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package org.apidesign.cloneproblem;

import java.util.Date;

import junit.framework.TestCase;

/** The test as would be written by the (not paranoiac) API author.

 *

 * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 */

public class IntervalTest extends TestCase {

    public IntervalTest(String testName) {

        super(testName);

    }

    // BEGIN: interval.test

    public void testOneSecondInterval() {

        Date now = new Date();

        Date later = new Date(now.getTime() + 1000);

        Interval interval = new Interval(now, later);

        assertEquals("1s", 1000, interval.getLength());

    }

    // END: interval.test

    public void testLaterCantBeSooner() {

        Date now = new Date();

        Date later = new Date(now.getTime() - 1000);

        try {

            Interval interval = new Interval(now, later);

            fail("Shall throw IllegalArgumentException");

        } catch (IllegalArgumentException ex) {

            // OK

        }

    }

    public void testDoesNotThrowNPEOnSecondArg() {

        Date now = new Date();

        try {

            Interval interval = new Interval(now, null);

            fail("Shall throw IllegalArgumentException");

        } catch (IllegalArgumentException ex) {

            // OK

        }

    }

    public void testDoesNotThrowNPEOnFirstArg() {

        Date now = new Date();

        try {

            Interval interval = new Interval(null, now);

            fail("Shall throw IllegalArgumentException");

        } catch (IllegalArgumentException ex) {

            // OK

        }

    }

}