@Test
    public void testSimple() {
        test = new DistributionTestFactory("simple");
        List<BucketId> buckets = getTestBuckets();
        Integer [] nodes = { 6, 3, 4, 8, 8, 8, 8, 8, 8, 3 };
        for (int i=0; i<buckets.size(); ++i) {
            BucketId bucket = buckets.get(i);
            DistributionTestFactory.Test t = test.recordResult(bucket).assertNodeCount(1);
            if (i < nodes.length) t.assertNodeUsed(nodes[i]);
        }
    }
Build a set of buckets to test that should represent the entire bucket space well.
vdslib/src/test/java/com/yahoo/vdslib/distribution/DistributionTestCase.java