| // Copyright 2016 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package datastore |
| |
| import ( |
| "fmt" |
| "reflect" |
| "testing" |
| "time" |
| |
| "cloud.google.com/go/internal/testutil" |
| pb "google.golang.org/genproto/googleapis/datastore/v1" |
| ) |
| |
| type Simple struct { |
| I int64 |
| } |
| |
| type SimpleWithTag struct { |
| I int64 `datastore:"II"` |
| } |
| |
| type NestedSimpleWithTag struct { |
| A SimpleWithTag `datastore:"AA"` |
| } |
| |
| type NestedSliceOfSimple struct { |
| A []Simple |
| } |
| |
| type SimpleTwoFields struct { |
| S string |
| SS string |
| } |
| |
| type NestedSimpleAnonymous struct { |
| Simple |
| X string |
| } |
| |
| type NestedSimple struct { |
| A Simple |
| I int |
| } |
| |
| type NestedSimple1 struct { |
| A Simple |
| X string |
| } |
| |
| type NestedSimple2X struct { |
| AA NestedSimple |
| A SimpleTwoFields |
| S string |
| } |
| |
| type BDotB struct { |
| B string `datastore:"B.B"` |
| } |
| |
| type ABDotB struct { |
| A BDotB |
| } |
| |
| type MultiAnonymous struct { |
| Simple |
| SimpleTwoFields |
| X string |
| } |
| |
| func TestLoadEntityNestedLegacy(t *testing.T) { |
| testCases := []struct { |
| desc string |
| src *pb.Entity |
| want interface{} |
| }{ |
| { |
| desc: "nested", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "two"}}, |
| "A.I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 2}}, |
| }, |
| }, |
| want: &NestedSimple1{ |
| A: Simple{I: 2}, |
| X: "two", |
| }, |
| }, |
| { |
| desc: "nested with tag", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "AA.II": {ValueType: &pb.Value_IntegerValue{IntegerValue: 2}}, |
| }, |
| }, |
| want: &NestedSimpleWithTag{ |
| A: SimpleWithTag{I: 2}, |
| }, |
| }, |
| { |
| desc: "nested with anonymous struct field", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "two"}}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 2}}, |
| }, |
| }, |
| want: &NestedSimpleAnonymous{ |
| Simple: Simple{I: 2}, |
| X: "two", |
| }, |
| }, |
| { |
| desc: "nested with dotted field tag", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A.B.B": {ValueType: &pb.Value_StringValue{StringValue: "bb"}}, |
| }, |
| }, |
| want: &ABDotB{ |
| A: BDotB{ |
| B: "bb", |
| }, |
| }, |
| }, |
| { |
| desc: "nested with multiple anonymous fields", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 3}}, |
| "S": {ValueType: &pb.Value_StringValue{StringValue: "S"}}, |
| "SS": {ValueType: &pb.Value_StringValue{StringValue: "s"}}, |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "s"}}, |
| }, |
| }, |
| want: &MultiAnonymous{ |
| Simple: Simple{I: 3}, |
| SimpleTwoFields: SimpleTwoFields{S: "S", SS: "s"}, |
| X: "s", |
| }, |
| }, |
| } |
| |
| for _, tc := range testCases { |
| dst := reflect.New(reflect.TypeOf(tc.want).Elem()).Interface() |
| err := loadEntityProto(dst, tc.src) |
| if err != nil { |
| t.Errorf("loadEntityProto: %s: %v", tc.desc, err) |
| continue |
| } |
| |
| if !testutil.Equal(tc.want, dst) { |
| t.Errorf("%s: compare:\ngot: %#v\nwant: %#v", tc.desc, dst, tc.want) |
| } |
| } |
| } |
| |
| type WithKey struct { |
| X string |
| I int |
| K *Key `datastore:"__key__"` |
| } |
| |
| type NestedWithKey struct { |
| Y string |
| N WithKey |
| } |
| |
| var ( |
| incompleteKey = newKey("", nil) |
