gorm/tests/associations_test.go

856 lines
25 KiB
Go

package tests_test
import (
"testing"
. "github.com/jinzhu/gorm/tests"
)
func AssertAssociationCount(t *testing.T, data interface{}, name string, result int64, reason string) {
if count := DB.Model(data).Association(name).Count(); count != result {
t.Errorf("invalid %v count %v, expects: %v got %v", name, reason, result, count)
}
var newUser User
if user, ok := data.(User); ok {
DB.Find(&newUser, "id = ?", user.ID)
} else if user, ok := data.(*User); ok {
DB.Find(&newUser, "id = ?", user.ID)
}
if newUser.ID != 0 {
if count := DB.Model(&newUser).Association(name).Count(); count != result {
t.Errorf("invalid %v count %v, expects: %v got %v", name, reason, result, count)
}
}
}
func TestBelongsToAssociation(t *testing.T) {
var user = *GetUser("belongs-to", Config{Company: true, Manager: true})
if err := DB.Create(&user).Error; err != nil {
t.Fatalf("errors happened when create: %v", err)
}
CheckUser(t, user, user)
// Find
var user2 User
DB.Find(&user2, "id = ?", user.ID)
DB.Model(&user2).Association("Company").Find(&user2.Company)
user2.Manager = &User{}
DB.Model(&user2).Association("Manager").Find(user2.Manager)
CheckUser(t, user2, user)
// Count
AssertAssociationCount(t, user, "Company", 1, "")
AssertAssociationCount(t, user, "Manager", 1, "")
// Append
var company = Company{Name: "company-belongs-to-append"}
var manager = GetUser("manager-belongs-to-append", Config{})
if err := DB.Model(&user2).Association("Company").Append(&company); err != nil {
t.Fatalf("Error happened when append Company, got %v", err)
}
if company.ID == 0 {
t.Fatalf("Company's ID should be created")
}
if err := DB.Model(&user2).Association("Manager").Append(manager); err != nil {
t.Fatalf("Error happened when append Manager, got %v", err)
}
if manager.ID == 0 {
t.Fatalf("Manager's ID should be created")
}
user.Company = company
user.Manager = manager
user.CompanyID = &company.ID
user.ManagerID = &manager.ID
CheckUser(t, user2, user)
AssertAssociationCount(t, user2, "Company", 1, "AfterAppend")
AssertAssociationCount(t, user2, "Manager", 1, "AfterAppend")
// Replace
var company2 = Company{Name: "company-belongs-to-replace"}
var manager2 = GetUser("manager-belongs-to-replace", Config{})
if err := DB.Model(&user2).Association("Company").Replace(&company2); err != nil {
t.Fatalf("Error happened when replace Company, got %v", err)
}
if company2.ID == 0 {
t.Fatalf("Company's ID should be created")
}
if err := DB.Model(&user2).Association("Manager").Replace(manager2); err != nil {
t.Fatalf("Error happened when replace Manager, got %v", err)
}
if manager2.ID == 0 {
t.Fatalf("Manager's ID should be created")
}
user.Company = company2
user.Manager = manager2
user.CompanyID = &company2.ID
user.ManagerID = &manager2.ID
CheckUser(t, user2, user)
AssertAssociationCount(t, user2, "Company", 1, "AfterReplace")
AssertAssociationCount(t, user2, "Manager", 1, "AfterReplace")
// Delete
if err := DB.Model(&user2).Association("Company").Delete(&Company{}); err != nil {
t.Fatalf("Error happened when delete Company, got %v", err)
}
AssertAssociationCount(t, user2, "Company", 1, "after delete non-existing data")
if err := DB.Model(&user2).Association("Company").Delete(&company2); err != nil {
t.Fatalf("Error happened when delete Company, got %v", err)
}
AssertAssociationCount(t, user2, "Company", 0, "after delete")
if err := DB.Model(&user2).Association("Manager").Delete(&User{}); err != nil {
