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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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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 */

/*
 * @test
 * @bug 8765432
 * @summary Basic test for System.refreshEnv
 * @run testng/othervm/native RefreshEnv
 */

import java.util.Map;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import static org.testng.Assert.*;

public class RefreshEnv {
    static {
        System.loadLibrary("refreshEnv");
    }

    @DataProvider
    public Object[][] envVariables() throws Exception {
        return new Object[][] {
                new Object[] { "REFRESH_TEST_A", "LARRY" },
                new Object[] { "REFRESH_TEST_B", "moe" },
                new Object[] { "REFRESH_TEST_C", "cUrLy" },
                new Object[] { "XXZZYY",         "AABBCC" },
                new Object[] { "NO_VALUE",        "" }
        };
    }

    @Test(dataProvider = "envVariables")
    public void test(String name, String value) {
        Map<String,String> envs = System.getenv();

        assertEquals(envs.get(name), null);
        assertEquals(System.getenv(name), null);

        setenv(name, value);
        System.refreshEnv();

        assertEquals(envs.get(name), value);  // previous map reference
        assertEquals(System.getenv().get(name), value);
        assertEquals(System.getenv(name), value);

    }

    /** Sets, natively, the given environment variable with the given value. */
    static native int setenv(String name, String value);

}