/*

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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.

 *

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

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 */

/*

 * @test

 * @summary tests for multi-module mode compilation

 * @library /tools/lib

 * @modules

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

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

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

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

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

 * @run main XModuleTest

 */

import java.nio.file.Path;

import java.util.Arrays;

import java.util.List;

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.ModuleElement;

import javax.lang.model.element.TypeElement;

import javax.lang.model.util.Elements;

import com.sun.tools.javac.code.Symtab;

import com.sun.tools.javac.processing.JavacProcessingEnvironment;

import toolbox.JavacTask;

import toolbox.ModuleBuilder;

import toolbox.Task;

import toolbox.Task.Expect;

public class XModuleTest extends ModuleTestBase {

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

        new XModuleTest().runTests();

    }

    @Test

    public void testCorrectXModule(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

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

        tb.writeJavaFiles(src, "package javax.lang.model.element; public interface Extra extends Element { }");

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

        tb.createDirectories(classes);

        String log = new JavacTask(tb)

                .options("-Xmodule:java.compiler")

                .outdir(classes)

                .files(findJavaFiles(src))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.isEmpty())

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testSourcePath(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

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

        tb.writeJavaFiles(src, "package javax.lang.model.element; public interface Extra extends Element, Other { }", "package javax.lang.model.element; interface Other { }");

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

        tb.createDirectories(classes);

        String log = new JavacTask(tb)

                .options("-Xmodule:java.compiler", "-sourcepath", src.toString())

                .outdir(classes)

                .files(src.resolve("javax/lang/model/element/Extra.java"))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.isEmpty())

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testClassPath(Path base) throws Exception {

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

        tb.writeJavaFiles(cpSrc, "package p; public interface Other { }");

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

        tb.createDirectories(cpClasses);

        String cpLog = new JavacTask(tb)

                .outdir(cpClasses)

                .files(findJavaFiles(cpSrc))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!cpLog.isEmpty())

            throw new Exception("expected output not found: " + cpLog);

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

        //note: avoiding use of java.base, as that gets special handling on some places:

        tb.writeJavaFiles(src, "package javax.lang.model.element; public interface Extra extends Element, p.Other { }");

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

        tb.createDirectories(classes);

        List<String> log = new JavacTask(tb)

                .options("-Xmodule:java.compiler",

                         "--class-path", cpClasses.toString(),

                         "-XDrawDiagnostics")

                .outdir(classes)

                .files(src.resolve("javax/lang/model/element/Extra.java"))

                .run(Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expectedOut = Arrays.asList(

                "Extra.java:1:76: compiler.err.doesnt.exist: p",

                "1 error"

        );

        if (!expectedOut.equals(log))

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testNoModuleInfoOnSourcePath(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

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

        tb.writeJavaFiles(src,

                          "module java.compiler {}",

                          "package javax.lang.model.element; public interface Extra { }");

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

        tb.createDirectories(classes);

        List<String> log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-Xmodule:java.compiler")

                .outdir(classes)

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList("Extra.java:1:1: compiler.err.module-info.with.xmodule.sourcepath",

                                              "1 error");

        if (!expected.equals(log))

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testNoModuleInfoInClassOutput(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

        Path srcMod = base.resolve("src-mod");

        tb.writeJavaFiles(srcMod,

                          "module mod {}");

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

        tb.createDirectories(classes);

        String logMod = new JavacTask(tb)

                .options()

                .outdir(classes)

                .files(findJavaFiles(srcMod))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!logMod.isEmpty())

            throw new Exception("unexpected output found: " + logMod);

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

        tb.writeJavaFiles(src,

                          "package javax.lang.model.element; public interface Extra { }");

        tb.createDirectories(classes);

        List<String> log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-Xmodule:java.compiler")

                .outdir(classes)

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList("Extra.java:1:1: compiler.err.module-info.with.xmodule.classpath",

                                              "1 error");

        if (!expected.equals(log))

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testModuleSourcePathXModule(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

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

        tb.writeJavaFiles(src, "package javax.lang.model.element; public interface Extra extends Element { }");

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

        tb.createDirectories(classes);

        List<String> log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-Xmodule:java.compiler", "--module-source-path", src.toString())

                .outdir(classes)

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        if (!expected.equals(log))

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testXModuleTooMany(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

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

        tb.writeJavaFiles(src, "package javax.lang.model.element; public interface Extra extends Element { }");

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

        tb.createDirectories(classes);

        List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)

                .options("-XDrawDiagnostics", "-Xmodule:java.compiler", "-Xmodule:java.compiler")

                .outdir(classes)

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList("javac: option -Xmodule: can only be specified once",

                                              "Usage: javac <options> <source files>",

                                              "use --help for a list of possible options");

        if (!expected.equals(log))

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testWithModulePath(Path base) throws Exception {

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

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

        new ModuleBuilder(tb, "m1")