t.Fatalf("Error happened when delete Manager, got %v", err)
}
AssertAssociationCount(t, user2, "Manager", 1, "after delete non-existing data")
if err := DB.Model(&user2).Association("Manager").Delete(manager2); err != nil {
t.Fatalf("Error happened when delete Manager, got %v", err)
}
AssertAssociationCount(t, user2, "Manager", 0, "after delete")
// Prepare Data for Clear
if err := DB.Model(&user2).Association("Company").Append(&company); err != nil {
t.Fatalf("Error happened when append Company, got %v", err)
}
if err := DB.Model(&user2).Association("Manager").Append(manager); err != nil {
t.Fatalf("Error happened when append Manager, got %v", err)
}
AssertAssociationCount(t, user2, "Company", 1, "after prepare data")
AssertAssociationCount(t, user2, "Manager", 1, "after prepare data")
// Clear
if err := DB.Model(&user2).Association("Company").Clear(); err != nil {
t.Errorf("Error happened when clear Company, got %v", err)
}
if err := DB.Model(&user2).Association("Manager").Clear(); err != nil {
t.Errorf("Error happened when clear Manager, got %v", err)
}
AssertAssociationCount(t, user2, "Company", 0, "after clear")
AssertAssociationCount(t, user2, "Manager", 0, "after clear")
}
func TestBelongsToAssociationForSlice(t *testing.T) {
var users = []User{
*GetUser("slice-belongs-to-1", Config{Company: true, Manager: true}),
*GetUser("slice-belongs-to-2", Config{Company: true, Manager: false}),
*GetUser("slice-belongs-to-3", Config{Company: true, Manager: true}),
}
DB.Create(&users)
AssertAssociationCount(t, users, "Company", 3, "")
AssertAssociationCount(t, users, "Manager", 2, "")
// Find
var companies []Company
if DB.Model(&users).Association("Company").Find(&companies); len(companies) != 3 {
t.Errorf("companies count should be %v, but got %v", 3, len(companies))
}
var managers []User
if DB.Model(&users).Association("Manager").Find(&managers); len(managers) != 2 {
t.Errorf("managers count should be %v, but got %v", 2, len(managers))
}
// Append
DB.Model(&users).Association("Company").Append(
&Company{Name: "company-slice-append-1"},
&Company{Name: "company-slice-append-2"},
&Company{Name: "company-slice-append-3"},
)
AssertAssociationCount(t, users, "Company", 3, "After Append")
DB.Model(&users).Association("Manager").Append(
GetUser("manager-slice-belongs-to-1", Config{}),
GetUser("manager-slice-belongs-to-2", Config{}),
GetUser("manager-slice-belongs-to-3", Config{}),
)
AssertAssociationCount(t, users, "Manager", 3, "After Append")
if err := DB.Model(&users).Association("Manager").Append(
GetUser("manager-slice-belongs-to-test-1", Config{}),
).Error; err == nil {
t.Errorf("unmatched length when update user's manager")
}
// Replace -> same as append
// Delete
if err := DB.Model(&users).Association("Company").Delete(&users[0].Company); err != nil {
t.Errorf("no error should happend when deleting company, but got %v", err)
}
if users[0].CompanyID != nil || users[0].Company.ID != 0 {
t.Errorf("users[0]'s company should be deleted'")
}
AssertAssociationCount(t, users, "Company", 2, "After Delete")
// Clear
DB.Model(&users).Association("Company").Clear()
AssertAssociationCount(t, users, "Company", 0, "After Clear")
DB.Model(&users).Association("Manager").Clear()
AssertAssociationCount(t, users, "Manager", 0, "After Clear")
// shared company
company := Company{Name: "shared"}
if err := DB.Model(&users[0]).Association("Company").Append(&company); err != nil {
t.Errorf("Error happened when append company to user, got %v", err)
}
