/*

 * Copyright (c) 2015-2016, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

/*

 * @test

 * @summary tests for single module mode compilation

 * @library /tools/lib

 * @modules

 *      jdk.compiler/com.sun.tools.javac.api

 *      jdk.compiler/com.sun.tools.javac.main

 * @build toolbox.ToolBox toolbox.JavacTask ModuleTestBase

 * @run main SingleModuleModeTest

 */

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.Set;

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.TypeElement;

import toolbox.JavacTask;

import toolbox.Task;

import toolbox.ToolBox;

public class SingleModuleModeTest extends ModuleTestBase{

    public static void main(String... args) throws Exception {

        new SingleModuleModeTest().run();

    }

    void run() throws Exception {

        tb = new ToolBox();

        runTests();

    }

    @Test

    public void testTooManyModules(Path base) throws Exception {

        Path src = base.resolve("src");

        tb.writeJavaFiles(src.resolve("m1"), "module m1 { }");

        tb.writeJavaFiles(src.resolve("m2"), "module m2 { }");

        String log = new JavacTask(tb)

                .options("-XDrawDiagnostics")

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.contains("module-info.java:1:1: compiler.err.too.many.modules"))

            throw new Exception("expected output not found");

    }

    @Test

    public void testImplicitModuleSource(Path base) throws Exception {

        Path src = base.resolve("src");

        tb.writeJavaFiles(src,

                "module m { }",

                "class C { }");

        new JavacTask(tb)

                .classpath(src)

                .files(src.resolve("C.java"))

                .run()

                .writeAll();

    }

    @Test

    public void testImplicitModuleClass(Path base) throws Exception {

        Path src = base.resolve("src");

        tb.writeJavaFiles(src,

                "module m { }",

                "class C { }");

        Path classes = base.resolve("classes");

        Files.createDirectories(classes);

        new JavacTask(tb)

                .outdir(classes)

                .files(src.resolve("module-info.java"))

                .run()

                .writeAll();

        new JavacTask(tb)

                .classpath(classes)

                .files(src.resolve("C.java"))

                .run()

                .writeAll();

    }

    @Test

    public void testImplicitModuleClassAP(Path base) throws Exception {

        Path src = base.resolve("src");

        tb.writeJavaFiles(src,

                "module m { uses java.lang.Runnable; }",

                "class C { }");

        Path classes = base.resolve("classes");

        Files.createDirectories(classes);

        new JavacTask(tb)

                .outdir(classes)

                .files(src.resolve("module-info.java"))

                .run()

                .writeAll();

        new JavacTask(tb)

                .options("-processor", VerifyUsesProvides.class.getName(),

                         "-processorpath", System.getProperty("test.classes"))

                .outdir(classes)

                .classpath(classes)

                .files(src.resolve("C.java"))

                .run()

                .writeAll();

    }

    @Test

    public void testImplicitModuleSourceAP(Path base) throws Exception {

        Path src = base.resolve("src");

        tb.writeJavaFiles(src,

                "module m { uses java.lang.Runnable; }",

                "class C { }");

        Path classes = base.resolve("classes");

        Files.createDirectories(classes);

        new JavacTask(tb)

                .options("-processor", VerifyUsesProvides.class.getName(),

                         "-processorpath", System.getProperty("test.classes"))

                .outdir(classes)

                .sourcepath(src)

                .classpath(classes)

                .files(src.resolve("C.java"))

                .run()

                .writeAll();

    }

    @SupportedAnnotationTypes("*")

    public static final class VerifyUsesProvides extends AbstractProcessor {

        @Override

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

            if (processingEnv.getElementUtils().getModuleElement("m") == null) {

                throw new AssertionError();

            }

            return false;

        }

        @Override

        public SourceVersion getSupportedSourceVersion() {

            return SourceVersion.latest();

        }

    }

}