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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).

 *

 * 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

 * @summary simple tests of module uses

 * @library /tools/lib

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

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

 *          jdk.jdeps/com.sun.tools.classfile

 * @build toolbox.ToolBox toolbox.JavacTask toolbox.ModuleBuilder ModuleTestBase

 * @run main ModuleVersion

 */

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import com.sun.tools.classfile.Attribute;

import com.sun.tools.classfile.ClassFile;

import com.sun.tools.classfile.ConstantPoolException;

import com.sun.tools.classfile.Module_attribute;

import toolbox.JavacTask;

import toolbox.Task.Expect;

import toolbox.Task.OutputKind;

public class ModuleVersion extends ModuleTestBase {

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

        ModuleVersion t = new ModuleVersion();

        t.runTests();

    }

    @Test

    public void testSetSingleModuleVersion(Path base) throws Exception {

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

        tb.writeJavaFiles(src,

                "module m { }");

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

        Files.createDirectories(classes);

        String version = "1.2.3.4";

        new JavacTask(tb)

            .options("--module-version", version)

            .outdir(classes)

            .files(findJavaFiles(src))

            .run()

            .writeAll();

        checkModuleVersion(classes.resolve("module-info.class"), version);

    }

    @Test

    public void testMultipleModuleVersions(Path base) throws Exception {

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

        Path m1 = src.resolve("m1");

        tb.writeJavaFiles(m1,

                "module m1 { }");

        Path m2 = src.resolve("m2");

        tb.writeJavaFiles(m2,

                "module m2 { }");

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

        Files.createDirectories(classes);

        String version = "1.2.3.4";

        new JavacTask(tb)

            .options("--module-source-path", src.toString(),

                     "--module-version", version)

            .outdir(classes)

            .files(findJavaFiles(src))

            .run()

            .writeAll();

        checkModuleVersion(classes.resolve("m1").resolve("module-info.class"), version);

        checkModuleVersion(classes.resolve("m2").resolve("module-info.class"), version);

        String log = new JavacTask(tb, JavacTask.Mode.CMDLINE)

            .options("--module-source-path", src.toString(),

                     "--module-version", "b",

                     "-XDrawDiagnostics")

            .outdir(classes)

            .files(findJavaFiles(src))

            .run(Expect.FAIL)

            .writeAll()

            .getOutput(OutputKind.DIRECT);

        String expectedLog = "bad value for --module-version option: 'b'";

        if (!log.contains(expectedLog)) {

            throw new AssertionError("Incorrect log: " + log);

        }

    }

    private void checkModuleVersion(Path classfile, String version) throws IOException, ConstantPoolException {

        ClassFile cf = ClassFile.read(classfile);

        Module_attribute moduleAttribute = (Module_attribute) cf.attributes.get(Attribute.Module);

        if (moduleAttribute == null) {

            throw new AssertionError("Version attribute missing!");

        }

        String actualVersion = cf.constant_pool.getUTF8Value(moduleAttribute.module_version_index);

        if (!version.equals(actualVersion)) {

            throw new AssertionError("Incorrect version in the classfile: " + actualVersion);

        }

    }

}