if err := DB.Model(&users[1]).Association("Company").Append(&company); err != nil {
t.Errorf("Error happened when append company to user, got %v", err)
}
if users[0].CompanyID == nil || users[1].CompanyID == nil || *users[0].CompanyID != *users[1].CompanyID {
t.Errorf("user's company id should exists and equal, but its: %v, %v", users[0].CompanyID, users[1].CompanyID)
}
DB.Model(&users[0]).Association("Company").Delete(&company)
AssertAssociationCount(t, users[0], "Company", 0, "After Delete")
AssertAssociationCount(t, users[1], "Company", 1, "After other user Delete")
}
func TestHasOneAssociation(t *testing.T) {
var user = *GetUser("hasone", Config{Account: true})
if err := DB.Create(&user).Error; err != nil {
t.Fatalf("errors happened when create: %v", err)
}
CheckUser(t, user, user)
// Find
var user2 User
DB.Find(&user2, "id = ?", user.ID)
DB.Model(&user2).Association("Account").Find(&user2.Account)
CheckUser(t, user2, user)
// Count
AssertAssociationCount(t, user, "Account", 1, "")
// Append
var account = Account{Number: "account-has-one-append"}
if err := DB.Model(&user2).Association("Account").Append(&account); err != nil {
t.Fatalf("Error happened when append account, got %v", err)
}
if account.ID == 0 {
t.Fatalf("Account's ID should be created")
}
user.Account = account
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Account", 1, "AfterAppend")
// Replace
var account2 = Account{Number: "account-has-one-replace"}
if err := DB.Model(&user2).Association("Account").Replace(&account2); err != nil {
t.Fatalf("Error happened when append Account, got %v", err)
}
if account2.ID == 0 {
t.Fatalf("account2's ID should be created")
}
user.Account = account2
CheckUser(t, user2, user)
AssertAssociationCount(t, user2, "Account", 1, "AfterReplace")
// Delete
if err := DB.Model(&user2).Association("Account").Delete(&Account{}); err != nil {
t.Fatalf("Error happened when delete account, got %v", err)
}
AssertAssociationCount(t, user2, "Account", 1, "after delete non-existing data")
if err := DB.Model(&user2).Association("Account").Delete(&account2); err != nil {
t.Fatalf("Error happened when delete Account, got %v", err)
}
AssertAssociationCount(t, user2, "Account", 0, "after delete")
// Prepare Data for Clear
if err := DB.Model(&user2).Association("Account").Append(&account); err != nil {
t.Fatalf("Error happened when append Account, got %v", err)
}
AssertAssociationCount(t, user2, "Account", 1, "after prepare data")
// Clear
if err := DB.Model(&user2).Association("Account").Clear(); err != nil {
t.Errorf("Error happened when clear Account, got %v", err)
}
AssertAssociationCount(t, user2, "Account", 0, "after clear")
}
func TestHasOneAssociationForSlice(t *testing.T) {
var users = []User{
*GetUser("slice-hasone-1", Config{Account: true}),
*GetUser("slice-hasone-2", Config{Account: false}),
*GetUser("slice-hasone-3", Config{Account: true}),
}
DB.Create(&users)
// Count
AssertAssociationCount(t, users, "Account", 2, "")
// Find
var accounts []Account
if DB.Model(&users).Association("Account").Find(&accounts); len(accounts) != 2 {
t.Errorf("accounts count should be %v, but got %v", 3, len(accounts))
}
// Append
DB.Model(&users).Association("Account").Append(
&Account{Number: "account-slice-append-1"},
&Account{Number: "account-slice-append-2"},
&Account{Number: "account-slice-append-3"},
)
AssertAssociationCount(t, users, "Account", 3, "After Append")
// Replace -> same as append
// Delete
if err := DB.Model(&users).Association("Account").Delete(&users[0].Account); err != nil {
