"foo": *spec.StringProperty(),
					},
				},
			},
			assertions: []assertionFunc{
				toHaveFieldRef("spec.validations[1].expression"), // expressions[0] is okay, [1] is wrong
				toHaveLengthOf(1),
			},
		},
		{
			name:   "message expressions",
			policy: deploymentPolicyWithBadMessageExpression,
			schemaToReturn: &spec.Schema{
				SchemaProps: spec.SchemaProps{