@Test
public void testViewConstraints() {
DatasetRepository repo = DatasetRepositories.repositoryFor("repo:file:/tmp/data");
repo.delete("ns", "test");
repo.create("ns", "test", descriptor);
RefinableView<Record> v = Datasets.<Record, RefinableView<Record>>
load("view:file:/tmp/data/ns/test?username=user", Record.class);
Assert.assertNotNull("Should load view", v);