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/* @test

   @bug 8058473

   @summary "Comparison method violates its general contract" when using Clipboard

            Ensure that DataFlavorComparator conforms to Comparator contract

   @author Anton Nashatyrev

   @run main DataFlavorComparatorTest1

*/

import sun.datatransfer.DataFlavorUtil;

import java.awt.datatransfer.DataFlavor;

import java.util.Comparator;

public class DataFlavorComparatorTest1 {

    public static void main(String[] args) throws Exception {

        String[] mimes = new String[] {

                "text/plain",

                "text/plain; charset=unicode",

                "text/plain; charset=cp1251",

                "text/plain; charset=unicode; class=java.io.InputStream",

                "text/plain; charset=unicode; class=java.io.Serializable",

                "text/plain; charset=unicode; class=java.lang.Object",

                "text/plain; class=java.lang.String",

                "text/plain; class=java.io.Reader",

                "text/plain; class=java.lang.Object",

                "text/html",

                "text/html; charset=unicode",

                "text/html; charset=cp1251",

                "text/html; charset=unicode; class=java.io.InputStream",

                "text/html; charset=unicode; class=java.io.Serializable",

                "text/html; charset=unicode; class=java.lang.Object",

                "text/html; class=java.lang.String",

                "text/html; class=java.io.Reader",

                "text/html; class=java.lang.Object",

                "text/unknown",

                "text/unknown; charset=unicode",

                "text/unknown; charset=cp1251",

                "text/unknown; charset=unicode; class=java.io.InputStream",

                "text/unknown; charset=unicode; class=java.io.Serializable",

                "text/unknown; charset=unicode; class=java.lang.Object",

                "text/unknown; class=java.lang.String",

                "text/unknown; class=java.io.Reader",

                "text/unknown; class=java.lang.Object",

                "application/unknown; class=java.io.InputStream",

                "application/unknown; class=java.lang.Object",

                "application/unknown",

                "application/x-java-jvm-local-objectref; class=java.io.InputStream",

                "application/x-java-jvm-local-objectref; class=java.lang.Object",

                "application/x-java-jvm-local-objectref",

                "unknown/flavor",

                "unknown/flavor; class=java.io.InputStream",

                "unknown/flavor; class=java.lang.Object",

        };

        DataFlavor[] flavors = new DataFlavor[mimes.length];

        for (int i = 0; i < flavors.length; i++) {

            flavors[i] = new DataFlavor(mimes[i]);

        }

        testComparator(DataFlavorUtil.getDataFlavorComparator(), flavors);

        System.out.println("Passed.");

    }

    private static void testComparator(Comparator cmp, DataFlavor[] flavs)

            throws ClassNotFoundException {

        for (DataFlavor x: flavs) {

            for (DataFlavor y: flavs) {

                if (Math.signum(cmp.compare(x,y)) != -Math.signum(cmp.compare(y,x))) {

                    throw new RuntimeException("Antisymmetry violated: " + x + ", " + y);

                }

                if (cmp.compare(x,y) == 0 && !x.equals(y)) {

                    throw new RuntimeException("Equals rule violated: " + x + ", " + y);

                }

                for (DataFlavor z: flavs) {

                    if (cmp.compare(x,y) == 0) {

                        if (Math.signum(cmp.compare(x, z)) != Math.signum(cmp.compare(y, z))) {

                            throw new RuntimeException("Transitivity (1) violated: " + x + ", " + y + ", " + z);

                        }

                    } else {

                        if (Math.signum(cmp.compare(x, y)) == Math.signum(cmp.compare(y, z))) {

                            if (Math.signum(cmp.compare(x, y)) != Math.signum(cmp.compare(x, z))) {

                                throw new RuntimeException("Transitivity (2) violated: " + x + ", " + y + ", " + z);

                            }

                        }

                    }

                }

            }

        }

    }

}