gorm/preload_test.go

648 lines
13 KiB
Go

package gorm_test
import (
"encoding/json"
"reflect"
"testing"
)
func getPreloadUser(name string) *User {
return getPreparedUser(name, "Preload")
}
func checkUserHasPreloadData(user User, t *testing.T) {
u := getPreloadUser(user.Name)
if user.BillingAddress.Address1 != u.BillingAddress.Address1 {
t.Error("Failed to preload user's BillingAddress")
}
if user.ShippingAddress.Address1 != u.ShippingAddress.Address1 {
t.Error("Failed to preload user's ShippingAddress")
}
if user.CreditCard.Number != u.CreditCard.Number {
t.Error("Failed to preload user's CreditCard")
}
if user.Company.Name != u.Company.Name {
t.Error("Failed to preload user's Company")
}
if len(user.Emails) != len(u.Emails) {
t.Error("Failed to preload user's Emails")
} else {
var found int
for _, e1 := range u.Emails {
for _, e2 := range user.Emails {
if e1.Email == e2.Email {
found++
break
}
}
}
if found != len(u.Emails) {
t.Error("Failed to preload user's email details")
}
}
}
func TestPreload(t *testing.T) {
user1 := getPreloadUser("user1")
DB.Save(user1)
preloadDB := DB.Where("role = ?", "Preload").Preload("BillingAddress").Preload("ShippingAddress").
Preload("CreditCard").Preload("Emails").Preload("Company")
var user User
preloadDB.Find(&user)
checkUserHasPreloadData(user, t)
user2 := getPreloadUser("user2")
DB.Save(user2)
user3 := getPreloadUser("user3")
DB.Save(user3)
var users []User
preloadDB.Find(&users)
for _, user := range users {
checkUserHasPreloadData(user, t)
}
var users2 []*User
preloadDB.Find(&users2)
for _, user := range users2 {
checkUserHasPreloadData(*user, t)
}
var users3 []*User
preloadDB.Preload("Emails", "email = ?", user3.Emails[0].Email).Find(&users3)
for _, user := range users3 {
if user.Name == user3.Name {
if len(user.Emails) != 1 {
t.Errorf("should only preload one emails for user3 when with condition")
}
} else if len(user.Emails) != 0 {
t.Errorf("should not preload any emails for other users when with condition")
}
}
}
func TestNestedPreload1(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1 Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2 Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := Level3{Level2: Level2{Level1: Level1{Value: "value"}}}
if err := DB.Create(&want).Error; err != nil {
panic(err)
}
var got Level3
if err := DB.Preload("Level2").Preload("Level2.Level1").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload2(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1s []*Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2s []Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := Level3{
Level2s: []Level2{
{
Level1s: []*Level1{
&Level1{Value: "value1"},
&Level1{Value: "value2"},
},
},
{
Level1s: []*Level1{
&Level1{Value: "value3"},
},
},
},
}
if err := DB.Create(&want).Error; err != nil {
panic(err)
}
var got Level3
if err := DB.Preload("Level2s.Level1s").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload3(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1 Level1
Level3ID uint
}
Level3 struct {
Name string
ID uint
Level2s []Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := Level3{
Level2s: []Level2{
{Level1: Level1{Value: "value1"}},
{Level1: Level1{Value: "value2"}},
},
}
if err := DB.Create(&want).Error; err != nil {
panic(err)
}
var got Level3
if err := DB.Preload("Level2s.Level1").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload4(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1s []Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2 Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := Level3{
Level2: Level2{
Level1s: []Level1{
Level1{Value: "value1"},
Level1{Value: "value2"},
},
},
}
if err := DB.Create(&want).Error; err != nil {
panic(err)
}
var got Level3
if err := DB.Preload("Level2.Level1s").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
// Slice: []Level3
func TestNestedPreload5(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1 Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2 Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := make([]Level3, 2)
want[0] = Level3{Level2: Level2{Level1: Level1{Value: "value"}}}
if err := DB.Create(&want[0]).Error; err != nil {
panic(err)
}
want[1] = Level3{Level2: Level2{Level1: Level1{Value: "value2"}}}
if err := DB.Create(&want[1]).Error; err != nil {
panic(err)
}
var got []Level3
