test/javax/script/StringWriterPrintTest.java

/*
 * Copyright (c) 2011, 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.
 *
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 * questions.
 */

/*
 * @test
 * @bug 6759414
 * @summary javascript engine can not write to StringWriter.
 */

import javax.script.*;
import java.io.*;

public class StringWriterPrintTest {
    public static void main(String[] args) throws ScriptException {
        ScriptEngineManager sem = new ScriptEngineManager();
        ScriptEngine engine = sem.getEngineByName("nashorn");
        if (engine == null) {
            System.out.println("Warning: No nashorn engine found; test vacuously passes.");
            return;
        }
        StringWriter sw = new StringWriter();
        engine.eval("print(\"hello world 1\\n\")");
        engine.getContext().setWriter(sw);
        // the following "print" call throws exception
        engine.eval("print(\"hello world 2\\n\")");
        System.out.println(sw.toString());
    }
};