| invalidKey = newKey("s", incompleteKey) |
| ) |
| |
| func TestLoadEntityNested(t *testing.T) { |
| testCases := []struct { |
| desc string |
| src *pb.Entity |
| want interface{} |
| }{ |
| { |
| desc: "nested basic", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 3}}, |
| }, |
| }, |
| }}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 10}}, |
| }, |
| }, |
| want: &NestedSimple{ |
| A: Simple{I: 3}, |
| I: 10, |
| }, |
| }, |
| { |
| desc: "nested with struct tags", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "AA": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "II": {ValueType: &pb.Value_IntegerValue{IntegerValue: 1}}, |
| }, |
| }, |
| }}, |
| }, |
| }, |
| want: &NestedSimpleWithTag{ |
| A: SimpleWithTag{I: 1}, |
| }, |
| }, |
| { |
| desc: "nested 2x", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "AA": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 3}}, |
| }, |
| }, |
| }}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 1}}, |
| }, |
| }, |
| }}, |
| "A": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "S": {ValueType: &pb.Value_StringValue{StringValue: "S"}}, |
| "SS": {ValueType: &pb.Value_StringValue{StringValue: "s"}}, |
| }, |
| }, |
| }}, |
| "S": {ValueType: &pb.Value_StringValue{StringValue: "SS"}}, |
| }, |
| }, |
| want: &NestedSimple2X{ |
| AA: NestedSimple{ |
| A: Simple{I: 3}, |
| I: 1, |
| }, |
| A: SimpleTwoFields{S: "S", SS: "s"}, |
| S: "SS", |
| }, |
| }, |
| { |
| desc: "nested anonymous", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 3}}, |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "SomeX"}}, |
| }, |
| }, |
| want: &NestedSimpleAnonymous{ |
| Simple: Simple{I: 3}, |
| X: "SomeX", |
| }, |
| }, |
| { |
| desc: "nested simple with slice", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_ArrayValue{ |
| ArrayValue: &pb.ArrayValue{ |
| Values: []*pb.Value{ |
| {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 3}}, |
| }, |
| }, |
| }}, |
| {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 4}}, |
| }, |
| }, |
| }}, |
| }, |
| }, |
| }}, |
| }, |
| }, |
| |
| want: &NestedSliceOfSimple{ |
| A: []Simple{{I: 3}, {I: 4}}, |
| }, |
| }, |
| { |
| desc: "nested with multiple anonymous fields", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 3}}, |
| "S": {ValueType: &pb.Value_StringValue{StringValue: "S"}}, |
| "SS": {ValueType: &pb.Value_StringValue{StringValue: "s"}}, |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "ss"}}, |
| }, |
| }, |
| want: &MultiAnonymous{ |
| Simple: Simple{I: 3}, |
| SimpleTwoFields: SimpleTwoFields{S: "S", SS: "s"}, |
| X: "ss", |
| }, |
| }, |
| { |
| desc: "nested with dotted field tag", |
| src: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "B.B": {ValueType: &pb.Value_StringValue{StringValue: "bb"}}, |
| }, |
| }, |
| }}, |
| }, |
| }, |
| want: &ABDotB{ |
| A: BDotB{ |
| B: "bb", |
| }, |
| }, |
| }, |
| { |
| desc: "nested entity with key", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "Y": {ValueType: &pb.Value_StringValue{StringValue: "yyy"}}, |
| "N": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Key: keyToProto(testKey1a), |
| Properties: map[string]*pb.Value{ |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "two"}}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 2}}, |
| }, |
| }, |
| }}, |
| }, |
| }, |
