--- /dev/null
+package gorm_test
+
+import (
+ "reflect"
+ "sort"
+ "testing"
+)
+
+type Cat struct {
+ Id int
+ Name string
+ Toy Toy `gorm:"polymorphic:Owner;"`
+}
+
+type Dog struct {
+ Id int
+ Name string
+ Toys []Toy `gorm:"polymorphic:Owner;"`
+}
+
+type Hamster struct {
+ Id int
+ Name string
+ PreferredToy Toy `gorm:"polymorphic:Owner;polymorphic_value:hamster_preferred"`
+ OtherToy Toy `gorm:"polymorphic:Owner;polymorphic_value:hamster_other"`
+}
+
+type Toy struct {
+ Id int
+ Name string
+ OwnerId int
+ OwnerType string
+}
+
+var compareToys = func(toys []Toy, contents []string) bool {
+ var toyContents []string
+ for _, toy := range toys {
+ toyContents = append(toyContents, toy.Name)
+ }
+ sort.Strings(toyContents)
+ sort.Strings(contents)
+ return reflect.DeepEqual(toyContents, contents)
+}
+
+func TestPolymorphic(t *testing.T) {
+ cat := Cat{Name: "Mr. Bigglesworth", Toy: Toy{Name: "cat toy"}}
+ dog := Dog{Name: "Pluto", Toys: []Toy{{Name: "dog toy 1"}, {Name: "dog toy 2"}}}
+ DB.Save(&cat).Save(&dog)
+
+ if DB.Model(&cat).Association("Toy").Count() != 1 {
+ t.Errorf("Cat's toys count should be 1")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 2 {
+ t.Errorf("Dog's toys count should be 2")
+ }
+
+ // Query
+ var catToys []Toy
+ if DB.Model(&cat).Related(&catToys, "Toy").RecordNotFound() {
+ t.Errorf("Did not find any has one polymorphic association")
+ } else if len(catToys) != 1 {
+ t.Errorf("Should have found only one polymorphic has one association")
+ } else if catToys[0].Name != cat.Toy.Name {
+ t.Errorf("Should have found the proper has one polymorphic association")
+ }
+
+ var dogToys []Toy
+ if DB.Model(&dog).Related(&dogToys, "Toys").RecordNotFound() {
+ t.Errorf("Did not find any polymorphic has many associations")
+ } else if len(dogToys) != len(dog.Toys) {
+ t.Errorf("Should have found all polymorphic has many associations")
+ }
+
+ var catToy Toy
+ DB.Model(&cat).Association("Toy").Find(&catToy)
+ if catToy.Name != cat.Toy.Name {
+ t.Errorf("Should find has one polymorphic association")
+ }
+
+ var dogToys1 []Toy
+ DB.Model(&dog).Association("Toys").Find(&dogToys1)
+ if !compareToys(dogToys1, []string{"dog toy 1", "dog toy 2"}) {
+ t.Errorf("Should find has many polymorphic association")
+ }
+
+ // Append
+ DB.Model(&cat).Association("Toy").Append(&Toy{
+ Name: "cat toy 2",
+ })
+
+ var catToy2 Toy
+ DB.Model(&cat).Association("Toy").Find(&catToy2)
+ if catToy2.Name != "cat toy 2" {
+ t.Errorf("Should update has one polymorphic association with Append")
+ }
+
+ if DB.Model(&cat).Association("Toy").Count() != 1 {
+ t.Errorf("Cat's toys count should be 1 after Append")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 2 {
+ t.Errorf("Should return two polymorphic has many associations")
+ }
+
+ DB.Model(&dog).Association("Toys").Append(&Toy{
+ Name: "dog toy 3",
+ })
+
+ var dogToys2 []Toy
+ DB.Model(&dog).Association("Toys").Find(&dogToys2)
+ if !compareToys(dogToys2, []string{"dog toy 1", "dog toy 2", "dog toy 3"}) {
+ t.Errorf("Dog's toys should be updated with Append")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 3 {
+ t.Errorf("Should return three polymorphic has many associations")
+ }
+
+ // Replace
+ DB.Model(&cat).Association("Toy").Replace(&Toy{
+ Name: "cat toy 3",
+ })
+
+ var catToy3 Toy
+ DB.Model(&cat).Association("Toy").Find(&catToy3)
+ if catToy3.Name != "cat toy 3" {
+ t.Errorf("Should update has one polymorphic association with Replace")
+ }
+
+ if DB.Model(&cat).Association("Toy").Count() != 1 {
+ t.Errorf("Cat's toys count should be 1 after Replace")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 3 {
+ t.Errorf("Should return three polymorphic has many associations")
