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embedded_struct_test.go 2.83 KB
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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")
}
}
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gorm
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