test/tools/javac/classfiles/attributes/innerclasses/NoInnerClassesTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8042251
 * @summary Test that there are no inner classes attributes in case of there are no inner classes.
 * @library /tools/lib /tools/javac/lib ../lib
 * @modules jdk.compiler/com.sun.tools.javac.api
 *          jdk.compiler/com.sun.tools.javac.file
 *          jdk.compiler/com.sun.tools.javac.main
 *          jdk.jdeps/com.sun.tools.classfile
 *          jdk.jdeps/com.sun.tools.javap
 * @build TestBase InMemoryFileManager ToolBox
 * @run main NoInnerClassesTest
 */

import com.sun.tools.classfile.Attribute;
import com.sun.tools.classfile.ClassFile;
import com.sun.tools.classfile.ConstantPoolException;

import java.io.IOException;

public class NoInnerClassesTest extends TestBase {

    public static void main(String[] args) throws IOException, ConstantPoolException {
        new NoInnerClassesTest().test();
    }

    public void test() throws IOException, ConstantPoolException {
        ClassFile classFile = readClassFile("NoInnerClassesTest");
        assertNull(classFile.getAttribute(Attribute.InnerClasses), "Found inner class attribute");
    }
}