"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

func TestCustomizeColumn(t *testing.T) {
	type CustomizeColumn struct {
		ID   int64      `gorm:"column:mapped_id; primary_key:yes"`
		Name string     `gorm:"column:mapped_name"`
		Date *time.Time `gorm:"column:mapped_time"`
	}

	DB.Migrator().DropTable(&CustomizeColumn{})
	DB.AutoMigrate(&CustomizeColumn{})

	expected := "foo"
	now := time.Now()

		ID uint
	}
	DB.Migrator().DropTable(&EmptyStruct{})

	if err := DB.AutoMigrate(&EmptyStruct{}); err != nil {
		t.Errorf("no error should happen when auto migrate, but got %v", err)
	}

	if err := DB.Create(&EmptyStruct{}).Error; err != nil {
		t.Errorf("No error should happen when creating user, but got %v", err)
	}
}

func TestCreateEmptySlice(t *testing.T) {
	data := []User{}

	}

	// Append
	DB.Model(&users).Association("Pets").Append(
		&Pet{Name: "pet-slice-append-1"},
		[]*Pet{{Name: "pet-slice-append-2-1"}, {Name: "pet-slice-append-2-2"}},
		&Pet{Name: "pet-slice-append-3"},
	)

	AssertAssociationCount(t, users, "Pets", 10, "After Append")

	// Replace -> same as append
	DB.Model(&users).Association("Pets").Replace(

				if curIdx := getRIndex(sorted, c.name); curIdx == -1 {
					// if before callback already sorted, append current callback just after it
					sorted = append(sorted[:sortedIdx], append([]string{c.name}, sorted[sortedIdx:]...)...)
				} else if curIdx > sortedIdx {
					return fmt.Errorf("conflicting callback %s with before %s", c.name, c.before)
				}
			} else if idx := getRIndex(names, c.before); idx != -1 {
				// if before callback exists

}

func (c *wrapperTx) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) {
	c.conn.got = append(c.conn.got, query)
	return c.Tx.PrepareContext(ctx, query)
}

func (c *wrapperTx) ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error) {
	c.conn.got = append(c.conn.got, query)
	return c.Tx.ExecContext(ctx, query, args...)
}

							// nested relation fields
							relFields := make([]*schema.Field, 0, subNameCount-1)
							relFields = append(relFields, rel.Field)
							for _, name := range names[1 : subNameCount-1] {
								rel = rel.FieldSchema.Relationships.Relations[name]
								relFields = append(relFields, rel.Field)
							}
							// lastest name is raw dbname
							dbName := names[subNameCount-1]

		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")
	}

	var egPosts []EngadgetPost
	if err := DB.Order("author_name asc").Find(&egPosts).Error; err != nil {
		t.Fatalf("no error should happen when query with embedded struct, but got %v", err)
	}

	txCtx.Create(&user)

	var result1 User
	if err := txCtx.Find(&result1, user.ID).Error; err != nil {
		t.Fatalf("no error should happen but got %v", err)
	}

	time.Sleep(time.Second)

	var result2 User
	if err := tx.Find(&result2, user.ID).Error; err != nil {
		t.Fatalf("no error should happen but got %v", err)
	}

	user2 := *GetUser("prepared_stmt2", Config{})
	if err := txCtx.Create(&user2).Error; err == nil {

		}
	} else {
		builder.WriteByte('*')
	}
}

// MergeClause merge order by clauses
func (returning Returning) MergeClause(clause *Clause) {
	if v, ok := clause.Expression.(Returning); ok {
		returning.Columns = append(v.Columns, returning.Columns...)
	}

	clause.Expression = returning

				orderBy.Columns = orderBy.Columns[i:]
				clause.Expression = orderBy
				return
			}
		}

		copiedColumns := make([]OrderByColumn, len(v.Columns))
		copy(copiedColumns, v.Columns)
		orderBy.Columns = append(copiedColumns, orderBy.Columns...)
	}

	clause.Expression = orderBy