//-------------------------------------------------------------------------
public virtual void test_negate()
{
ObjIntPredicate <string> fn1 = (a, b) => b > 3;
ObjIntPredicate <string> negate = fn1.negate();
assertEquals(fn1.test("a", 2), false);
assertEquals(fn1.test("a", 4), true);
assertEquals(negate.test("a", 2), true);
assertEquals(negate.test("a", 4), false);
}
