/*

 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

 * 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).

 *

 * 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 8161501

 * @summary JSR269 jigsaw update: javax.lang.model.element.ModuleElement.getEnclosedElements() on unnamed module with unnamed package

 * @compile UnnamedModuleUnnamedPackageTest.java

 * @compile -processor UnnamedModuleUnnamedPackageTest UnnamedModuleUnnamedPackageTest.java EmptyClass.java

 */

import javax.annotation.processing.AbstractProcessor;

import javax.annotation.processing.RoundEnvironment;

import javax.annotation.processing.SupportedAnnotationTypes;

import javax.lang.model.SourceVersion;

import javax.lang.model.element.*;

import java.util.*;

import java.util.stream.Collectors;

@SupportedAnnotationTypes("*")

public class UnnamedModuleUnnamedPackageTest extends AbstractProcessor {

    static final Set<String> expected = new HashSet<>(Arrays.asList("unnamed package", "pkg1"));

    @Override

    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

        for (Element e: roundEnv.getRootElements()) {

            Element m = e.getEnclosingElement();

            while (!(m instanceof ModuleElement)) {

                m = m.getEnclosingElement();

            }

            Set<String> found = m.getEnclosedElements().stream()

                .map(p -> ((PackageElement)p).isUnnamed() ?

                                        "unnamed package" :

                                        ((PackageElement)p).getQualifiedName().toString())

                .collect(Collectors.toSet());

            if (!Objects.equals(expected, found)) {

                System.err.println("expected: " + expected);

                System.err.println("found: " + found);

                throw new AssertionError("unexpected packages found");

            }

        }

        return false;

    }

    @Override

    public SourceVersion getSupportedSourceVersion() {

        return SourceVersion.latest();

    }

}