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/**

 * @test

 * @summary test module/package conflicts

 * @library /tools/lib

 * @modules

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

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

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

 * @run main PackageConflictTest

 */

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.Arrays;

import java.util.List;

import toolbox.JavacTask;

import toolbox.ModuleBuilder;

import toolbox.Task;

public class PackageConflictTest extends ModuleTestBase {

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

        PackageConflictTest t = new PackageConflictTest();

        t.runTests();

    }

    @Test

    public void testSimple(Path base) throws Exception {

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

        tb.writeJavaFiles(src,

                "package java.util; public class MyList { }");

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

        Files.createDirectories(classes);

        String log = new JavacTask(tb)

                .options("-XDrawDiagnostics")

                .outdir(classes)

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.contains("MyList.java:1:1: compiler.err.package.in.other.module: java.base"))

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

    }

    @Test

    public void testDisjoint(Path base) throws Exception {

        Path m1 = base.resolve("m1x");

        Path m2 = base.resolve("m2x");

        tb.writeJavaFiles(m1,

                          "module m1x { }",

                          "package test; public class A { }");

        tb.writeJavaFiles(m2,

                          "module m2x { }",

                          "package test; public class B { }");

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

        Files.createDirectories(classes);

        new JavacTask(tb)

          .options("-Werror", "--module-source-path", base.toString())

          .outdir(classes)

          .files(findJavaFiles(base))

          .run()

          .writeAll();

    }

    @Test

    public void testConflictInDependencies(Path base) throws Exception {

        Path m1 = base.resolve("m1x");

        Path m2 = base.resolve("m2x");

        Path m3 = base.resolve("m3x");

        tb.writeJavaFiles(m1,

                          "module m1x { exports test; }",

                          "package test; public class A { }");

        tb.writeJavaFiles(m2,

                          "module m2x { exports test; }",

                          "package test; public class B { }");

        tb.writeJavaFiles(m3,

                          "module m3x { requires m1x; requires m2x; }",

                          "package impl; public class Impl { }");

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

        Files.createDirectories(classes);

        List<String> log = new JavacTask(tb)

                       .options("-XDrawDiagnostics", "--module-source-path", base.toString())

                       .outdir(classes)

                       .files(findJavaFiles(base))

                       .run(Task.Expect.FAIL)

                       .writeAll()

                       .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected =

                Arrays.asList("module-info.java:1:1: compiler.err.package.clash.from.requires: m3x, test, m1x, m2x",

                              "1 error");

        if (!expected.equals(log)) {

            throw new AssertionError("Unexpected output: " + log);

        }

    }

    @Test

    public void testSimple2(Path base) throws Exception {

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

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

        new ModuleBuilder(tb, "N")

                .exports("pack")

                .classes("package pack; public class A { }")

                .build(modules);

        new ModuleBuilder(tb, "M")

                .requires("N")

                .classes("package pack; public class B { pack.A f; }")

                .write(modSrc);

        String log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-p", modules.toString())

                .outdir(Files.createDirectories(base.resolve("classes")))

                .files(findJavaFiles(modSrc.resolve("M")))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.contains("B.java:1:1: compiler.err.package.in.other.module: N"))

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

    }

    @Test

    public void testPrivateConflict(Path base) throws Exception {

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

        new ModuleBuilder(tb, "N")

                .exports("publ")

                .classes("package pack; public class A { }")

                .classes("package publ; public class B { }")

                .write(modSrc);

        new ModuleBuilder(tb, "M")

                .requires("N")

                .classes("package pack; public class C { publ.B b; }")

                .write(modSrc);

        String log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "--module-source-path", modSrc.toString())

                .outdir(Files.createDirectories(base.resolve("classes")))

                .files(findJavaFiles(modSrc))

                .run(Task.Expect.SUCCESS)

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.contains(""))

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

    }

    @Test

    public void testPrivateConflictOnModulePath(Path base) throws Exception {

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

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

        new ModuleBuilder(tb, "N")

                .exports("publ")

                .classes("package pack; public class A { }")

                .classes("package publ; public class B { }")

                .build(modules);

        new ModuleBuilder(tb, "M")

                .requires("N")

                .classes("package pack; public class C { publ.B b; }")

                .write(modSrc);

        String log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-p", modules.toString())

                .outdir(Files.createDirectories(base.resolve("classes")))

                .files(findJavaFiles(modSrc.resolve("M")))

                .run(Task.Expect.SUCCESS)

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.contains(""))

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

    }

    @Test

    public void testRequiresConflictExports(Path base) throws Exception {

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

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

        new ModuleBuilder(tb, "M")

                .exports("pack")

                .classes("package pack; public class A { }")

                .build(modules);

        new ModuleBuilder(tb, "N")

                .exports("pack")

                .classes("package pack; public class B { }")

                .build(modules);

        new ModuleBuilder(tb, "K")

                .requires("M")

                .requires("N")

                .classes("package pkg; public class C { pack.A a; pack.B b; }")

                .write(modSrc);

        List<String> log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-p", modules.toString())

                .outdir(Files.createDirectories(base.resolve("classes")))

                .files(findJavaFiles(modSrc.resolve("K")))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected =

                Arrays.asList("module-info.java:1:1: compiler.err.package.clash.from.requires: K, pack, M, N",

                        "1 error");

        if (!log.containsAll(expected))

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

    }

    @Test

    public void testQualifiedExportsToDifferentModules(Path base) throws Exception {

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

        new ModuleBuilder(tb, "U").write(modSrc);

        new ModuleBuilder(tb, "M")

                .exports("pkg to U")

                .classes("package pkg; public class A { public static boolean flagM; }")

                .write(modSrc);

        new ModuleBuilder(tb, "N")

                .exports("pkg to K")

                .classes("package pkg; public class A { public static boolean flagN; }")

                .write(modSrc);

        ModuleBuilder moduleK = new ModuleBuilder(tb, "K");

        moduleK.requires("M")

                .requires("N")

                .classes("package p; public class DependsOnN { boolean f = pkg.A.flagN; } ")

                .write(modSrc);

        new JavacTask(tb)

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

                .outdir(Files.createDirectories(base.resolve("classes")))

                .files(findJavaFiles(modSrc.resolve("K")))

                .run(Task.Expect.SUCCESS)

                .writeAll();

        //negative case

        moduleK.classes("package pkg; public class DuplicatePackage { } ")

                .classes("package p; public class DependsOnM { boolean f = pkg.A.flagM; } ")

                .write(modSrc);

        List<String> output = new JavacTask(tb)

                .options("-XDrawDiagnostics",

                        "--module-source-path", modSrc.toString())

                .outdir(Files.createDirectories(base.resolve("classes")))

                .files(findJavaFiles(modSrc.resolve("K")))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList(

                "DependsOnM.java:1:55: compiler.err.cant.resolve.location: kindname.variable, flagM, , , (compiler.misc.location: kindname.class, pkg.A, null)");

        if (!output.containsAll(expected)) {

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

        }

    }

}