public void testContent() throws InvalidArgumentException {
ResultSet result = new ResultSet();
result.setColumnNames(Arrays.asList("count", "a", "b"));
result.addRow(Arrays.asList("1", "a1", "b1"));
result.addRow(Arrays.asList("2", "a2", "b2"));
result.addRow(Arrays.asList("3", "a3", "b3"));
List<String> colResults = result.getColResults("count");
assert (colResults.size() == 3);
for (int i = 0; i < colResults.size(); i ++) {