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/*

 * @test

 * @bug 8175057

 * @summary Verify that having module-info on patch path works correctly.

 * @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

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

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

 * @run main ModuleInfoPatchPath

 */

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.List;

import toolbox.JavacTask;

import toolbox.Task.OutputKind;

public class ModuleInfoPatchPath extends ModuleTestBase {

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

        new ModuleInfoPatchPath().runTests();

    }

    @Test

    public void testModuleInfoToModulePath(Path base) throws Exception {

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

        tb.writeJavaFiles(src,

                          "module m { exports api; }",

                          "package api; public class Api {}");

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

        tb.writeJavaFiles(patch,

                          "module m { requires java.compiler; exports api; }",

                          "package api; public class Api { public static javax.lang.model.element.Element element; }");

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

        Path mClasses = classes.resolve("m");

        tb.createDirectories(mClasses);

        System.err.println("Building the vanilla module...");

        new JavacTask(tb)

            .outdir(mClasses)

            .files(findJavaFiles(src))

            .run()

            .writeAll();

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

        tb.writeJavaFiles(test,

                          "module test { requires m; }",

                          "package test; public class Test { private void test() { api.Api.element = null; } }");

        Path testClasses = classes.resolve("test");

        tb.createDirectories(testClasses);

        System.err.println("Building patched module...");

        new JavacTask(tb)

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

                     "--patch-module", "m=" + patch.toString())

            .outdir(testClasses)

            .files(findJavaFiles(test))

            .run()

            .writeAll();

        Path patchClasses = classes.resolve("patch");

        tb.createDirectories(patchClasses);

        System.err.println("Building patch...");

        new JavacTask(tb)

            .outdir(patchClasses)

            .files(findJavaFiles(patch))

            .run()

            .writeAll();

        tb.cleanDirectory(testClasses);

        Files.delete(patch.resolve("module-info.java"));

        Files.copy(patchClasses.resolve("module-info.class"), patch.resolve("module-info.class"));

        System.err.println("Building patched module against binary patch...");

        new JavacTask(tb)

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

                     "--patch-module", "m=" + patch.toString())

            .outdir(testClasses)

            .files(findJavaFiles(test))

            .run()

            .writeAll();

    }

    @Test

    public void testModuleInfoToSourcePath(Path base) throws Exception {

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

        tb.writeJavaFiles(src,

                          "module m { exports api; }",

                          "package api; public class Api {}",

                          "package test; public class Test { private void test() { api.Api.element = null; } }");

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

        tb.writeJavaFiles(patch,

                          "module m { requires java.compiler; exports api; }",

                          "package api; public class Api { public static javax.lang.model.element.Element element; }");

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

        Path mClasses = classes.resolve("m");

        tb.createDirectories(mClasses);

        System.err.println("Building patched module against source patch...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

                     "-sourcepath", src.toString())

            .outdir(mClasses)

            .files(findJavaFiles(src.resolve("test")))

            .run()

            .writeAll();

        //incremental compilation:

        List<String> log;

        System.err.println("Incremental building of patched module against source patch, no module-info...");

        log = new JavacTask(tb)

                .options("--patch-module", "m=" + patch.toString(),

                         "-sourcepath", src.toString(),

                         "-verbose")

                .outdir(mClasses)

                .files(findJavaFiles(src.resolve("test")))

                .run()

                .writeAll()

                .getOutputLines(OutputKind.DIRECT);

        if (log.stream().filter(line -> line.contains("[parsing started")).count() != 1) {

            throw new AssertionError("incorrect number of parsing events.");

        }

        System.err.println("Incremental building of patched module against source patch, with module-info...");

        log = new JavacTask(tb)

                .options("--patch-module", "m=" + patch.toString(),

                         "-sourcepath", src.toString(),

                         "-verbose")

                .outdir(mClasses)

                .files(findJavaFiles(patch.resolve("module-info.java"), src.resolve("test")))

                .run()

                .writeAll()