                .classes("package pkg1; public interface E { }")

                .build(modSrc, modules);

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

        tb.writeJavaFiles(src, "package p; interface A extends pkg1.E { }");

        new JavacTask(tb, Task.Mode.CMDLINE)

                .options("--module-path", modules.toString(),

                        "-Xmodule:m1")

                .files(findJavaFiles(src))

                .run()

                .writeAll();

        //checks module bounds still exist

        new ModuleBuilder(tb, "m2")

                .classes("package pkg2; public interface D { }")

                .build(modSrc, modules);

        Path src2 = base.resolve("src2");

        tb.writeJavaFiles(src2, "package p; interface A extends pkg2.D { }");

        List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)

                .options("-XDrawDiagnostics",

                        "--module-path", modules.toString(),

                        "-Xmodule:m1")

                .files(findJavaFiles(src2))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList("A.java:1:36: compiler.err.doesnt.exist: pkg2",

                "1 error");

        if (!expected.equals(log))

            throw new Exception("expected output not found: " + log);

    }

    @Test

    public void testWithUpgradeModulePath(Path base) throws Exception {

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

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

        new ModuleBuilder(tb, "m1")

                .classes("package pkg1; public interface E { }")

                .build(modSrc, modules);

        Path upgrSrc = base.resolve("upgradeSrc");

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

        new ModuleBuilder(tb, "m1")

                .classes("package pkg1; public interface D { }")

                .build(upgrSrc, upgrade);

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

        tb.writeJavaFiles(src, "package p; interface A extends pkg1.D { }");

        new JavacTask(tb, Task.Mode.CMDLINE)

                .options("--module-path", modules.toString(),

                        "--upgrade-module-path", upgrade.toString(),

                        "-Xmodule:m1")

                .files(findJavaFiles(src))

                .run()

                .writeAll();

    }

    @Test

    public void testUnnamedIsolation(Path base) throws Exception {

        //note: avoiding use of java.base, as that gets special handling on some places:

        Path sourcePath = base.resolve("source-path");

        tb.writeJavaFiles(sourcePath, "package src; public class Src {}");

        Path classPathSrc = base.resolve("class-path-src");

        tb.writeJavaFiles(classPathSrc, "package cp; public class CP { }");

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

        tb.createDirectories(classPath);

        String cpLog = new JavacTask(tb)

                .outdir(classPath)

                .files(findJavaFiles(classPathSrc))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!cpLog.isEmpty())

            throw new Exception("expected output not found: " + cpLog);

        Path modulePathSrc = base.resolve("module-path-src");

        tb.writeJavaFiles(modulePathSrc,

                          "module m {}",

                          "package m; public class M {}");

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

        tb.createDirectories(modulePath.resolve("m"));

        String modLog = new JavacTask(tb)

                .outdir(modulePath.resolve("m"))

                .files(findJavaFiles(modulePathSrc))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!modLog.isEmpty())

            throw new Exception("expected output not found: " + modLog);

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

        tb.writeJavaFiles(src, "package m; public class Extra { }");

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

        tb.createDirectories(classes);

        String log = new JavacTask(tb)

                .options("-Xmodule:m",

                         "--class-path", classPath.toString(),

                         "--source-path", sourcePath.toString(),

                         "--module-path", modulePath.toString(),

                         "--processor-path", System.getProperty("test.classes"),

                         "-XDaccessInternalAPI=true",

                         "-processor", CheckModuleContentProcessing.class.getName())

                .outdir(classes)

                .files(findJavaFiles(sourcePath))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.isEmpty())

            throw new Exception("expected output not found: " + log);

    }

    @SupportedAnnotationTypes("*")

    public static final class CheckModuleContentProcessing extends AbstractProcessor {

        @Override

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

            Symtab syms = Symtab.instance(((JavacProcessingEnvironment) processingEnv).getContext());

            Elements elements = processingEnv.getElementUtils();

            ModuleElement unnamedModule = syms.unnamedModule;

            ModuleElement mModule = elements.getModuleElement("m");

            assertNonNull("mModule found", mModule);

            assertNonNull("src.Src from m", elements.getTypeElement(mModule, "src.Src"));

            assertNull("cp.CP not from m", elements.getTypeElement(mModule, "cp.CP"));

            assertNull("src.Src not from unnamed", elements.getTypeElement(unnamedModule, "src.Src"));

            assertNonNull("cp.CP from unnamed", elements.getTypeElement(unnamedModule, "cp.CP"));

            return false;

        }

        @Override

        public SourceVersion getSupportedSourceVersion() {

            return SourceVersion.latest();

        }

        private static void assertNonNull(String msg, Object val) {

            if (val == null) {

                throw new AssertionError(msg);

            }

        }

        private static void assertNull(String msg, Object val) {

            if (val != null) {

                throw new AssertionError(msg);

            }

        }

    }

}