/*

 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.nio.file.Path;

import java.util.ServiceLoader;

import java.util.function.Consumer;

import javax.tools.Tool;

import org.testng.annotations.BeforeMethod;

import org.testng.annotations.Test;

import static org.testng.Assert.assertTrue;

import static org.testng.Assert.fail;

/*

 * @test

 * @bug 8170044 8171343 8179856

 * @summary Test ServiceLoader launching of jshell tool

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

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

 *          jdk.jdeps/com.sun.tools.javap

 *          jdk.jshell/jdk.internal.jshell.tool

 * @library /tools/lib

 * @build Compiler toolbox.ToolBox

 * @run testng ToolProviderTest

 */

@Test

public class ToolProviderTest extends StartOptionTest {

    private ByteArrayOutputStream cmdout;

    private ByteArrayOutputStream cmderr;

    private InputStream cmdInStream;

    @BeforeMethod

    @Override

    public void setUp() {

        cmdout = new ByteArrayOutputStream();

        cmderr = new ByteArrayOutputStream();

        cmdInStream = new ByteArrayInputStream("/exit\n".getBytes());

    }

    @Override

    protected void start(Consumer<String> checkCmdOutput,

            Consumer<String> checkUserOutput, Consumer<String> checkError,

            String... args) throws Exception {

        if (runShellServiceLoader(args) != 0) {

            fail("Repl tool failed");

        }

        check(cmdout, checkCmdOutput, "cmdout");

        check(cmderr, checkError, "cmderr");

    }

    private int runShellServiceLoader(String... args) {

        ServiceLoader<Tool> sl = ServiceLoader.load(Tool.class);

        for (Tool provider : sl) {

            if (provider.name().equals("jshell")) {

                return provider.run(cmdInStream, cmdout, cmderr, args);

            }

        }

        throw new AssertionError("Repl tool not found by ServiceLoader: " + sl);

    }

    @Override

    public void testCommandFile() throws Exception {

        String fn = writeToFile("String str = \"Hello \"\n/list\nSystem.out.println(str + str)\n/exit\n");

        start("1 : String str = \"Hello \";" + "\n" + "Hello Hello", "", "--no-startup", fn, "-s");

    }

    @Override

    public void testShowVersion() throws Exception {

        start(

                s -> {

                    assertTrue(s.startsWith("jshell "), "unexpected version: " + s);

                    assertTrue(s.contains("Welcome"), "Expected start (but got no welcome): " + s);

                    assertTrue(s.trim().contains("jshell>"), "Expected prompt, got: " + s);

                },

                null, null,

                "--show-version");

    }

    /**

     * Test that input is read with "-" and there is no extra output.

     * @throws Exception

     */

    @Override

    public void testHypenFile() throws Exception {

        cmdInStream = new ByteArrayInputStream("System.out.print(\"Hello\");\n".getBytes());

        start("Hello", "", "-");

        cmdInStream = new ByteArrayInputStream("System.out.print(\"Hello\");\n".getBytes());

        start("Hello", "", "-", "-");

        Compiler compiler = new Compiler();

        Path path = compiler.getPath("markload.jsh");

        compiler.writeToFile(path, "System.out.print(\"===\");");

        cmdInStream = new ByteArrayInputStream("System.out.print(\"Hello\");\n".getBytes());

        start("===Hello===", "", path.toString(), "-", path.toString());

    }

}