Assert.assertEquals(Arrays.asList("dim1", "dim2"), index.getDimensions());
Assert.assertEquals(2, index.size());
final Iterator<Row> rows = index.iterator();
Row row = rows.next();
Assert.assertEquals(timestamp, row.getTimestampFromEpoch());
Assert.assertEquals(Arrays.asList("1"), row.getDimension("dim1"));
Assert.assertEquals(Arrays.asList("2"), row.getDimension("dim2"));
row = rows.next();
Assert.assertEquals(timestamp, row.getTimestampFromEpoch());
Assert.assertEquals(Arrays.asList("3"), row.getDimension("dim1"));
Assert.assertEquals(Arrays.asList("4"), row.getDimension("dim2"));
}