--- /dev/null
+package gorm_test
+
+import "testing"
+
+type BasePost struct {
+ Id int64
+ Title string
+ URL string
+}
+
+type Author struct {
+ ID string
+ Name string
+ Email string
+}
+
+type HNPost struct {
+ BasePost
+ Author `gorm:"embedded_prefix:user_"` // Embedded struct
+ Upvotes int32
+}
+
+type EngadgetPost struct {
+ BasePost BasePost `gorm:"embedded"`
+ Author Author `gorm:"embedded;embedded_prefix:author_"` // Embedded struct
+ ImageUrl string
+}
+
+func TestPrefixColumnNameForEmbeddedStruct(t *testing.T) {
+ dialect := DB.NewScope(&EngadgetPost{}).Dialect()
+ engadgetPostScope := DB.NewScope(&EngadgetPost{})
+ if !dialect.HasColumn(engadgetPostScope.TableName(), "author_id") || !dialect.HasColumn(engadgetPostScope.TableName(), "author_name") || !dialect.HasColumn(engadgetPostScope.TableName(), "author_email") {
+ t.Errorf("should has prefix for embedded columns")
+ }
+
+ if len(engadgetPostScope.PrimaryFields()) != 1 {
+ t.Errorf("should have only one primary field with embedded struct, but got %v", len(engadgetPostScope.PrimaryFields()))
+ }
+
+ hnScope := DB.NewScope(&HNPost{})
+ if !dialect.HasColumn(hnScope.TableName(), "user_id") || !dialect.HasColumn(hnScope.TableName(), "user_name") || !dialect.HasColumn(hnScope.TableName(), "user_email") {
+ t.Errorf("should has prefix for embedded columns")
+ }
+}
+
+func TestSaveAndQueryEmbeddedStruct(t *testing.T) {
+ DB.Save(&HNPost{BasePost: BasePost{Title: "news"}})
+ DB.Save(&HNPost{BasePost: BasePost{Title: "hn_news"}})
+ var news HNPost
+ if err := DB.First(&news, "title = ?", "hn_news").Error; err != nil {
+ t.Errorf("no error should happen when query with embedded struct, but got %v", err)
+ } else if news.Title != "hn_news" {
+ t.Errorf("embedded struct's value should be scanned correctly")
+ }
+
+ DB.Save(&EngadgetPost{BasePost: BasePost{Title: "engadget_news"}})
+ var egNews EngadgetPost
+ if err := DB.First(&egNews, "title = ?", "engadget_news").Error; err != nil {
+ t.Errorf("no error should happen when query with embedded struct, but got %v", err)
+ } else if egNews.BasePost.Title != "engadget_news" {
+ t.Errorf("embedded struct's value should be scanned correctly")
+ }
+
+ if DB.NewScope(&HNPost{}).PrimaryField() == nil {
+ t.Errorf("primary key with embedded struct should works")
+ }
+
+ for _, field := range DB.NewScope(&HNPost{}).Fields() {
+ if field.Name == "BasePost" {
+ t.Errorf("scope Fields should not contain embedded struct")
+ }
+ }
+}
+
+func TestEmbeddedPointerTypeStruct(t *testing.T) {
+ type HNPost struct {
+ *BasePost
+ Upvotes int32
+ }
+
+ DB.Create(&HNPost{BasePost: &BasePost{Title: "embedded_pointer_type"}})
+
+ var hnPost HNPost
+ if err := DB.First(&hnPost, "title = ?", "embedded_pointer_type").Error; err != nil {
+ t.Errorf("No error should happen when find embedded pointer type, but got %v", err)
+ }
+
+ if hnPost.Title != "embedded_pointer_type" {
+ t.Errorf("Should find correct value for embedded pointer type")
+ }
+}