| want: &NestedWithKey{ |
| Y: "yyy", |
| N: WithKey{ |
| X: "two", |
| I: 2, |
| K: testKey1a, |
| }, |
| }, |
| }, |
| { |
| desc: "nested entity with invalid key", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "Y": {ValueType: &pb.Value_StringValue{StringValue: "yyy"}}, |
| "N": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Key: keyToProto(invalidKey), |
| Properties: map[string]*pb.Value{ |
| "X": {ValueType: &pb.Value_StringValue{StringValue: "two"}}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 2}}, |
| }, |
| }, |
| }}, |
| }, |
| }, |
| want: &NestedWithKey{ |
| Y: "yyy", |
| N: WithKey{ |
| X: "two", |
| I: 2, |
| K: invalidKey, |
| }, |
| }, |
| }, |
| } |
| |
| for _, tc := range testCases { |
| dst := reflect.New(reflect.TypeOf(tc.want).Elem()).Interface() |
| err := loadEntityProto(dst, tc.src) |
| if err != nil { |
| t.Errorf("loadEntityProto: %s: %v", tc.desc, err) |
| continue |
| } |
| |
| if !testutil.Equal(tc.want, dst) { |
| t.Errorf("%s: compare:\ngot: %#v\nwant: %#v", tc.desc, dst, tc.want) |
| } |
| } |
| } |
| |
| type NestedStructPtrs struct { |
| *SimpleTwoFields |
| Nest *SimpleTwoFields |
| TwiceNest *NestedSimple2 |
| I int |
| } |
| |
| type NestedSimple2 struct { |
| A *Simple |
| I int |
| U interface{} |
| } |
| |
| type withTypedInterface struct { |
| Field fmt.Stringer |
| } |
| |
| type withUntypedInterface struct { |
| Field interface{} |
| } |
| |
| func TestLoadToInterface(t *testing.T) { |
| testCases := []struct { |
| name string |
| src *pb.Entity |
| dst interface{} |
| want interface{} |
| wantErr string |
| }{ |
| { |
| name: "Typed interface", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "Field": {ValueType: &pb.Value_StringValue{ |
| StringValue: "Foo", |
| }}, |
| }, |
| }, |
| dst: &withTypedInterface{}, |
| wantErr: `datastore: cannot load field "Field" into a "datastore.withTypedInterface": "string" is not assignable to "fmt.Stringer"`, |
| }, |
| { |
| name: "Untyped interface, fresh struct", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "Field": {ValueType: &pb.Value_StringValue{ |
| StringValue: "Foo", |
| }}, |
| }, |
| }, |
| dst: &withUntypedInterface{}, |
| want: &withUntypedInterface{Field: "Foo"}, |
| }, |
| { |
| name: "Untyped interface, already set", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "Field": {ValueType: &pb.Value_StringValue{ |
| StringValue: "Newly set", |
| }}, |
| }, |
| }, |
| dst: &withUntypedInterface{Field: 1e9}, |
| want: &withUntypedInterface{Field: "Newly set"}, |
| }, |
| } |
| |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| err := loadEntityProto(tc.dst, tc.src) |
| if tc.wantErr != "" { |
| if err == nil || err.Error() != tc.wantErr { |
| t.Fatalf("Error mismatch\nGot: %s\nWant: %s", err, tc.wantErr) |
| } |
| } else { |
| if err != nil { |
| t.Fatalf("loadEntityProto: %v", err) |
| } |
| if diff := testutil.Diff(tc.dst, tc.want); diff != "" { |
| t.Fatalf("Mismatch: got - want +\n%s", diff) |
| } |
| } |
| }) |
| } |
| } |
| |
| func TestAlreadyPopulatedDst(t *testing.T) { |
| testCases := []struct { |
| desc string |
| src *pb.Entity |
| dst interface{} |
| want interface{} |
| }{ |
| { |
| desc: "simple already populated, nil properties", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "I": {ValueType: &pb.Value_NullValue{}}, |
