Added test for scanning embedded data into structs

tests/scan_test.go

@@ -10,6 +10,11 @@ import (
 	. "gorm.io/gorm/utils/tests"
 )
 
+type PersonAddressInfo struct {
+	Person  *Person  `gorm:"embedded"`
+	Address *Address `gorm:"embedded"`
+}
+
 func TestScan(t *testing.T) {
 	user1 := User{Name: "ScanUser1", Age: 1}
 	user2 := User{Name: "ScanUser2", Age: 10}
@@ -156,3 +161,34 @@ func TestScanRows(t *testing.T) {
 		t.Fatalf("failed to scan ages, got error %v, ages: %v", err, name)
 	}
 }
+
+func TestScanToEmbedded(t *testing.T) {
+	person1 := Person{Name: "person 1"}
+	person2 := Person{Name: "person 2"}
+	DB.Save(&person1).Save(&person2)
+
+	address1 := Address{Name: "address 1"}
+	address2 := Address{Name: "address 2"}
+	DB.Save(&address1).Save(&address2)
+
+	DB.Create(&PersonAddress{PersonID: person1.ID, AddressID: int(address1.ID)})
+	DB.Create(&PersonAddress{PersonID: person1.ID, AddressID: int(address2.ID)})
+	DB.Create(&PersonAddress{PersonID: person2.ID, AddressID: int(address1.ID)})
+
+	var personAddressInfoList []*PersonAddressInfo
+	if err := DB.Select("people.*, addresses.*").
+		Table("people").
+		Joins("inner join person_addresses on people.id = person_addresses.person_id").
+		Joins("inner join addresses on person_addresses.address_id = addresses.id").
+		Find(&personAddressInfoList).Error; err != nil {
+		t.Errorf("Failed, got error: %v", err)
+	}
+
+	for _, info := range personAddressInfoList {
+		if info.Person != nil {
+			if info.Person.ID == person1.ID && info.Person.Name != person1.Name {
+				t.Errorf("Failed, expected %v, got %v", person1.Name, info.Person.Name)
+			}
+		}
+	}
+}