1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
package gorm_test
import (
"errors"
"reflect"
"testing"
"github.com/jinzhu/gorm"
)
func (s *Product) BeforeCreate() (err error) {
if s.Code == "Invalid" {
err = errors.New("invalid product")
}
s.BeforeCreateCallTimes = s.BeforeCreateCallTimes + 1
return
}
func (s *Product) BeforeUpdate() (err error) {
if s.Code == "dont_update" {
err = errors.New("can't update")
}
s.BeforeUpdateCallTimes = s.BeforeUpdateCallTimes + 1
return
}
func (s *Product) BeforeSave() (err error) {
if s.Code == "dont_save" {
err = errors.New("can't save")
}
s.BeforeSaveCallTimes = s.BeforeSaveCallTimes + 1
return
}
func (s *Product) AfterFind() {
s.AfterFindCallTimes = s.AfterFindCallTimes + 1
}
func (s *Product) AfterCreate(tx *gorm.DB) {
tx.Model(s).UpdateColumn(Product{AfterCreateCallTimes: s.AfterCreateCallTimes + 1})
}
func (s *Product) AfterUpdate() {
s.AfterUpdateCallTimes = s.AfterUpdateCallTimes + 1
}
func (s *Product) AfterSave() (err error) {
if s.Code == "after_save_error" {
err = errors.New("can't save")
}
s.AfterSaveCallTimes = s.AfterSaveCallTimes + 1
return
}
func (s *Product) BeforeDelete() (err error) {
if s.Code == "dont_delete" {
err = errors.New("can't delete")
}
s.BeforeDeleteCallTimes = s.BeforeDeleteCallTimes + 1
return
}
func (s *Product) AfterDelete() (err error) {
if s.Code == "after_delete_error" {
err = errors.New("can't delete")
}
s.AfterDeleteCallTimes = s.AfterDeleteCallTimes + 1
return
}
func (s *Product) GetCallTimes() []int64 {
return []int64{s.BeforeCreateCallTimes, s.BeforeSaveCallTimes, s.BeforeUpdateCallTimes, s.AfterCreateCallTimes, s.AfterSaveCallTimes, s.AfterUpdateCallTimes, s.BeforeDeleteCallTimes, s.AfterDeleteCallTimes, s.AfterFindCallTimes}
}
func TestRunCallbacks(t *testing.T) {
p := Product{Code: "unique_code", Price: 100}
DB.Save(&p)
if !reflect.DeepEqual(p.GetCallTimes(), []int64{1, 1, 0, 1, 1, 0, 0, 0, 0}) {
t.Errorf("Callbacks should be invoked successfully, %v", p.GetCallTimes())
}
DB.Where("Code = ?", "unique_code").First(&p)
if !reflect.DeepEqual(p.GetCallTimes(), []int64{1, 1, 0, 1, 0, 0, 0, 0, 1}) {
t.Errorf("After callbacks values are not saved, %v", p.GetCallTimes())
}
p.Price = 200
DB.Save(&p)
if !reflect.DeepEqual(p.GetCallTimes(), []int64{1, 2, 1, 1, 1, 1, 0, 0, 1}) {
t.Errorf("After update callbacks should be invoked successfully, %v", p.GetCallTimes())
}
var products []Product
DB.Find(&products, "code = ?", "unique_code")
if products[0].AfterFindCallTimes != 2 {
t.Errorf("AfterFind callbacks should work with slice")
}
DB.Where("Code = ?", "unique_code").First(&p)
if !reflect.DeepEqual(p.GetCallTimes(), []int64{1, 2, 1, 1, 0, 0, 0, 0, 2}) {
t.Errorf("After update callbacks values are not saved, %v", p.GetCallTimes())
}
DB.Delete(&p)
if !reflect.DeepEqual(p.GetCallTimes(), []int64{1, 2, 1, 1, 0, 0, 1, 1, 2}) {
t.Errorf("After delete callbacks should be invoked successfully, %v", p.GetCallTimes())
}
if DB.Where("Code = ?", "unique_code").First(&p).Error == nil {
t.Errorf("Can't find a deleted record")
}
}
func TestCallbacksWithErrors(t *testing.T) {
p := Product{Code: "Invalid", Price: 100}
if DB.Save(&p).Error == nil {
t.Errorf("An error from before create callbacks happened when create with invalid value")
}
if DB.Where("code = ?", "Invalid").First(&Product{}).Error == nil {
t.Errorf("Should not save record that have errors")
}
if DB.Save(&Product{Code: "dont_save", Price: 100}).Error == nil {
t.Errorf("An error from after create callbacks happened when create with invalid value")
}
p2 := Product{Code: "update_callback", Price: 100}
DB.Save(&p2)
p2.Code = "dont_update"
if DB.Save(&p2).Error == nil {
t.Errorf("An error from before update callbacks happened when update with invalid value")
}
