Assert.assertNull(pv.validate("asdadsa", "string"));
// Bad
Assert.assertNotNull(pv.validate("", "email"));
Assert.assertNotNull(pv.validate("hello", "email"));
Assert.assertNotNull(pv.validate("1234", "email"));
Assert.assertNotNull(pv.validate("", "identifier"));
Assert.assertNotNull(pv.validate("test@test.afdf", "identifier"));
Assert.assertNotNull(pv.validate("1234", "identifier"));
Assert.assertNotNull(pv.validate("", "integer"));
Assert.assertNotNull(pv.validate("hello", "integer"));
Assert.assertNotNull(pv.validate("test@test.afdf", "integer"));