if err := DB.Preload("Level2").Preload("Level2.Level1").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload6(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1s []Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2s []Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := make([]Level3, 2)
want[0] = Level3{
Level2s: []Level2{
{
Level1s: []Level1{
{Value: "value1"},
{Value: "value2"},
},
},
{
Level1s: []Level1{
{Value: "value3"},
},
},
},
}
if err := DB.Create(&want[0]).Error; err != nil {
panic(err)
}
want[1] = Level3{
Level2s: []Level2{
{
Level1s: []Level1{
{Value: "value3"},
{Value: "value4"},
},
},
{
Level1s: []Level1{
{Value: "value5"},
},
},
},
}
if err := DB.Create(&want[1]).Error; err != nil {
panic(err)
}
var got []Level3
if err := DB.Preload("Level2s.Level1s").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload7(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1 Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2s []Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := make([]Level3, 2)
want[0] = Level3{
Level2s: []Level2{
{Level1: Level1{Value: "value1"}},
{Level1: Level1{Value: "value2"}},
},
}
if err := DB.Create(&want[0]).Error; err != nil {
panic(err)
}
want[1] = Level3{
Level2s: []Level2{
{Level1: Level1{Value: "value3"}},
{Level1: Level1{Value: "value4"}},
},
}
if err := DB.Create(&want[1]).Error; err != nil {
panic(err)
}
var got []Level3
if err := DB.Preload("Level2s.Level1").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload8(t *testing.T) {
type (
Level1 struct {
ID uint
Value string
Level2ID uint
}
Level2 struct {
ID uint
Level1s []Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2 Level2
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := make([]Level3, 2)
want[0] = Level3{
Level2: Level2{
Level1s: []Level1{
Level1{Value: "value1"},
Level1{Value: "value2"},
},
},
}
if err := DB.Create(&want[0]).Error; err != nil {
panic(err)
}
want[1] = Level3{
Level2: Level2{
Level1s: []Level1{
Level1{Value: "value3"},
Level1{Value: "value4"},
},
},
}
if err := DB.Create(&want[1]).Error; err != nil {
panic(err)
}
var got []Level3
if err := DB.Preload("Level2.Level1s").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestNestedPreload9(t *testing.T) {
type (
Level0 struct {
ID uint
Value string
Level1ID uint
}
Level1 struct {
ID uint
Value string
Level2ID uint
Level2_1ID uint
Level0s []Level0
}
Level2 struct {
ID uint
Level1s []Level1
Level3ID uint
}
Level2_1 struct {
ID uint
Level1s []Level1
Level3ID uint
}
Level3 struct {
ID uint
Name string
Level2 Level2
Level2_1 Level2_1
}
)
DB.DropTableIfExists(&Level3{})
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level2_1{})
DB.DropTableIfExists(&Level1{})
DB.DropTableIfExists(&Level0{})
if err := DB.AutoMigrate(&Level3{}, &Level2{}, &Level1{}, &Level2_1{}, &Level0{}).Error; err != nil {
panic(err)
}
want := make([]Level3, 2)
want[0] = Level3{
Level2: Level2{
Level1s: []Level1{
Level1{Value: "value1"},
Level1{Value: "value2"},
},
},
Level2_1: Level2_1{
Level1s: []Level1{
Level1{
Value: "value1-1",
Level0s: []Level0{{Value: "Level0-1"}},
},
Level1{
Value: "value2-2",
Level0s: []Level0{{Value: "Level0-2"}},
},
},
},
}
if err := DB.Create(&want[0]).Error; err != nil {
panic(err)
}
want[1] = Level3{
Level2: Level2{
Level1s: []Level1{
Level1{Value: "value3"},
Level1{Value: "value4"},
},
},
Level2_1: Level2_1{
Level1s: []Level1{
Level1{Value: "value3-3"},
Level1{Value: "value4-4"},
},
},
}
if err := DB.Create(&want[1]).Error; err != nil {
panic(err)
}
var got []Level3
if err := DB.Preload("Level2").Preload("Level2.Level1s").Preload("Level2_1").Preload("Level2_1.Level1s").Preload("Level2_1.Level1s.Level0s").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func TestManyToManyPreload(t *testing.T) {
type (
Level1 struct {
ID uint `gorm:"primary_key;"`
Value string
}
Level2 struct {
ID uint `gorm:"primary_key;"`
Value string
Level1s []Level1 `gorm:"many2many:levels;"`
}
)
DB.DropTableIfExists(&Level2{})
DB.DropTableIfExists(&Level1{})
if err := DB.AutoMigrate(&Level2{}, &Level1{}).Error; err != nil {
panic(err)
}
want := Level2{Value: "Bob", Level1s: []Level1{
Level1{Value: "ru"},
Level1{Value: "en"},
}}
if err := DB.Save(&want).Error; err != nil {
panic(err)
}
var got Level2
if err := DB.Preload("Level1s").Find(&got).Error; err != nil {
panic(err)
}
if !reflect.DeepEqual(got, want) {
t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
}
}
func toJSONString(v interface{}) []byte {
r, _ := json.MarshalIndent(v, "", " ")
return r
}