mirror of https://github.com/go-gorm/gorm.git
118 lines
3.6 KiB
Go
118 lines
3.6 KiB
Go
package tests_test
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import (
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"reflect"
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"sort"
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"strings"
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"testing"
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"gorm.io/gorm"
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. "gorm.io/gorm/utils/tests"
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)
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func TestScan(t *testing.T) {
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user1 := User{Name: "ScanUser1", Age: 1}
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user2 := User{Name: "ScanUser2", Age: 10}
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user3 := User{Name: "ScanUser3", Age: 20}
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DB.Save(&user1).Save(&user2).Save(&user3)
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type result struct {
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ID uint
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Name string
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Age int
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}
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var res result
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DB.Table("users").Select("id, name, age").Where("id = ?", user3.ID).Scan(&res)
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if res.ID != user3.ID || res.Name != user3.Name || res.Age != int(user3.Age) {
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t.Fatalf("Scan into struct should work, got %#v, should %#v", res, user3)
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}
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var resPointer *result
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DB.Table("users").Select("id, name, age").Where("id = ?", user3.ID).Scan(&resPointer)
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if res.ID != user3.ID || res.Name != user3.Name || res.Age != int(user3.Age) {
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t.Fatalf("Scan into struct should work, got %#v, should %#v", res, user3)
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}
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DB.Table("users").Select("id, name, age").Where("id = ?", user2.ID).Scan(&res)
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if res.ID != user2.ID || res.Name != user2.Name || res.Age != int(user2.Age) {
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t.Fatalf("Scan into struct should work, got %#v, should %#v", res, user2)
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}
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DB.Model(&User{Model: gorm.Model{ID: user3.ID}}).Select("id, name, age").Scan(&res)
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if res.ID != user3.ID || res.Name != user3.Name || res.Age != int(user3.Age) {
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t.Fatalf("Scan into struct should work, got %#v, should %#v", res, user3)
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}
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var doubleAgeRes = &result{}
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if err := DB.Table("users").Select("age + age as age").Where("id = ?", user3.ID).Scan(&doubleAgeRes).Error; err != nil {
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t.Errorf("Scan to pointer of pointer")
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}
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if doubleAgeRes.Age != int(res.Age)*2 {
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t.Errorf("Scan double age as age, expect: %v, got %v", res.Age*2, doubleAgeRes.Age)
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}
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var results []result
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DB.Table("users").Select("name, age").Where("id in ?", []uint{user2.ID, user3.ID}).Scan(&results)
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sort.Slice(results, func(i, j int) bool {
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return strings.Compare(results[i].Name, results[j].Name) <= -1
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})
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if len(results) != 2 || results[0].Name != user2.Name || results[1].Name != user3.Name {
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t.Errorf("Scan into struct map, got %#v", results)
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}
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type ID uint64
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var id ID
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DB.Raw("select id from users where id = ?", user2.ID).Scan(&id)
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if uint(id) != user2.ID {
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t.Errorf("Failed to scan to customized data type")
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}
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}
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func TestScanRows(t *testing.T) {
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user1 := User{Name: "ScanRowsUser1", Age: 1}
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user2 := User{Name: "ScanRowsUser2", Age: 10}
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user3 := User{Name: "ScanRowsUser3", Age: 20}
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DB.Save(&user1).Save(&user2).Save(&user3)
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rows, err := DB.Table("users").Where("name = ? or name = ?", user2.Name, user3.Name).Select("name, age").Rows()
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if err != nil {
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t.Errorf("Not error should happen, got %v", err)
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}
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type Result struct {
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Name string
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Age int
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}
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var results []Result
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for rows.Next() {
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var result Result
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if err := DB.ScanRows(rows, &result); err != nil {
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t.Errorf("should get no error, but got %v", err)
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}
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results = append(results, result)
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}
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sort.Slice(results, func(i, j int) bool {
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return strings.Compare(results[i].Name, results[j].Name) <= -1
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})
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if !reflect.DeepEqual(results, []Result{{Name: "ScanRowsUser2", Age: 10}, {Name: "ScanRowsUser3", Age: 20}}) {
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t.Errorf("Should find expected results")
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}
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var ages int
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if err := DB.Table("users").Where("name = ? or name = ?", user2.Name, user3.Name).Select("SUM(age)").Scan(&ages).Error; err != nil || ages != 30 {
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t.Fatalf("failed to scan ages, got error %v, ages: %v", err, ages)
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}
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var name string
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if err := DB.Table("users").Where("name = ?", user2.Name).Select("name").Scan(&name).Error; err != nil || name != user2.Name {
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t.Fatalf("failed to scan ages, got error %v, ages: %v", err, name)
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}
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}
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