| }, |
| }, |
| dst: &Simple{ |
| I: 12, |
| }, |
| want: &Simple{}, |
| }, |
| { |
| desc: "nested structs already populated", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "SS": {ValueType: &pb.Value_StringValue{StringValue: "world"}}, |
| }, |
| }, |
| dst: &SimpleTwoFields{S: "hello" /* SS: "" */}, |
| want: &SimpleTwoFields{S: "hello", SS: "world"}, |
| }, |
| { |
| desc: "nested structs already populated, pValues nil", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "S": {ValueType: &pb.Value_NullValue{}}, |
| "SS": {ValueType: &pb.Value_StringValue{StringValue: "ss hello"}}, |
| "Nest": {ValueType: &pb.Value_NullValue{}}, |
| "TwiceNest": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_NullValue{}}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 2}}, |
| "U": {ValueType: &pb.Value_StringValue{StringValue: "replaced"}}, |
| }, |
| }, |
| }}, |
| "I": {ValueType: &pb.Value_IntegerValue{IntegerValue: 5}}, |
| }, |
| }, |
| dst: &NestedStructPtrs{ |
| &SimpleTwoFields{S: "hello" /* SS: "" */}, |
| &SimpleTwoFields{ /* S: "" */ SS: "twice hello"}, |
| &NestedSimple2{ |
| A: &Simple{I: 2}, |
| /* I: 0 */ |
| U: 1e9, |
| }, |
| 0, |
| }, |
| want: &NestedStructPtrs{ |
| &SimpleTwoFields{ /* S: "" */ SS: "ss hello"}, |
| nil, |
| &NestedSimple2{ |
| /* A: nil, */ |
| I: 2, |
| U: "replaced", |
| }, |
| 5, |
| }, |
| }, |
| } |
| |
| for _, tc := range testCases { |
| err := loadEntityProto(tc.dst, tc.src) |
| if err != nil { |
| t.Errorf("loadEntityProto: %s: %v", tc.desc, err) |
| continue |
| } |
| |
| if !testutil.Equal(tc.want, tc.dst) { |
| t.Errorf("%s: compare:\ngot: %#v\nwant: %#v", tc.desc, tc.dst, tc.want) |
| } |
| } |
| } |
| |
| type PLS0 struct { |
| A string |
| } |
| |
| func (p *PLS0) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| p.A = pp.Value.(string) |
| } |
| } |
| return nil |
| } |
| |
| func (p *PLS0) Save() (props []Property, err error) { |
| return []Property{{Name: "A", Value: p.A}}, nil |
| } |
| |
| type KeyLoader1 struct { |
| A string |
| K *Key |
| } |
| |
| func (kl *KeyLoader1) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| kl.A = pp.Value.(string) |
| } |
| } |
| return nil |
| } |
| |
| func (kl *KeyLoader1) Save() (props []Property, err error) { |
| return []Property{{Name: "A", Value: kl.A}}, nil |
| } |
| |
| func (kl *KeyLoader1) LoadKey(k *Key) error { |
| kl.K = k |
| return nil |
| } |
| |
| type KeyLoader2 struct { |
| B int |
| Key *Key |
| } |
| |
| func (kl *KeyLoader2) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "B" { |
| kl.B = int(pp.Value.(int64)) |
| } |
| } |
| return nil |
| } |
| |
| func (kl *KeyLoader2) Save() (props []Property, err error) { |
| return []Property{{Name: "B", Value: int64(kl.B)}}, nil |
| } |
| |
| func (kl *KeyLoader2) LoadKey(k *Key) error { |
| kl.Key = k |
| return nil |
| } |
| |
| type KeyLoader3 struct { |
| C bool |
| K *Key |
| } |
| |
| func (kl *KeyLoader3) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "C" { |
| kl.C = pp.Value.(bool) |
| } |
| } |
| return nil |
| } |
| |
| func (kl *KeyLoader3) Save() (props []Property, err error) { |
| return []Property{{Name: "C", Value: kl.C}}, nil |
| } |
| |
| func (kl *KeyLoader3) LoadKey(k *Key) error { |
| kl.K = k |
| return nil |
| } |
| |
| type KeyLoader4 struct { |
