protected void lessTest(T a, T b) throws AssertionError {
        JunitCompat.assertTrue(a + " must be less than or equal to " + b, a.compareTo(b) <= 0);
    }
PartialOrderTester implements a partial order test for OrderTester

Usage: see {@link com.yahoo.test.TotalOrderTester}

@author Vegard Sjonfjell
testutil/src/main/java/com/yahoo/test/PartialOrderTester.java