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/**

 * @test

 * @bug 8145013

 * @summary Javac doesn't report warnings/errors if module provides unexported service and doesn't use it itself

 * @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 ServiceProvidedButNotExportedOrUsedTest

 */

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.Arrays;

import java.util.List;

import toolbox.JavacTask;

import toolbox.Task;

import toolbox.ToolBox;

public class ServiceProvidedButNotExportedOrUsedTest extends ModuleTestBase {

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

        ServiceProvidedButNotExportedOrUsedTest t = new ServiceProvidedButNotExportedOrUsedTest();

        t.runTests();

    }

    @Test

    public void testWarning(Path base) throws Exception {

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

        tb.writeJavaFiles(src,

                "module m { provides p1.C1 with p2.C2; }",

                "package p1; public class C1 { }",

                "package p2; public class C2 extends p1.C1 { }");

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

        Files.createDirectories(classes);

        List<String> output = new JavacTask(tb)

                .outdir(classes)

                .options("-Werror", "-XDrawDiagnostics")

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList(

                "module-info.java:1:12: compiler.warn.service.provided.but.not.exported.or.used: p1.C1",

                "- compiler.err.warnings.and.werror",

                "1 error",

                "1 warning");

        if (!output.containsAll(expected)) {

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

        }

    }

    @Test

    public void testImplementationMustBeInSameModuleAsProvidesDirective(Path base) throws Exception {

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

        tb.writeJavaFiles(src.resolve("m1x"),

                "module m1x { exports p1; }",

                "package p1; public class C1 { }");

        tb.writeJavaFiles(src.resolve("m2x"),

                "module m2x { requires m1x; requires m3x; provides p1.C1 with p2.C2; }");

        tb.writeJavaFiles(src.resolve("m3x"),

                "module m3x { requires m1x; exports p2; }",

                "package p2; public class C2 extends p1.C1 { }");

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

        Files.createDirectories(modules);

        List<String> output = new JavacTask(tb)

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

                .outdir(modules)

                .files(findJavaFiles(src))

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        List<String> expected = Arrays.asList(

                "module-info.java:1:42: compiler.err.service.implementation.not.in.right.module: m3x",

                "1 error");

        if (!output.containsAll(expected)) {

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

        }

    }

}