| PLS0 |
| K *Key |
| } |
| |
| func (kl *KeyLoader4) LoadKey(k *Key) error { |
| kl.K = k |
| return nil |
| } |
| |
| type PLS1 struct { |
| A string |
| } |
| |
| func (p *PLS1) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| p.A = pp.Value.(string) |
| } |
| } |
| return nil |
| } |
| |
| func (p *PLS1) Save() (props []Property, err error) { |
| return []Property{{Name: "A", Value: p.A}}, nil |
| } |
| |
| type KeyLoader6 struct { |
| A string |
| B string |
| K *Key |
| } |
| |
| func (kl *KeyLoader6) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| kl.A = pp.Value.(string) |
| } |
| } |
| return &ErrFieldMismatch{ |
| StructType: reflect.TypeOf(kl), |
| FieldName: "B", |
| Reason: "no value found", |
| } |
| } |
| |
| func (kl *KeyLoader6) LoadKey(k *Key) error { |
| kl.K = k |
| return nil |
| } |
| |
| func (kl *KeyLoader6) Save() (props []Property, err error) { |
| return []Property{{}}, nil |
| } |
| |
| type KeyLoader7 struct { |
| A string |
| K *Key |
| } |
| |
| func (kl *KeyLoader7) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| kl.A = pp.Value.(string) |
| } |
| } |
| return nil |
| } |
| |
| func (kl *KeyLoader7) LoadKey(k *Key) error { |
| return &ErrFieldMismatch{ |
| StructType: reflect.TypeOf(kl), |
| FieldName: "key", |
| Reason: "no value found", |
| } |
| } |
| |
| func (kl *KeyLoader7) Save() (props []Property, err error) { |
| return []Property{{}}, nil |
| } |
| |
| type KeyLoader8 struct { |
| A string |
| B string |
| K *Key |
| } |
| |
| type customLoadError struct{} |
| |
| func (e *customLoadError) Error() string { |
| return "custom load error" |
| } |
| |
| func (kl *KeyLoader8) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| kl.A = pp.Value.(string) |
| } |
| } |
| return &customLoadError{} |
| } |
| |
| func (kl *KeyLoader8) LoadKey(k *Key) error { |
| return &ErrFieldMismatch{ |
| StructType: reflect.TypeOf(kl), |
| FieldName: "key", |
| Reason: "no value found", |
| } |
| } |
| |
| func (kl *KeyLoader8) Save() (props []Property, err error) { |
| return []Property{{}}, nil |
| } |
| |
| type NotKeyLoader struct { |
| A string |
| K *Key |
| } |
| |
| func (p *NotKeyLoader) Load(props []Property) error { |
| for _, pp := range props { |
| if pp.Name == "A" { |
| p.A = pp.Value.(string) |
| } |
| } |
| return nil |
| } |
| |
| func (p *NotKeyLoader) Save() (props []Property, err error) { |
| return []Property{{Name: "A", Value: p.A}}, nil |
| } |
| |
| type NotPLSKeyLoader struct { |
| A string |
| K *Key `datastore:"__key__"` |
| } |
| |
| type NestedKeyLoaders struct { |
| Two *KeyLoader2 |
| Three []*KeyLoader3 |
| Four *KeyLoader4 |
| PLS *NotKeyLoader |
| } |
| |
| func TestKeyLoader(t *testing.T) { |
| testCases := []struct { |
| desc string |
| src *pb.Entity |
| dst interface{} |
| want interface{} |
| }{ |
| { |
| desc: "simple key loader", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "hello"}}, |
| }, |
| }, |
| dst: &KeyLoader1{}, |
| want: &KeyLoader1{ |
| A: "hello", |
| K: testKey0, |
| }, |
| }, |
| { |
| desc: "simple key loader with unmatched properties", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "hello"}}, |
| "B": {ValueType: &pb.Value_StringValue{StringValue: "unmatched"}}, |
| }, |
| }, |
| dst: &NotPLSKeyLoader{}, |
| want: &NotPLSKeyLoader{ |
| A: "hello", |