t.Errorf("no error should happend when deleting account, but got %v", err)
}
AssertAssociationCount(t, users, "Account", 2, "after delete")
// Clear
DB.Model(&users).Association("Account").Clear()
AssertAssociationCount(t, users, "Account", 0, "After Clear")
}
func TestPolymorphicHasOneAssociation(t *testing.T) {
var pet = Pet{Name: "hasone", Toy: Toy{Name: "toy-has-one"}}
if err := DB.Create(&pet).Error; err != nil {
t.Fatalf("errors happened when create: %v", err)
}
CheckPet(t, pet, pet)
// Find
var pet2 Pet
DB.Find(&pet2, "id = ?", pet.ID)
DB.Model(&pet2).Association("Toy").Find(&pet2.Toy)
CheckPet(t, pet2, pet)
// Count
AssertAssociationCount(t, pet, "Toy", 1, "")
// Append
var toy = Toy{Name: "toy-has-one-append"}
if err := DB.Model(&pet2).Association("Toy").Append(&toy); err != nil {
t.Fatalf("Error happened when append toy, got %v", err)
}
if toy.ID == 0 {
t.Fatalf("Toy's ID should be created")
}
pet.Toy = toy
CheckPet(t, pet2, pet)
AssertAssociationCount(t, pet, "Toy", 1, "AfterAppend")
// Replace
var toy2 = Toy{Name: "toy-has-one-replace"}
if err := DB.Model(&pet2).Association("Toy").Replace(&toy2); err != nil {
t.Fatalf("Error happened when append Toy, got %v", err)
}
if toy2.ID == 0 {
t.Fatalf("toy2's ID should be created")
}
pet.Toy = toy2
CheckPet(t, pet2, pet)
AssertAssociationCount(t, pet2, "Toy", 1, "AfterReplace")
// Delete
if err := DB.Model(&pet2).Association("Toy").Delete(&Toy{}); err != nil {
t.Fatalf("Error happened when delete toy, got %v", err)
}
AssertAssociationCount(t, pet2, "Toy", 1, "after delete non-existing data")
if err := DB.Model(&pet2).Association("Toy").Delete(&toy2); err != nil {
t.Fatalf("Error happened when delete Toy, got %v", err)
}
AssertAssociationCount(t, pet2, "Toy", 0, "after delete")
// Prepare Data for Clear
if err := DB.Model(&pet2).Association("Toy").Append(&toy); err != nil {
t.Fatalf("Error happened when append Toy, got %v", err)
}
AssertAssociationCount(t, pet2, "Toy", 1, "after prepare data")
// Clear
if err := DB.Model(&pet2).Association("Toy").Clear(); err != nil {
t.Errorf("Error happened when clear Toy, got %v", err)
}
AssertAssociationCount(t, pet2, "Toy", 0, "after clear")
}
func TestPolymorphicHasOneAssociationForSlice(t *testing.T) {
var pets = []Pet{
{Name: "hasone-1", Toy: Toy{Name: "toy-has-one"}},
{Name: "hasone-2", Toy: Toy{}},
{Name: "hasone-3", Toy: Toy{Name: "toy-has-one"}},
}
DB.Create(&pets)
// Count
AssertAssociationCount(t, pets, "Toy", 2, "")
// Find
var toys []Toy
if DB.Model(&pets).Association("Toy").Find(&toys); len(toys) != 2 {
t.Errorf("toys count should be %v, but got %v", 3, len(toys))
}
// Append
DB.Model(&pets).Association("Toy").Append(
&Toy{Name: "toy-slice-append-1"},
&Toy{Name: "toy-slice-append-2"},
&Toy{Name: "toy-slice-append-3"},
)
AssertAssociationCount(t, pets, "Toy", 3, "After Append")
// Replace -> same as append
// Delete
if err := DB.Model(&pets).Association("Toy").Delete(&pets[0].Toy); err != nil {
t.Errorf("no error should happend when deleting toy, but got %v", err)
}
AssertAssociationCount(t, pets, "Toy", 2, "after delete")
// Clear
DB.Model(&pets).Association("Toy").Clear()
AssertAssociationCount(t, pets, "Toy", 0, "After Clear")
}
func TestHasManyAssociation(t *testing.T) {
var user = *GetUser("hasmany", Config{Pets: 2})
if err := DB.Create(&user).Error; err != nil {
t.Fatalf("errors happened when create: %v", err)
}
CheckUser(t, user, user)
// Find
var user2 User
DB.Find(&user2, "id = ?", user.ID)
