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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * 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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/**

 * @test

 * @summary simple tests of javac compilation modes

 * @library /tools/lib

 * @modules

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

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

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

 * @run main HelloWorldTest

 */

import java.nio.file.*;

import javax.tools.*;

import toolbox.JarTask;

import toolbox.JavacTask;

import toolbox.Task;

import toolbox.ToolBox;

public class HelloWorldTest extends ModuleTestBase {

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

        HelloWorldTest t = new HelloWorldTest();

        t.runTests();

    }

    public static final String HELLO_WORLD =

          "class HelloWorld {\n"

        + "    public static void main(String... args) {\n"

        + "        System.out.println(\"Hello World!\");\n"

        + "    }\n"

        + "}";

    public static final String PKG_HELLO_WORLD =

          "package p;\n"

        + HELLO_WORLD;

    @Test

    public void testLegacyMode(Path base) throws Exception {

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

        tb.writeJavaFiles(src, HELLO_WORLD);

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

        Files.createDirectories(classes);

        Path smallRtJar = base.resolve("small-rt.jar");

        try (JavaFileManager fm = ToolProvider.getSystemJavaCompiler().getStandardFileManager(null, null, null)) {

            new JarTask(tb, smallRtJar)

                .files(fm, StandardLocation.PLATFORM_CLASS_PATH,

                    "java.lang.**", "java.io.*", "java.util.*")

                .run();

        }

        new JavacTask(tb)

            .options("-source", "8",

                "-target", "8",

                "--boot-class-path", smallRtJar.toString())

            .outdir(classes)

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

            .run();

        checkFiles(classes.resolve("HelloWorld.class"));

    }

    @Test

    public void testUnnamedModule(Path base) throws Exception {

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

        tb.writeJavaFiles(src, HELLO_WORLD);

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

        Files.createDirectories(classes);

        new JavacTask(tb)

            .outdir(classes)

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

            .run();

        checkFiles(classes.resolve("HelloWorld.class"));

    }

    @Test

    public void testSingleModule(Path base) throws Exception {

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

        tb.writeFile(src.resolve("module-info.java"), "module m { }");

        tb.writeJavaFiles(src, PKG_HELLO_WORLD);

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

        Files.createDirectories(classes);

        new JavacTask(tb, Task.Mode.CMDLINE)

            .outdir(classes)

            .files(src.resolve("module-info.java"), src.resolve("p/HelloWorld.java"))

            .run()

            .writeAll();

        checkFiles(

            classes.resolve("module-info.class"),

            classes.resolve("p/HelloWorld.class"));

    }

    @Test

    public void testModuleSourcePath(Path base) throws Exception {

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

        Path src_m = src.resolve("m");

        tb.writeFile(src_m.resolve("module-info.java"), "module m { }");

        tb.writeJavaFiles(src_m, PKG_HELLO_WORLD);

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

        Files.createDirectories(classes);

        new JavacTask(tb)

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

            .outdir(classes)

            .files(src_m.resolve("p/HelloWorld.java"))

            .run()

            .writeAll();

        checkFiles(

            classes.resolve("m/module-info.class"),

            classes.resolve("m/p/HelloWorld.class"));

    }

    void checkFiles(Path... files) throws Exception {

        for (Path f: files) {

            if (!Files.exists(f))

                throw new Exception("expected file not found: " + f);

        }

    }

}