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/*
 * @test
 * @bug 8369184
 * @summary Checks if equals()/hashCode() of SimpleTimeZone works correctly
 * @run junit SimpleTimeZoneEqualsHashCodeTest
 */

import java.util.SimpleTimeZone;
import static java.util.Calendar.MARCH;
import static java.util.Calendar.NOVEMBER;
import static java.util.Calendar.SUNDAY;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class SimpleTimeZoneEqualsHashCodeTest {
    private static final SimpleTimeZone STZ_WITH_DST =
        new SimpleTimeZone(-288_000_000, "America/Los_Angeles",
            MARCH, 8, -SUNDAY, 7_200_000,
            NOVEMBER, 1, -SUNDAY, 7_200_000);
    private static final SimpleTimeZone STZ_WITHOUT_DST =
        new SimpleTimeZone(0, "foo");

    @Test
    void withDSTTest() {
        var stz = (SimpleTimeZone)STZ_WITH_DST.clone();
        assertEquals(STZ_WITH_DST, stz);
        assertEquals(STZ_WITH_DST.hashCode(), stz.hashCode());

        stz.setEndRule(NOVEMBER, 8, -SUNDAY, 7_200_000);
        assertNotEquals(STZ_WITH_DST, stz);
        // From the contract point, hash codes may be the same.
        // This tests the implementation which considers DST
        // related fields for calculating the hash code.
        assertNotEquals(STZ_WITH_DST.hashCode(), stz.hashCode());
    }

    @Test
    void withoutDSTTest() {
        var stz = (SimpleTimeZone)STZ_WITHOUT_DST.clone();

        // Only setting start rule. Still considered non-DST zone
        stz.setStartRule(MARCH, 8, -SUNDAY, 7_200_000);
        assertTrue(!stz.useDaylightTime());
        assertEquals(STZ_WITHOUT_DST, stz);
        assertEquals(STZ_WITHOUT_DST.hashCode(), stz.hashCode());

        // Setting end rule as well. Now it is considered DST zone
        stz.setEndRule(NOVEMBER, 8, -SUNDAY, 7_200_000);
        assertTrue(stz.useDaylightTime());
        assertNotEquals(STZ_WITHOUT_DST, stz);
        // From the contract point, hash codes may be the same.
        // This tests the implementation which considers DST
        // related fields for calculating the hash code.
        assertNotEquals(STZ_WITHOUT_DST.hashCode(), stz.hashCode());
    }
}