test/langtools/tools/javac/defaultMethods/CheckACC_STRICTFlagOnDefaultMethodTest.java

/*
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 8012723
 * @summary strictfp interface misses strictfp modifer on default method
 * @modules jdk.jdeps/com.sun.tools.classfile
 * @run main CheckACC_STRICTFlagOnDefaultMethodTest
 */

import java.util.ArrayList;
import java.util.List;
import java.io.File;
import java.io.IOException;

import com.sun.tools.classfile.ClassFile;
import com.sun.tools.classfile.ConstantPoolException;
import com.sun.tools.classfile.Descriptor;
import com.sun.tools.classfile.Descriptor.InvalidDescriptor;
import com.sun.tools.classfile.Method;

import static com.sun.tools.classfile.AccessFlags.ACC_STRICT;

public class CheckACC_STRICTFlagOnDefaultMethodTest {
    private static final String AssertionErrorMessage =
        "All methods should have the ACC_STRICT access flag " +
        "please check output";
    private static final String offendingMethodErrorMessage =
        "Method %s of class %s doesn't have the ACC_STRICT access flag";

    private List<String> errors = new ArrayList<>();

    public static void main(String[] args)
            throws IOException, ConstantPoolException, InvalidDescriptor {
        new CheckACC_STRICTFlagOnDefaultMethodTest().run();
    }

    private void run()
            throws IOException, ConstantPoolException, InvalidDescriptor {
        String testClasses = System.getProperty("test.classes");
        check(testClasses,
                "CheckACC_STRICTFlagOnDefaultMethodTest$StrictfpInterface.class");
        if (errors.size() > 0) {
            for (String error: errors) {
                System.err.println(error);
            }
            throw new AssertionError(AssertionErrorMessage);
        }
    }

    void check(String dir, String... fileNames)
        throws
            IOException,
            ConstantPoolException,
            Descriptor.InvalidDescriptor {
        for (String fileName : fileNames) {
            ClassFile classFileToCheck = ClassFile.read(new File(dir, fileName));

            for (Method method : classFileToCheck.methods) {
                if ((method.access_flags.flags & ACC_STRICT) == 0) {
                    errors.add(String.format(offendingMethodErrorMessage,
                            method.getName(classFileToCheck.constant_pool),
                            classFileToCheck.getName()));
                }
            }
        }
    }

    strictfp interface StrictfpInterface {
        default void default_interface_method() {}
        static void static_interface_method() {}
    }

}