Function TestSingleTableMany2ManyAssociation

tests/associations_many2many_test.go:199–278

(t *testing.T)

}

func TestSingleTableMany2ManyAssociation(t *testing.T) {
	user := *GetUser("many2many", Config{Friends: 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("Friends").Find(&user2.Friends)

	CheckUser(t, user2, user)

	// Count
	AssertAssociationCount(t, user, "Friends", 2, "")

	// Append
	friend := *GetUser("friend", Config{})

	if err := DB.Model(&user2).Association("Friends").Append(&friend); err != nil {
		t.Fatalf("Error happened when append account, got %v", err)
	}

	user.Friends = append(user.Friends, &friend)
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Friends", 3, "AfterAppend")

	friends := []*User{GetUser("friend-append-1", Config{}), GetUser("friend-append-2", Config{})}

	if err := DB.Model(&user2).Association("Friends").Append(&friends); err != nil {
		t.Fatalf("Error happened when append friend, got %v", err)
	}

	user.Friends = append(user.Friends, friends...)

	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Friends", 5, "AfterAppendSlice")

	// Replace
	friend2 := *GetUser("friend-replace-2", Config{})

	if err := DB.Model(&user2).Association("Friends").Replace(&friend2); err != nil {
		t.Fatalf("Error happened when append friend, got %v", err)
	}

	user.Friends = []*User{&friend2}
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user2, "Friends", 1, "AfterReplace")

	// Delete
	if err := DB.Model(&user2).Association("Friends").Delete(&User{}); err != nil {
		t.Fatalf("Error happened when delete friend, got %v", err)