testMain_missingClassName_withNodebug() throws IOException {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {"-nodebug"};
ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertEquals("", output.toString());
assertEquals(EXPECTED_USAGE, logger.toString().trim());
}
@Test
void testMain_tooManyArguments() throws IOException {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {"-nodebug", getClass().getName(), "extraArgument"};
ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertEquals("", output.toString());
assertEquals(EXPECTED_USAGE, logger.toString().trim());
}
@Test
void testMain_classFileNotFound() {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {"DoNotExist.class"};
Executable main =
() -> ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertThrows(IOException.class, main);
assertEquals("", output.toString());
assertEquals("", logger.toString());
}
@Test
void testMain_classNotFound() {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {"do\\not\\exist"};
Executable main =
() -> ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertThrows(IOException.class, main);
assertEquals("", output.toString());
assertEquals("", logger.toString());
}
@Test
void testMain_className() throws IOException {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {getClass().getName()};
ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertTrue(output.toString().contains("public class ASMifierTestDump implements Opcodes"));
assertTrue(output.toString().contains("\nmethodVisitor.visitLineNumber("));
assertTrue(output.toString().contains("\nmethodVisitor.visitLocalVariable("));
assertEquals("", logger.toString());
}
@Test
void testMain_className_withNodebug() throws IOException {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {"-nodebug", getClass().getName()};
ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertTrue(output.toString().contains("public class ASMifierTestDump implements Opcodes"));
assertFalse(output.toString().contains("\nmethodVisitor.visitLineNumber("));
assertFalse(output.toString().contains("\nmethodVisitor.visitLocalVariable("));
assertEquals("", logger.toString());
}
@Test
void testMain_classFile() throws IOException {
StringWriter output = new StringWriter();
StringWriter logger = new StringWriter();
String[] args = {
ClassLoader.getSystemResource(getClass().getName().replace('.', '/') + ".class").getPath()
};
ASMifier.main(args, new PrintWriter(output, true), new PrintWriter(logger, true));
assertTrue(output.toString().contains("public class ASMifierTestDump implements Opcodes"));
assertEquals("", logger.toString());
}
}
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