/*
 * Copyright (c) 2010, The Broad Institute
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

package org.broadinstitute.sting.jna.clibrary;

import com.sun.jna.NativeLong;
import com.sun.jna.ptr.NativeLongByReference;
import org.broadinstitute.sting.BaseTest;
import org.testng.Assert;
import org.testng.annotations.Test;

public class LibCUnitTest extends BaseTest {

    @Test
    public void testEnvironment() {
        String testProperty = "test_property";
        String testValue = "value";
        Assert.assertEquals(LibC.getenv(testProperty), null);
        Assert.assertEquals(LibC.setenv(testProperty, testValue, 1), 0);
        Assert.assertEquals(LibC.getenv(testProperty), testValue);
        Assert.assertEquals(LibC.unsetenv(testProperty), 0);
        Assert.assertEquals(LibC.getenv(testProperty), null);
    }

    @Test
    public void testDifftime() throws Exception {
        // Pointer to hold the times
        NativeLongByReference ref = new NativeLongByReference();

        // time() returns -1 on error.
        NativeLong err = new NativeLong(-1L);

        LibC.time(ref);
        NativeLong time0 = ref.getValue();
        Assert.assertNotSame(time0, err, "Time 0 returned an error (-1).");

        Thread.sleep(5000L);

        LibC.time(ref);
        NativeLong time1 = ref.getValue();
        Assert.assertNotSame(time1, err, "Time 1 returned an error (-1).");

        Assert.assertNotSame(time1, time0, "Time 1 returned same time as Time 0.");

        double diff = LibC.difftime(time1, time0);
        Assert.assertTrue(diff >= 5, "Time difference was not greater than 5 seconds: " + diff);
    }
}