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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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).
 *
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 * 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 8177552
 * @summary Checks the equals and hashCode method of CompactNumberFormat
 * @modules jdk.localedata
 */

import java.text.CompactNumberFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.util.Locale;

public class EqualityCheck {

    public static void main(String[] args) {
        testEquality();
        testHashCode();
        testEqualsAndHashCode();
    }

    private static void testEquality() {
        CompactNumberFormat cnf1 = (CompactNumberFormat) NumberFormat
                .getCompactNumberInstance(Locale.US, NumberFormat.Style.SHORT);

        CompactNumberFormat cnf2 = (CompactNumberFormat) NumberFormat
                .getCompactNumberInstance(Locale.US, NumberFormat.Style.SHORT);

        // taking a custom compact instance with the same state as
        // compact number instance of "en_US" locale with SHORT style
        CompactNumberFormat cnf3 = new CompactNumberFormat("#,##0.###",
                DecimalFormatSymbols.getInstance(Locale.US), new String[]{"", "",
                "", "0K", "00K", "000K", "0M", "00M", "000M", "0B", "00B", "000B",
                "0T", "00T", "000T"});

        // checking reflexivity
        if (!cnf1.equals(cnf1)) {
            throw new RuntimeException("[testEquality() reflexivity FAILED: The compared"
                    + " objects must be equal]");
        }

        if (!cnf1.equals(cnf2)) {
            throw new RuntimeException("[testEquality() FAILED: The compared"
                    + " objects must be equal]");
        }

        // checking symmetry, checking equality of two same objects
        if (!cnf1.equals(cnf2) || !cnf2.equals(cnf1)) {
            throw new RuntimeException("[testEquality() symmetry FAILED: The compared"
                    + " objects must be equal]");
        }

        // checking transitivity, three objects must be equal
        if (!cnf1.equals(cnf2) || !cnf2.equals(cnf3) || !cnf1.equals(cnf3)) {
            throw new RuntimeException("[testEquality() transitivity FAILED: The compared"
                    + " objects must be equal]");
        }

        // changing the min integer digits of first object; objects must not
        // be equal
        cnf1.setMinimumIntegerDigits(5);
        checkEquals(cnf1, cnf2, false);

        // changing the min integer digits of second object; objects must
        // be equal
        cnf2.setMinimumIntegerDigits(5);
        checkEquals(cnf1, cnf2, true);

        // changing the grouping size of first object; objects must not
        // be equal
        cnf1.setGroupingSize(4);
        checkEquals(cnf1, cnf2, false);

        // changing the grouping size if second object; objects must be equal
        cnf2.setGroupingSize(4);
        checkEquals(cnf1, cnf2, true);

        // changing the parseBigDecimal of first object; objects must not
        // be equal
        cnf1.setParseBigDecimal(true);
        checkEquals(cnf1, cnf2, false);

    }

    private static void checkEquals(CompactNumberFormat cnf1,
                                    CompactNumberFormat cnf2, boolean mustEqual) {
        if (cnf1.equals(cnf2) != mustEqual) {
            if (mustEqual) {
                throw new RuntimeException("[testEquality() FAILED: The compared"
                        + " objects must be equal]");
            } else {
                throw new RuntimeException("[testEquality() FAILED: The compared"
                        + " objects must not be equal]");
            }
        }
    }

    private static void testHashCode() {
        NumberFormat cnf1 = NumberFormat
                .getCompactNumberInstance(Locale.JAPAN, NumberFormat.Style.SHORT);
        NumberFormat cnf2 = NumberFormat
                .getCompactNumberInstance(Locale.JAPAN, NumberFormat.Style.SHORT);

        if (cnf1.hashCode() != cnf2.hashCode()) {
            throw new RuntimeException("[testHashCode() FAILED: hashCode of the"
                    + " compared objects must match]");
        }
    }

    // test the property of equals and hashCode i.e. two equal object must
    // always have the same hashCode
    private static void testEqualsAndHashCode() {
        NumberFormat cnf1 = NumberFormat
                .getCompactNumberInstance(new Locale("hi", "IN"), NumberFormat.Style.SHORT);
        cnf1.setMinimumIntegerDigits(5);
        NumberFormat cnf2 = NumberFormat
                .getCompactNumberInstance(new Locale("hi", "IN"), NumberFormat.Style.SHORT);
        cnf2.setMinimumIntegerDigits(5);
        if (cnf1.equals(cnf2)) {
            if (cnf1.hashCode() != cnf2.hashCode()) {
                throw new RuntimeException("[testEqualsAndHashCode() FAILED: two"
                        + " equal objects must have same hashCode]");
            }
        } else {
            throw new RuntimeException("[testEqualsAndHashCode() FAILED: The"
                    + " compared objects must be equal]");
        }
    }

}