DB.Model(&user2).Association("Pets").Find(&user2.Pets)
CheckUser(t, user2, user)
// Count
AssertAssociationCount(t, user, "Pets", 2, "")
// Append
var pet = Pet{Name: "pet-has-many-append"}
if err := DB.Model(&user2).Association("Pets").Append(&pet); err != nil {
t.Fatalf("Error happened when append account, got %v", err)
}
if pet.ID == 0 {
t.Fatalf("Pet's ID should be created")
}
user.Pets = append(user.Pets, &pet)
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Pets", 3, "AfterAppend")
var pets = []Pet{{Name: "pet-has-many-append-1-1"}, {Name: "pet-has-many-append-1-1"}}
if err := DB.Model(&user2).Association("Pets").Append(&pets); err != nil {
t.Fatalf("Error happened when append pet, got %v", err)
}
for _, pet := range pets {
var pet = pet
if pet.ID == 0 {
t.Fatalf("Pet's ID should be created")
}
user.Pets = append(user.Pets, &pet)
}
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Pets", 5, "AfterAppendSlice")
// Replace
var pet2 = Pet{Name: "pet-has-many-replace"}
if err := DB.Model(&user2).Association("Pets").Replace(&pet2); err != nil {
t.Fatalf("Error happened when append pet, got %v", err)
}
if pet2.ID == 0 {
t.Fatalf("pet2's ID should be created")
}
user.Pets = []*Pet{&pet2}
CheckUser(t, user2, user)
AssertAssociationCount(t, user2, "Pets", 1, "AfterReplace")
// Delete
if err := DB.Model(&user2).Association("Pets").Delete(&Pet{}); err != nil {
t.Fatalf("Error happened when delete pet, got %v", err)
}
AssertAssociationCount(t, user2, "Pets", 1, "after delete non-existing data")
if err := DB.Model(&user2).Association("Pets").Delete(&pet2); err != nil {
t.Fatalf("Error happened when delete Pets, got %v", err)
}
AssertAssociationCount(t, user2, "Pets", 0, "after delete")
// Prepare Data for Clear
if err := DB.Model(&user2).Association("Pets").Append(&pet); err != nil {
t.Fatalf("Error happened when append Pets, got %v", err)
}
AssertAssociationCount(t, user2, "Pets", 1, "after prepare data")
// Clear
if err := DB.Model(&user2).Association("Pets").Clear(); err != nil {
t.Errorf("Error happened when clear Pets, got %v", err)
}
AssertAssociationCount(t, user2, "Pets", 0, "after clear")
}
func TestHasManyAssociationForSlice(t *testing.T) {
var users = []User{
*GetUser("slice-hasmany-1", Config{Pets: 2}),
*GetUser("slice-hasmany-2", Config{Pets: 0}),
*GetUser("slice-hasmany-3", Config{Pets: 4}),
}
DB.Create(&users)
// Count
AssertAssociationCount(t, users, "Pets", 6, "")
// Find
var pets []Pet
if DB.Model(&users).Association("Pets").Find(&pets); len(pets) != 6 {
t.Errorf("pets count should be %v, but got %v", 6, len(pets))
}
// Append
DB.Model(&users).Association("Pets").Append(
&Pet{Name: "pet-slice-append-1"},
[]*Pet{{Name: "pet-slice-append-2-1"}, {Name: "pet-slice-append-2-2"}},
&Pet{Name: "pet-slice-append-3"},
)
AssertAssociationCount(t, users, "Pets", 10, "After Append")
// Replace -> same as append
DB.Model(&users).Association("Pets").Replace(
[]*Pet{{Name: "pet-slice-replace-1-1"}, {Name: "pet-slice-replace-1-2"}},
[]*Pet{{Name: "pet-slice-replace-2-1"}, {Name: "pet-slice-replace-2-2"}},
&Pet{Name: "pet-slice-replace-3"},
)
AssertAssociationCount(t, users, "Pets", 5, "After Append")
// Delete
if err := DB.Model(&users).Association("Pets").Delete(&users[2].Pets); err != nil {
t.Errorf("no error should happend when deleting pet, but got %v", err)
}
AssertAssociationCount(t, users, "Pets", 4, "after delete")
if err := DB.Model(&users).Association("Pets").Delete(users[0].Pets[0], users[1].Pets[1]); err != nil {