+ }
+
+ DB.Model(&dog).Association("Toys").Replace(&Toy{
+ Name: "dog toy 4",
+ }, []Toy{
+ {Name: "dog toy 5"}, {Name: "dog toy 6"}, {Name: "dog toy 7"},
+ })
+
+ var dogToys3 []Toy
+ DB.Model(&dog).Association("Toys").Find(&dogToys3)
+ if !compareToys(dogToys3, []string{"dog toy 4", "dog toy 5", "dog toy 6", "dog toy 7"}) {
+ t.Errorf("Dog's toys should be updated with Replace")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 4 {
+ t.Errorf("Should return three polymorphic has many associations")
+ }
+
+ // Delete
+ DB.Model(&cat).Association("Toy").Delete(&catToy2)
+
+ var catToy4 Toy
+ DB.Model(&cat).Association("Toy").Find(&catToy4)
+ if catToy4.Name != "cat toy 3" {
+ t.Errorf("Should not update has one polymorphic association when Delete a unrelated Toy")
+ }
+
+ if DB.Model(&cat).Association("Toy").Count() != 1 {
+ t.Errorf("Cat's toys count should be 1")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 4 {
+ t.Errorf("Dog's toys count should be 4")
+ }
+
+ DB.Model(&cat).Association("Toy").Delete(&catToy3)
+
+ if !DB.Model(&cat).Related(&Toy{}, "Toy").RecordNotFound() {
+ t.Errorf("Toy should be deleted with Delete")
+ }
+
+ if DB.Model(&cat).Association("Toy").Count() != 0 {
+ t.Errorf("Cat's toys count should be 0 after Delete")
+ }
+
+ if DB.Model(&dog).Association("Toys").Count() != 4 {
+ t.Errorf("Dog's toys count should not be changed when delete cat's toy")
+ }
+
+ DB.Model(&dog).Association("Toys").Delete(&dogToys2)
+
+ if DB.Model(&dog).Association("Toys").Count() != 4 {
+ t.Errorf("Dog's toys count should not be changed when delete unrelated toys")
+ }
+
+ DB.Model(&dog).Association("Toys").Delete(&dogToys3)
+
+ if DB.Model(&dog).Association("Toys").Count() != 0 {
+ t.Errorf("Dog's toys count should be deleted with Delete")
+ }
+
+ // Clear
+ DB.Model(&cat).Association("Toy").Append(&Toy{
+ Name: "cat toy 2",
+ })
+
+ if DB.Model(&cat).Association("Toy").Count() != 1 {
+ t.Errorf("Cat's toys should be added with Append")
+ }
+
+ DB.Model(&cat).Association("Toy").Clear()
+
+ if DB.Model(&cat).Association("Toy").Count() != 0 {
+ t.Errorf("Cat's toys should be cleared with Clear")
+ }
+
+ DB.Model(&dog).Association("Toys").Append(&Toy{
+ Name: "dog toy 8",
+ })
+
+ if DB.Model(&dog).Association("Toys").Count() != 1 {
+ t.Errorf("Dog's toys should be added with Append")
+ }
+
+ DB.Model(&dog).Association("Toys").Clear()
+
+ if DB.Model(&dog).Association("Toys").Count() != 0 {
+ t.Errorf("Dog's toys should be cleared with Clear")
+ }
+}
+
+func TestNamedPolymorphic(t *testing.T) {
+ hamster := Hamster{Name: "Mr. Hammond", PreferredToy: Toy{Name: "bike"}, OtherToy: Toy{Name: "treadmill"}}
+ DB.Save(&hamster)
+
+ hamster2 := Hamster{}
+ DB.Preload("PreferredToy").Preload("OtherToy").Find(&hamster2, hamster.Id)
+ if hamster2.PreferredToy.Id != hamster.PreferredToy.Id || hamster2.PreferredToy.Name != hamster.PreferredToy.Name {
+ t.Errorf("Hamster's preferred toy couldn't be preloaded")
+ }
+ if hamster2.OtherToy.Id != hamster.OtherToy.Id || hamster2.OtherToy.Name != hamster.OtherToy.Name {
+ t.Errorf("Hamster's other toy couldn't be preloaded")
+ }
+
+ // clear to omit Toy.Id in count
+ hamster2.PreferredToy = Toy{}
+ hamster2.OtherToy = Toy{}
+
+ if DB.Model(&hamster2).Association("PreferredToy").Count() != 1 {
+ t.Errorf("Hamster's preferred toy count should be 1")
+ }
+
+ if DB.Model(&hamster2).Association("OtherToy").Count() != 1 {
+ t.Errorf("Hamster's other toy count should be 1")
+ }
+
+ // Query
+ var hamsterToys []Toy
+ if DB.Model(&hamster).Related(&hamsterToys, "PreferredToy").RecordNotFound() {
+ t.Errorf("Did not find any has one polymorphic association")
+ } else if len(hamsterToys) != 1 {
