Code example for Predicate

Methods: hashCode

        assertNotEquals(predicate, duplicate);
        assertNotEquals(duplicate, predicate);
    @Test public void hashCodeBasedOnIdentity() {
        assertEquals(System.identityHashCode(predicate), predicate.hashCode());
    @Test public void toStringGivesAnIndicationOfItsRandomGeneration() {
        assertEquals("a randomly generated instance of " + Predicate.class, predicate.toString());
    @Test public void rejectsNonFunctionalInterface() {
        thrown.expectMessage(Cloneable.class + " is not a functional interface");
        makeLambda(Cloneable.class, new TestIntegerGenerator(), null); 
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