t.Errorf("no error should happend when deleting pet, but got %v", err)
}
AssertAssociationCount(t, users, "Pets", 2, "after delete")
// Clear
DB.Model(&users).Association("Pets").Clear()
AssertAssociationCount(t, users, "Pets", 0, "After Clear")
}
func TestPolymorphicHasManyAssociation(t *testing.T) {
var user = *GetUser("hasmany", Config{Toys: 2})
if err := DB.Create(&user).Error; err != nil {
t.Fatalf("errors happened when create: %v", err)
}
CheckUser(t, user, user)
// Find
var user2 User
DB.Find(&user2, "id = ?", user.ID)
DB.Model(&user2).Association("Toys").Find(&user2.Toys)
CheckUser(t, user2, user)
// Count
AssertAssociationCount(t, user, "Toys", 2, "")
// Append
var toy = Toy{Name: "toy-has-many-append"}
if err := DB.Model(&user2).Association("Toys").Append(&toy); err != nil {
t.Fatalf("Error happened when append account, got %v", err)
}
return
if toy.ID == 0 {
t.Fatalf("Toy's ID should be created")
}
user.Toys = append(user.Toys, toy)
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Toys", 3, "AfterAppend")
var toys = []Toy{{Name: "toy-has-many-append-1-1"}, {Name: "toy-has-many-append-1-1"}}
if err := DB.Model(&user2).Association("Toys").Append(&toys); err != nil {
t.Fatalf("Error happened when append toy, got %v", err)
}
for _, toy := range toys {
var toy = toy
if toy.ID == 0 {
t.Fatalf("Toy's ID should be created")
}
user.Toys = append(user.Toys, toy)
}
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Toys", 5, "AfterAppendSlice")
// Replace
var toy2 = Toy{Name: "toy-has-many-replace"}
if err := DB.Model(&user2).Association("Toys").Replace(&toy2); err != nil {
t.Fatalf("Error happened when append toy, got %v", err)
}
if toy2.ID == 0 {
t.Fatalf("toy2's ID should be created")
}
user.Toys = []Toy{toy2}
CheckUser(t, user2, user)
AssertAssociationCount(t, user2, "Toys", 1, "AfterReplace")
// Delete
if err := DB.Model(&user2).Association("Toys").Delete(&Toy{}); err != nil {
t.Fatalf("Error happened when delete toy, got %v", err)
}
AssertAssociationCount(t, user2, "Toys", 1, "after delete non-existing data")
if err := DB.Model(&user2).Association("Toys").Delete(&toy2); err != nil {
t.Fatalf("Error happened when delete Toys, got %v", err)
}
AssertAssociationCount(t, user2, "Toys", 0, "after delete")
// Prepare Data for Clear
if err := DB.Model(&user2).Association("Toys").Append(&toy); err != nil {
t.Fatalf("Error happened when append Toys, got %v", err)
}
AssertAssociationCount(t, user2, "Toys", 1, "after prepare data")
// Clear
if err := DB.Model(&user2).Association("Toys").Clear(); err != nil {
t.Errorf("Error happened when clear Toys, got %v", err)
}
AssertAssociationCount(t, user2, "Toys", 0, "after clear")
}
func TestPolymorphicHasManyAssociationForSlice(t *testing.T) {
var users = []User{
*GetUser("slice-hasmany-1", Config{Toys: 2}),
*GetUser("slice-hasmany-2", Config{Toys: 0}),
*GetUser("slice-hasmany-3", Config{Toys: 4}),
}
DB.Create(&users)
// Count
AssertAssociationCount(t, users, "Toys", 6, "")
// Find
var toys []Toy
if DB.Model(&users).Association("Toys").Find(&toys); len(toys) != 6 {
t.Errorf("toys count should be %v, but got %v", 6, len(toys))
}
// Append
DB.Model(&users).Association("Toys").Append(
&Toy{Name: "toy-slice-append-1"},
[]Toy{{Name: "toy-slice-append-2-1"}, {Name: "toy-slice-append-2-2"}},
&Toy{Name: "toy-slice-append-3"},
)
AssertAssociationCount(t, users, "Toys", 10, "After Append")
// Replace -> same as append
DB.Model(&users).Association("Toys").Replace(
