return errs, -1
		} else {
			rtCost := evalDetails.ActualCost()
			if rtCost == nil {
				errs = append(errs, field.Invalid(fldPath, sts.Type, fmt.Sprintf("runtime cost could not be calculated for validation rule: %v, no further validation rules will be run", ruleErrorString(rule))))

		t.Fatalf("%v", err)
	}
	_, details, err := prog.Eval(map[string]interface{}{"authorizer": NewAuthorizerVal(nil, alwaysAllowAuthorizer{})})
	if err != nil {
		t.Fatalf("%v", err)
	}
	cost := details.ActualCost()
	if *cost != expectRuntimeCost {
		t.Errorf("Expected cost of %d but got %d", expectRuntimeCost, *cost)
	}
}

func TestSize(t *testing.T) {
	exactSize := func(size int) checker.SizeEstimate {