/*

 * Copyright (c) 2018, Google Inc. 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 8179373

 * @summary javac -verbose logs the class path multiple times

 * @modules jdk.compiler

 * @run main VerboseClassPathTest

 */

import java.io.BufferedReader;

import java.io.PrintWriter;

import java.io.StringReader;

import java.io.StringWriter;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.spi.ToolProvider;

public class VerboseClassPathTest {

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

        new VerboseClassPathTest().run();

    }

    void run() throws Exception {

        String className = getClass().getName();

        Path testSrc = Paths.get(System.getProperty("test.src"));

        Path file = testSrc.resolve(className + ".java");

        ToolProvider javac = ToolProvider.findFirst("javac").orElseThrow();

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw, true);

        int rc =

                javac.run(

                        pw,

                        pw,

                        "-d",

                        ",",

                        "-source",

                        "8",

                        "-target",

                        "8",

                        "-verbose",

                        file.toString());

        String log = sw.toString();

        System.out.println(log);

        if (rc != 0) {

            throw new Exception("compilation failed: rc=" + rc);

        }

        String expect = "[search path for class files:";

        long count =

                new BufferedReader(new StringReader(log))

                        .lines()

                        .filter(line -> line.startsWith(expect))

                        .count();

        if (count != 1) {

            throw new Exception("expected '" + expect + "' to appear once, actual: " + count);

        }

    }

}