[]*Toy{{Name: "toy-slice-replace-1-1"}, {Name: "toy-slice-replace-1-2"}},
[]*Toy{{Name: "toy-slice-replace-2-1"}, {Name: "toy-slice-replace-2-2"}},
&Toy{Name: "toy-slice-replace-3"},
)
AssertAssociationCount(t, users, "Toys", 5, "After Append")
// Delete
if err := DB.Model(&users).Association("Toys").Delete(&users[2].Toys); err != nil {
t.Errorf("no error should happend when deleting toy, but got %v", err)
}
AssertAssociationCount(t, users, "Toys", 4, "after delete")
if err := DB.Model(&users).Association("Toys").Delete(users[0].Toys[0], users[1].Toys[1]); err != nil {
t.Errorf("no error should happend when deleting toy, but got %v", err)
}
AssertAssociationCount(t, users, "Toys", 2, "after delete")
// Clear
DB.Model(&users).Association("Toys").Clear()
AssertAssociationCount(t, users, "Toys", 0, "After Clear")
}
func TestMany2ManyAssociation(t *testing.T) {
var user = *GetUser("many2many", Config{Languages: 2})
if err := DB.Create(&user).Error; err != nil {
t.Fatalf("errors happened when create: %v", err)
}
CheckUser(t, user, user)
// Find
var user2 User
DB.Find(&user2, "id = ?", user.ID)
DB.Model(&user2).Association("Languages").Find(&user2.Languages)
CheckUser(t, user2, user)
// Count
AssertAssociationCount(t, user, "Languages", 2, "")
// Append
var language = Language{Code: "language-has-many-append", Name: "language-has-many-append"}
DB.Create(&language)
if err := DB.Model(&user2).Association("Languages").Append(&language); err != nil {
t.Fatalf("Error happened when append account, got %v", err)
}
user.Languages = append(user.Languages, language)
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Languages", 3, "AfterAppend")
var languages = []Language{
{Code: "language-has-many-append-1-1", Name: "language-has-many-append-1-1"},
{Code: "language-has-many-append-2-1", Name: "language-has-many-append-2-1"},
}
DB.Create(&languages)
if err := DB.Model(&user2).Association("Languages").Append(&languages); err != nil {
t.Fatalf("Error happened when append language, got %v", err)
}
user.Languages = append(user.Languages, languages...)
CheckUser(t, user2, user)
AssertAssociationCount(t, user, "Languages", 5, "AfterAppendSlice")
// Replace
var language2 = Language{Code: "language-has-many-replace", Name: "language-has-many-replace"}
DB.Create(&language2)
if err := DB.Model(&user2).Association("Languages").Replace(&language2); err != nil {
t.Fatalf("Error happened when append language, got %v", err)
}
user.Languages = []Language{language2}
CheckUser(t, user2, user)
AssertAssociationCount(t, user2, "Languages", 1, "AfterReplace")
// Delete
if err := DB.Model(&user2).Association("Languages").Delete(&Language{}); err != nil {
t.Fatalf("Error happened when delete language, got %v", err)
}
AssertAssociationCount(t, user2, "Languages", 1, "after delete non-existing data")
if err := DB.Model(&user2).Association("Languages").Delete(&language2); err != nil {
t.Fatalf("Error happened when delete Languages, got %v", err)
}
AssertAssociationCount(t, user2, "Languages", 0, "after delete")
// Prepare Data for Clear
if err := DB.Model(&user2).Association("Languages").Append(&language); err != nil {
t.Fatalf("Error happened when append Languages, got %v", err)
}
AssertAssociationCount(t, user2, "Languages", 1, "after prepare data")
// Clear
if err := DB.Model(&user2).Association("Languages").Clear(); err != nil {
t.Errorf("Error happened when clear Languages, got %v", err)
}
AssertAssociationCount(t, user2, "Languages", 0, "after clear")
}