                .getOutputLines(OutputKind.DIRECT);

        if (log.stream().filter(line -> line.contains("[parsing started")).count() != 2) {

            throw new AssertionError("incorrect number of parsing events.");

        }

        tb.cleanDirectory(mClasses);

        System.err.println("Building patched module against source patch with source patch on patch path...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

                     "-sourcepath", src.toString())

            .outdir(mClasses)

            .files(findJavaFiles(src.resolve("test"), patch))

            .run()

            .writeAll();

        Path patchClasses = classes.resolve("patch");

        tb.createDirectories(patchClasses);

        System.err.println("Building patch...");

        new JavacTask(tb)

            .outdir(patchClasses)

            .files(findJavaFiles(patch))

            .run()

            .writeAll();

        tb.cleanDirectory(mClasses);

        Files.delete(patch.resolve("module-info.java"));

        Files.copy(patchClasses.resolve("module-info.class"), patch.resolve("module-info.class"));

        System.err.println("Building patched module against binary patch...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

                     "-sourcepath", src.toString())

            .outdir(mClasses)

            .files(findJavaFiles(src.resolve("test")))

            .run()

            .writeAll();

        tb.cleanDirectory(mClasses);

        System.err.println("Building patched module against binary patch with source patch on patch path...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

                     "-sourcepath", src.toString())

            .outdir(mClasses)

            .files(findJavaFiles(src.resolve("test"), patch))

            .run()

            .writeAll();

    }

    @Test

    public void testModuleInfoToModuleSourcePath(Path base) throws Exception {

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

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

        tb.writeJavaFiles(m,

                          "module m { exports api; }",

                          "package api; public class Api {}",

                          "package test; public class Test { private void test() { api.Api.element = null; } }");

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

        tb.writeJavaFiles(patch,

                          "module m { requires java.compiler; exports api; }",

                          "package api; public class Api { public static javax.lang.model.element.Element element; }");

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

        Path mClasses = classes.resolve("m");

        tb.createDirectories(mClasses);

        System.err.println("Building patched module against source patch...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

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

            .outdir(mClasses)

            .files(findJavaFiles(m.resolve("test")))

            .run()

            .writeAll();

        //incremental compilation:

        System.err.println("Incremental building of patched module against source patch...");

        List<String> log = new JavacTask(tb)

                .options("--patch-module", "m=" + patch.toString(),

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

                         "-verbose")

                .outdir(mClasses)

                .files(findJavaFiles(m.resolve("test")))

                .run()

                .writeAll()

                .getOutputLines(OutputKind.DIRECT);

        if (log.stream().filter(line -> line.contains("[parsing started")).count() != 1) {

            throw new AssertionError("incorrect number of parsing events.");

        }

        tb.cleanDirectory(mClasses);

        System.err.println("Building patched module against source patch with source patch on patch path...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

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

            .outdir(mClasses)

            .files(findJavaFiles(m.resolve("test"), patch))

            .run()

            .writeAll();

        Path patchClasses = classes.resolve("patch");

        tb.createDirectories(patchClasses);

        System.err.println("Building patch...");

        new JavacTask(tb)

            .outdir(patchClasses)

            .files(findJavaFiles(patch))

            .run()

            .writeAll();

        tb.cleanDirectory(mClasses);

        Files.delete(patch.resolve("module-info.java"));

        Files.copy(patchClasses.resolve("module-info.class"), patch.resolve("module-info.class"));

        System.err.println("Building patched module against binary patch...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

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

            .outdir(mClasses)

            .files(findJavaFiles(m.resolve("test")))

            .run()

            .writeAll();

        tb.cleanDirectory(mClasses);

        System.err.println("Building patched module against binary patch with source patch on patch path...");

        new JavacTask(tb)

            .options("--patch-module", "m=" + patch.toString(),

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

            .outdir(mClasses)

            .files(findJavaFiles(m.resolve("test"), patch))

            .run()

            .writeAll();

    }

}