| K: testKey0, |
| }, |
| }, |
| { |
| desc: "embedded PLS key loader", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "hello"}}, |
| }, |
| }, |
| dst: &KeyLoader4{}, |
| want: &KeyLoader4{ |
| PLS0: PLS0{A: "hello"}, |
| K: testKey0, |
| }, |
| }, |
| { |
| desc: "nested key loaders", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "Two": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "B": {ValueType: &pb.Value_IntegerValue{IntegerValue: 12}}, |
| }, |
| Key: keyToProto(testKey1a), |
| }, |
| }}, |
| "Three": {ValueType: &pb.Value_ArrayValue{ |
| ArrayValue: &pb.ArrayValue{ |
| Values: []*pb.Value{ |
| {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "C": {ValueType: &pb.Value_BooleanValue{BooleanValue: true}}, |
| }, |
| Key: keyToProto(testKey1b), |
| }, |
| }}, |
| {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "C": {ValueType: &pb.Value_BooleanValue{BooleanValue: false}}, |
| }, |
| Key: keyToProto(testKey0), |
| }, |
| }}, |
| }, |
| }, |
| }}, |
| "Four": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "testing"}}, |
| }, |
| Key: keyToProto(testKey2a), |
| }, |
| }}, |
| "PLS": {ValueType: &pb.Value_EntityValue{ |
| EntityValue: &pb.Entity{ |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "something"}}, |
| }, |
| |
| Key: keyToProto(testKey1a), |
| }, |
| }}, |
| }, |
| }, |
| dst: &NestedKeyLoaders{}, |
| want: &NestedKeyLoaders{ |
| Two: &KeyLoader2{B: 12, Key: testKey1a}, |
| Three: []*KeyLoader3{ |
| { |
| C: true, |
| K: testKey1b, |
| }, |
| { |
| C: false, |
| K: testKey0, |
| }, |
| }, |
| Four: &KeyLoader4{ |
| PLS0: PLS0{A: "testing"}, |
| K: testKey2a, |
| }, |
| PLS: &NotKeyLoader{A: "something"}, |
| }, |
| }, |
| { |
| desc: "simple key loader with ErrFieldMismatch error", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "hello"}}, |
| }, |
| }, |
| dst: &KeyLoader6{}, |
| want: &KeyLoader6{ |
| A: "hello", |
| B: "", |
| K: testKey0, |
| }, |
| }, |
| { |
| desc: "simple key loader with ErrFieldMismatch during key load", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "hello"}}, |
| }, |
| }, |
| dst: &KeyLoader7{}, |
| want: &KeyLoader7{ |
| A: "hello", |
| K: nil, |
| }, |
| }, |
| { |
| desc: "simple key loader with other error during Load and ErrFieldMismatch during KeyLoad", |
| src: &pb.Entity{ |
| Key: keyToProto(testKey0), |
| Properties: map[string]*pb.Value{ |
| "A": {ValueType: &pb.Value_StringValue{StringValue: "hello"}}, |
| }, |
| }, |
| dst: &KeyLoader8{}, |
| want: &KeyLoader8{ |
| A: "hello", |
| B: "", |
| K: nil, |
| }, |
| }, |
| } |
| |
| for _, tc := range testCases { |
| err := loadEntityProto(tc.dst, tc.src) |
| if err != nil { |
| // While loadEntityProto may return an error, if that error is |
| // ErrFieldMismatch, then there is still data in tc.dst to compare. |
| if _, ok := err.(*ErrFieldMismatch); !ok { |
| t.Errorf("loadEntityProto: %s: %v", tc.desc, err) |
| continue |
| } |
| } |
| |
| if !testutil.Equal(tc.want, tc.dst) { |
| t.Errorf("%s: compare:\ngot: %+v\nwant: %+v", tc.desc, tc.dst, tc.want) |
| } |
| } |
| } |
| |
| func TestLoadPointers(t *testing.T) { |
| for _, test := range []struct { |
| desc string |
| in []Property |
| want Pointers |
| }{ |
| { |
| desc: "nil properties load as nil pointers", |
| in: []Property{ |
| {Name: "Pi", Value: nil}, |
