result[f.Name] = f
		}
		return result
	}
	gvkType := apiservercel.NewObjectType("kubernetes.GroupVersionKind", fields(
		field("group", apiservercel.StringType, true),
		field("version", apiservercel.StringType, true),
		field("kind", apiservercel.StringType, true),
	))
	gvrType := apiservercel.NewObjectType("kubernetes.GroupVersionResource", fields(
		field("group", apiservercel.StringType, true),

	resourceAttributesType := buildResourceAttributesType(field, fields)
	nonResourceAttributesType := buildNonResourceAttributesType(field, fields)
	return apiservercel.NewObjectType("kubernetes.SubjectAccessReviewSpec", fields(
		field("resourceAttributes", resourceAttributesType, false),
		field("nonResourceAttributes", nonResourceAttributesType, false),
		field("user", apiservercel.StringType, false),

func (r *TypeRef) Field(name string) (*types.FieldType, bool) {
	return NewFieldType(name), true
}

// NewTypeRef creates a TypeRef by the given field name.
func NewTypeRef(name string) *TypeRef {
	objectType := types.NewObjectType(name, common.ObjectTraits)
	return &TypeRef{
		celObjectType: objectType,
		celTypeType:   types.NewTypeTypeWithParam(objectType),
	}

	"reflect"

	"github.com/google/cel-go/cel"
	"github.com/google/cel-go/checker/decls"
	"github.com/google/cel-go/common/types"
	"github.com/google/cel-go/common/types/ref"
)

var (
	FormatObject = decls.NewObjectType("kubernetes.NamedFormat")
	FormatType   = cel.ObjectType("kubernetes.NamedFormat")
)

// Format provdes a CEL representation of kubernetes format
type Format struct {
	Name         string

	"github.com/google/cel-go/common/types"
	"github.com/google/cel-go/common/types/ref"
)

// URL provides a CEL representation of a URL.
type URL struct {
	*url.URL
}

var (
	URLObject = decls.NewObjectType("kubernetes.URL")
	typeValue = types.NewTypeValue("kubernetes.URL")
	URLType   = cel.ObjectType("kubernetes.URL")
)

// ConvertToNative implements ref.Val.ConvertToNative.

	"github.com/google/cel-go/checker/decls"
	"github.com/google/cel-go/common/types"
	"github.com/google/cel-go/common/types/ref"
	"k8s.io/apimachinery/pkg/api/resource"
)

var (
	QuantityObject    = decls.NewObjectType("kubernetes.Quantity")
	quantityTypeValue = types.NewTypeValue("kubernetes.Quantity")
	QuantityType      = cel.ObjectType("kubernetes.Quantity")
)

// Quantity provdes a CEL representation of a resource.Quantity

	"time"

	"github.com/google/cel-go/common/types"
	"github.com/google/cel-go/common/types/ref"
	"github.com/google/cel-go/common/types/traits"
)

func TestConvertToType(t *testing.T) {
	objType := NewObjectType("TestObject", map[string]*DeclField{})
	tests := []struct {
		val interface{}
		typ ref.Type
	}{
		{true, types.BoolType},
		{float64(1.2), types.DoubleType},
		{int64(-42), types.IntType},

// contains any field.
type mockTypeRef struct {
	objectType *types.Type
	resolver   common.TypeResolver
}

func newMockTypeRef(resolver common.TypeResolver, name string) *mockTypeRef {
	objectType := types.NewObjectType(name, common.ObjectTraits)
	return &mockTypeRef{
		objectType: objectType,
		resolver:   resolver,
	}
}

func (m *mockTypeRef) HasTrait(trait int) bool {
	return common.ObjectTraits|trait != 0
}

		result := make(map[string]*apiservercel.DeclField, len(fields))
		for _, f := range fields {
			result[f.Name] = f
		}
		return result
	}

	return apiservercel.NewObjectType("kubernetes.UserInfo", fields(
		field("username", apiservercel.StringType, false),
		field("uid", apiservercel.StringType, false),
		field("groups", apiservercel.NewListType(apiservercel.StringType, -1), false),

	"k8s.io/apiserver/pkg/cel/library"
)

type envTypeAndVersion struct {
	version *version.Version
	envType Type
}

func TestBaseEnvironment(t *testing.T) {
	widgetsType := apiservercel.NewObjectType("Widget",
		map[string]*apiservercel.DeclField{
			"x": {
				Name: "x",
				Type: apiservercel.StringType,
			},
		})

	cases := []struct {
		name                    string