Test that we can remove a range() value from a query. This also tests hook_query_TAG_alter().
function testAlterRemoveRange() {
$query = db_select('test');
$query
->addField('test', 'name');
$query
->addField('test', 'age', 'age');
$query
->range(0, 2);
$query
->addTag('database_test_alter_remove_range');
$num_records = count($query
->execute()
->fetchAll());
$this
->assertEqual($num_records, 4, 'Returned the correct number of rows.');
}