test/tools/javac/classfiles/attributes/Module/ModuleFlagTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 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 8080878
 * @summary Checking ACC_MODULE flag is generated for module-info.
 * @library /tools/lib
 * @modules jdk.compiler/com.sun.tools.javac.api
 *          jdk.compiler/com.sun.tools.javac.main
 *          jdk.compiler/com.sun.tools.javac.util
 *          jdk.jdeps/com.sun.tools.classfile
 *          jdk.jdeps/com.sun.tools.javap
 * @build ToolBox
 * @run main ModuleFlagTest
 */

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

import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;

public class ModuleFlagTest {
    public static void main(String[] args) throws IOException, ConstantPoolException {
        Path outdir = Paths.get(".");
        ToolBox tb = new ToolBox();
        final Path moduleInfo = Paths.get("module-info.java");
        tb.writeFile(moduleInfo, "module test_module{}");
        tb.new JavacTask()
                .outdir(outdir)
                .files(moduleInfo)
                .run();

        AccessFlags accessFlags = ClassFile.read(outdir.resolve("module-info.class"))
                .access_flags;
        if (!accessFlags.is(AccessFlags.ACC_MODULE)) {
            throw new RuntimeException("Classfile doesn't have module access flag");
        }
    }
}