firstBook.isbn = "2";
ValidationResult res = Validation.current().valid(firstBook);
assertFalse(res.ok);
assertNotNull(Validation.errors(".isbn"));
Error error = Validation.errors(".isbn").get(0);
assertEquals("Must be unique", error.message());
}
@Test
public void testMultiColumn() {
Author bob = Author.find("byName", "Bob").first();