| {Name: "Ps", Value: nil}, |
| {Name: "Pb", Value: nil}, |
| {Name: "Pf", Value: nil}, |
| {Name: "Pg", Value: nil}, |
| {Name: "Pt", Value: nil}, |
| }, |
| want: Pointers{}, |
| }, |
| { |
| desc: "missing properties load as nil pointers", |
| in: []Property(nil), |
| want: Pointers{}, |
| }, |
| { |
| desc: "non-nil properties load as the appropriate values", |
| in: []Property{ |
| {Name: "Pi", Value: int64(1)}, |
| {Name: "Ps", Value: "x"}, |
| {Name: "Pb", Value: true}, |
| {Name: "Pf", Value: 3.14}, |
| {Name: "Pg", Value: GeoPoint{Lat: 1, Lng: 2}}, |
| {Name: "Pt", Value: time.Unix(100, 0)}, |
| }, |
| want: func() Pointers { |
| p := populatedPointers() |
| *p.Pi = 1 |
| *p.Ps = "x" |
| *p.Pb = true |
| *p.Pf = 3.14 |
| *p.Pg = GeoPoint{Lat: 1, Lng: 2} |
| *p.Pt = time.Unix(100, 0) |
| return *p |
| }(), |
| }, |
| } { |
| var got Pointers |
| if err := LoadStruct(&got, test.in); err != nil { |
| t.Fatalf("%s: %v", test.desc, err) |
| } |
| if !testutil.Equal(got, test.want) { |
| t.Errorf("%s:\ngot %+v\nwant %+v", test.desc, got, test.want) |
| } |
| } |
| } |
| |
| func TestLoadNonArrayIntoSlice(t *testing.T) { |
| // Loading a non-array value into a slice field results in a slice of size 1. |
| var got struct{ S []string } |
| if err := LoadStruct(&got, []Property{{Name: "S", Value: "x"}}); err != nil { |
| t.Fatal(err) |
| } |
| if want := []string{"x"}; !testutil.Equal(got.S, want) { |
| t.Errorf("got %#v, want %#v", got.S, want) |
| } |
| } |
| |
| func TestLoadEmptyArrayIntoSlice(t *testing.T) { |
| // Loading an empty array into a slice field is a no-op. |
| var got = struct{ S []string }{[]string{"x"}} |
| if err := LoadStruct(&got, []Property{{Name: "S", Value: []interface{}{}}}); err != nil { |
| t.Fatal(err) |
| } |
| if want := []string{"x"}; !testutil.Equal(got.S, want) { |
| t.Errorf("got %#v, want %#v", got.S, want) |
| } |
| } |
| |
| func TestLoadNull(t *testing.T) { |
| // Loading a Datastore Null into a basic type (int, float, etc.) results in a zero value. |
| // Loading a Null into a slice of basic type results in a slice of size 1 containing the zero value. |
| // (As expected from the behavior of slices and nulls with basic types.) |
| type S struct { |
| I int64 |
| F float64 |
| S string |
| B bool |
| A []string |
| } |
| got := S{ |
| I: 1, |
| F: 1.0, |
| S: "1", |
| B: true, |
| A: []string{"X"}, |
| } |
| want := S{A: []string{""}} |
| props := []Property{{Name: "I"}, {Name: "F"}, {Name: "S"}, {Name: "B"}, {Name: "A"}} |
| if err := LoadStruct(&got, props); err != nil { |
| t.Fatal(err) |
| } |
| if !testutil.Equal(got, want) { |
| t.Errorf("got %+v, want %+v", got, want) |
| } |
| |
| // Loading a Null into a pointer to struct field results in a nil field. |
| got2 := struct{ X *S }{X: &S{}} |
| if err := LoadStruct(&got2, []Property{{Name: "X"}}); err != nil { |
| t.Fatal(err) |
| } |
| if got2.X != nil { |
| t.Errorf("got %v, want nil", got2.X) |
| } |
| |
| // Loading a Null into a struct field is an error. |
| got3 := struct{ X S }{} |
| err := LoadStruct(&got3, []Property{{Name: "X"}}) |
| if err == nil { |
| t.Error("got nil, want error") |
| } |
| } |
| |
| // var got2 struct{ S []Pet } |
| // if err := LoadStruct(&got2, []Property{{Name: "S", Value: nil}}); err != nil { |
| // t.Fatal(err) |
| // } |
| |
| // } |