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/*******************************************************************************
* Copyright (c) 2021 Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*******************************************************************************/
package org.aspectj.systemtest.ajc198;
import junit.framework.Test;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.JavaClass;
import org.aspectj.apache.bcel.classfile.Method;
import org.aspectj.testing.JavaVersionSpecificXMLBasedAjcTestCase;
import org.aspectj.testing.XMLBasedAjcTestCase;
import java.util.Objects;
/**
* @author Alexander Kriegisch
*/
public class CompileWithReleaseTests extends JavaVersionSpecificXMLBasedAjcTestCase {
public CompileWithReleaseTests() {
super(9);
}
/**
* In order to avoid a complicated test involving two different JDKs (9+ for compilation, 8 for runtime), we inspect
* the byte code of test class {@code Buffers} with BCEL, simply grepping on the disassembled byte code. If compiled
* correctly with {@code --release 8}, the byte code should contain the equivalent of a {@code Buffer.flip()} call,
* not a {@code ByteBuffer.flip()} one.
*/
public void testCompileToOlderJDKRelease() {
runTest("compile to older JDK release");
// Check compiled byte code version
String className = "Buffers";
checkVersion(className, Constants.ClassFileVersion.of(8).MAJOR, Constants.ClassFileVersion.of(8).MINOR);
// Disassemble method and check if Java 8 API is used as expected
JavaClass javaClass;
try {
javaClass = getClassFrom(ajc.getSandboxDirectory(), className);
}
catch (ClassNotFoundException e) {
throw new IllegalStateException("Cannot find class " + className, e);
}
Method method = Objects.requireNonNull(getMethodFromClass(javaClass, "flip"));
String disassembledMethod = method.getCode().toString();
final String JAVA8_API_CALL = "invokevirtual\tjava.nio.ByteBuffer.flip ()Ljava/nio/Buffer;";
final String JAVA9_API_CALL = "invokevirtual\tjava.nio.ByteBuffer.flip ()Ljava/nio/ByteBuffer;";
if (disassembledMethod.contains(JAVA9_API_CALL))
fail(
"Class '" + className + "' was compiled against Java 9+ API. " +
"There seems to be a problem with the '--release' compiler option.\n" +
"Disassembled method:\n" + disassembledMethod
);
else if (!disassembledMethod.contains(JAVA8_API_CALL))
fail(
"Cannot determine if class '" + className + "' was compiled against Java 8 or 9+ API. " +
"This should never happen.\n" +
"Disassembled method:\n" + disassembledMethod
);
}
public static Test suite() {
return XMLBasedAjcTestCase.loadSuite(CompileWithReleaseTests.class);
}
@Override
protected java.net.URL getSpecFile() {
return getClassResource("ajc198.xml");
}
}
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