/*

 * 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 8006334

 * @summary javap: JavapTask constructor breaks with null pointer exception if

 * parameter options is null

 */

import java.io.File;

import java.util.Arrays;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.util.List;

import java.util.Locale;

import javax.tools.Diagnostic;

import javax.tools.DiagnosticCollector;

import javax.tools.JavaFileManager;

import javax.tools.JavaFileObject;

import com.sun.tools.javap.JavapFileManager;

import com.sun.tools.javap.JavapTask;

public class JavapTaskCtorFailWithNPE {

    //we will also check the output just to confirm that we get the expected one

    private static final String expOutput =

        "Compiled from \"JavapTaskCtorFailWithNPE.java\"\n" +

        "public class JavapTaskCtorFailWithNPE {\n" +

        "  public JavapTaskCtorFailWithNPE();\n" +

        "  public static void main(java.lang.String[]);\n" +

        "}\n";

    public static void main(String[] args) {

        new JavapTaskCtorFailWithNPE().run();

    }

    private void run() {

        File classToCheck = new File(System.getProperty("test.classes"),

            getClass().getSimpleName() + ".class");

        DiagnosticCollector<JavaFileObject> dc =

                new DiagnosticCollector<JavaFileObject>();

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        JavaFileManager fm = JavapFileManager.create(dc, pw);

        JavapTask t = new JavapTask(pw, fm, dc, null,

                Arrays.asList(classToCheck.getPath()));

        if (t.run() != 0)

            throw new Error("javap failed unexpectedly");

        List<Diagnostic<? extends JavaFileObject>> diags = dc.getDiagnostics();

        for (Diagnostic<? extends JavaFileObject> d: diags) {

            if (d.getKind() == Diagnostic.Kind.ERROR)

                throw new AssertionError(d.getMessage(Locale.ENGLISH));

        }

        String lineSep = System.getProperty("line.separator");

        String out = sw.toString().replace(lineSep, "\n");

        if (!out.equals(expOutput)) {

            throw new AssertionError("The output is not equal to the one expected");

        }

    }

}