/*

 * Copyright (c) 2016, 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.

 */

/*

 * @test

 * @bug 8159855

 * @summary test javadoc's ToolProvider

 * @library /tools/lib

 * @build toolbox.TestRunner toolbox.ToolBox

 * @run main ToolProviderTest

 */

import java.io.*;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.*;

import java.util.spi.ToolProvider;

import toolbox.TestRunner;

import toolbox.ToolBox;

public class ToolProviderTest extends TestRunner {

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

        new ToolProviderTest().runTests();

    }

    ToolBox tb = new ToolBox();

    ToolProvider javadoc;

    ToolProviderTest() {

        super(System.err);

        javadoc = ToolProvider.findFirst("javadoc").get();

    }

    @Test

    public void testProviders() throws Exception {

        Map<String, ToolProvider> providers = new LinkedHashMap<>();

        for (ToolProvider tp : ServiceLoader.load(ToolProvider.class,

                ClassLoader.getSystemClassLoader())) {

            System.out.println("Provider: " + tp.name() + ": " + tp.getClass().getName());

            providers.put(tp.name(), tp);

        }

        if (!providers.containsKey("javadoc")) {

            error("javadoc ToolProvider not found");

        }

    }

    @Test

    public void testOneStream() throws Exception {

        StringWriter sw = new StringWriter();

        try (PrintWriter pw = new PrintWriter(sw)) {

            int rc = javadoc.run(pw, pw, "-help");

            if (rc != 0) {

                error("unexpected exit code: " + rc);

            }

        }

        String out = sw.toString();

        if (!out.contains("Usage:")) {

            error("expected output not found");

        }

    }

    @Test

    public void testTwoStreamsOut() throws Exception {

        StringWriter swOut = new StringWriter();

        StringWriter swErr = new StringWriter();

        try (PrintWriter pwOut = new PrintWriter(swOut);

                PrintWriter pwErr = new PrintWriter(swErr)) {

            int rc = javadoc.run(pwOut, pwErr, "-help");

            if (rc != 0) {

                error("unexpected exit code: " + rc);

            }

        }

        String out = swOut.toString();

        String err = swErr.toString();

        if (!out.contains("Usage:")) {

            error("stdout: expected output not found");

        }

        if (!err.isEmpty()) {

            error("stderr: unexpected output");

        }

    }

    @Test

    public void testTwoStreamsErr() throws Exception {

        Path src = Paths.get("src");

        Path classes = Paths.get("classes");

        tb.writeJavaFiles(src,

            "import java.util.*; class C { # }");

        StringWriter swOut = new StringWriter();

        StringWriter swErr = new StringWriter();

        try (PrintWriter pwOut = new PrintWriter(swOut);

                PrintWriter pwErr = new PrintWriter(swErr)) {

            int rc = javadoc.run(pwOut, pwErr,

                "-d", classes.toString(),

                src.resolve("C.java").toString());

            if (rc != 1) {

                error("unexpected exit code: " + rc);

            }

        }

        String out = swOut.toString();

        String err = swErr.toString();

        if (!out.contains("Loading")) {

            error("stdout: unexpected output");

        }

        if (!err.contains("illegal character")) {

            error("stderr: expected output not found");

        }

    }

}