+ t.Errorf("Should have found only one polymorphic has one association")
+ } else if hamsterToys[0].Name != hamster.PreferredToy.Name {
+ t.Errorf("Should have found the proper has one polymorphic association")
+ }
+
+ if DB.Model(&hamster).Related(&hamsterToys, "OtherToy").RecordNotFound() {
+ t.Errorf("Did not find any has one polymorphic association")
+ } else if len(hamsterToys) != 1 {
+ t.Errorf("Should have found only one polymorphic has one association")
+ } else if hamsterToys[0].Name != hamster.OtherToy.Name {
+ t.Errorf("Should have found the proper has one polymorphic association")
+ }
+
+ hamsterToy := Toy{}
+ DB.Model(&hamster).Association("PreferredToy").Find(&hamsterToy)
+ if hamsterToy.Name != hamster.PreferredToy.Name {
+ t.Errorf("Should find has one polymorphic association")
+ }
+ hamsterToy = Toy{}
+ DB.Model(&hamster).Association("OtherToy").Find(&hamsterToy)
+ if hamsterToy.Name != hamster.OtherToy.Name {
+ t.Errorf("Should find has one polymorphic association")
+ }
+
+ // Append
+ DB.Model(&hamster).Association("PreferredToy").Append(&Toy{
+ Name: "bike 2",
+ })
+ DB.Model(&hamster).Association("OtherToy").Append(&Toy{
+ Name: "treadmill 2",
+ })
+
+ hamsterToy = Toy{}
+ DB.Model(&hamster).Association("PreferredToy").Find(&hamsterToy)
+ if hamsterToy.Name != "bike 2" {
+ t.Errorf("Should update has one polymorphic association with Append")
+ }
+
+ hamsterToy = Toy{}
+ DB.Model(&hamster).Association("OtherToy").Find(&hamsterToy)
+ if hamsterToy.Name != "treadmill 2" {
+ t.Errorf("Should update has one polymorphic association with Append")
+ }
+
+ if DB.Model(&hamster2).Association("PreferredToy").Count() != 1 {
+ t.Errorf("Hamster's toys count should be 1 after Append")
+ }
+
+ if DB.Model(&hamster2).Association("OtherToy").Count() != 1 {
+ t.Errorf("Hamster's toys count should be 1 after Append")
+ }
+
+ // Replace
+ DB.Model(&hamster).Association("PreferredToy").Replace(&Toy{
+ Name: "bike 3",
+ })
+ DB.Model(&hamster).Association("OtherToy").Replace(&Toy{
+ Name: "treadmill 3",
+ })
+
+ hamsterToy = Toy{}
+ DB.Model(&hamster).Association("PreferredToy").Find(&hamsterToy)
+ if hamsterToy.Name != "bike 3" {
+ t.Errorf("Should update has one polymorphic association with Replace")
+ }
+
+ hamsterToy = Toy{}
+ DB.Model(&hamster).Association("OtherToy").Find(&hamsterToy)
+ if hamsterToy.Name != "treadmill 3" {
+ t.Errorf("Should update has one polymorphic association with Replace")
+ }
+
+ if DB.Model(&hamster2).Association("PreferredToy").Count() != 1 {
+ t.Errorf("hamster's toys count should be 1 after Replace")
+ }
+
+ if DB.Model(&hamster2).Association("OtherToy").Count() != 1 {
+ t.Errorf("hamster's toys count should be 1 after Replace")
+ }
+
+ // Clear
+ DB.Model(&hamster).Association("PreferredToy").Append(&Toy{
+ Name: "bike 2",
+ })
+ DB.Model(&hamster).Association("OtherToy").Append(&Toy{
+ Name: "treadmill 2",
+ })
+
+ if DB.Model(&hamster).Association("PreferredToy").Count() != 1 {
+ t.Errorf("Hamster's toys should be added with Append")
+ }
+ if DB.Model(&hamster).Association("OtherToy").Count() != 1 {
+ t.Errorf("Hamster's toys should be added with Append")
+ }
+
+ DB.Model(&hamster).Association("PreferredToy").Clear()
+
+ if DB.Model(&hamster2).Association("PreferredToy").Count() != 0 {
+ t.Errorf("Hamster's preferred toy should be cleared with Clear")
+ }
+ if DB.Model(&hamster2).Association("OtherToy").Count() != 1 {
+ t.Errorf("Hamster's other toy should be still available")
+ }
+
+ DB.Model(&hamster).Association("OtherToy").Clear()
+ if DB.Model(&hamster).Association("OtherToy").Count() != 0 {
+ t.Errorf("Hamster's other toy should be cleared with Clear")
+ }
+}
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