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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.XMLBasedAjcTestCase;
- import org.aspectj.testing.XMLBasedAjcTestCaseForJava9OrLater;
-
- import java.util.Objects;
-
- /**
- * @author Alexander Kriegisch
- */
- public class CompileWithReleaseTests extends XMLBasedAjcTestCaseForJava9OrLater {
-
- /**
- * 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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