if DB.Where("code = ?", "update_callback").First(&Product{}).Error != nil {
t.Errorf("Record Should not be updated due to errors happened in before update callback")
}
if DB.Where("code = ?", "dont_update").First(&Product{}).Error == nil {
t.Errorf("Record Should not be updated due to errors happened in before update callback")
}
p2.Code = "dont_save"
if DB.Save(&p2).Error == nil {
t.Errorf("An error from before save callbacks happened when update with invalid value")
}
p3 := Product{Code: "dont_delete", Price: 100}
DB.Save(&p3)
if DB.Delete(&p3).Error == nil {
t.Errorf("An error from before delete callbacks happened when delete")
}
if DB.Where("Code = ?", "dont_delete").First(&p3).Error != nil {
t.Errorf("An error from before delete callbacks happened")
}
p4 := Product{Code: "after_save_error", Price: 100}
DB.Save(&p4)
if err := DB.First(&Product{}, "code = ?", "after_save_error").Error; err == nil {
t.Errorf("Record should be reverted if get an error in after save callback")
}
p5 := Product{Code: "after_delete_error", Price: 100}
DB.Save(&p5)
if err := DB.First(&Product{}, "code = ?", "after_delete_error").Error; err != nil {
t.Errorf("Record should be found")
}
DB.Delete(&p5)
if err := DB.First(&Product{}, "code = ?", "after_delete_error").Error; err != nil {
t.Errorf("Record shouldn't be deleted because of an error happened in after delete callback")
}
}
func TestGetCallback(t *testing.T) {
scope := DB.NewScope(nil)
if DB.Callback().Create().Get("gorm:test_callback") != nil {
t.Errorf("`gorm:test_callback` should be nil")
}
DB.Callback().Create().Register("gorm:test_callback", func(scope *gorm.Scope) { scope.Set("gorm:test_callback_value", 1) })
callback := DB.Callback().Create().Get("gorm:test_callback")
if callback == nil {
t.Errorf("`gorm:test_callback` should be non-nil")
}
callback(scope)
if v, ok := scope.Get("gorm:test_callback_value"); !ok || v != 1 {
t.Errorf("`gorm:test_callback_value` should be `1, true` but `%v, %v`", v, ok)
}
DB.Callback().Create().Replace("gorm:test_callback", func(scope *gorm.Scope) { scope.Set("gorm:test_callback_value", 2) })
callback = DB.Callback().Create().Get("gorm:test_callback")
if callback == nil {
t.Errorf("`gorm:test_callback` should be non-nil")
}
callback(scope)
if v, ok := scope.Get("gorm:test_callback_value"); !ok || v != 2 {
t.Errorf("`gorm:test_callback_value` should be `2, true` but `%v, %v`", v, ok)
}
DB.Callback().Create().Remove("gorm:test_callback")
if DB.Callback().Create().Get("gorm:test_callback") != nil {
t.Errorf("`gorm:test_callback` should be nil")
}
DB.Callback().Create().Register("gorm:test_callback", func(scope *gorm.Scope) { scope.Set("gorm:test_callback_value", 3) })
callback = DB.Callback().Create().Get("gorm:test_callback")
if callback == nil {
t.Errorf("`gorm:test_callback` should be non-nil")
}
callback(scope)
if v, ok := scope.Get("gorm:test_callback_value"); !ok || v != 3 {
t.Errorf("`gorm:test_callback_value` should be `3, true` but `%v, %v`", v, ok)
}
}
func TestUseDefaultCallback(t *testing.T) {
createCallbackName := "gorm:test_use_default_callback_for_create"
gorm.DefaultCallback.Create().Register(createCallbackName, func(*gorm.Scope) {
// nop
})
if gorm.DefaultCallback.Create().Get(createCallbackName) == nil {
t.Errorf("`%s` expected non-nil, but got nil", createCallbackName)
}
gorm.DefaultCallback.Create().Remove(createCallbackName)
if gorm.DefaultCallback.Create().Get(createCallbackName) != nil {
t.Errorf("`%s` expected nil, but got non-nil", createCallbackName)
}
updateCallbackName := "gorm:test_use_default_callback_for_update"
scopeValueName := "gorm:test_use_default_callback_for_update_value"
gorm.DefaultCallback.Update().Register(updateCallbackName, func(scope *gorm.Scope) {
scope.Set(scopeValueName, 1)
})
gorm.DefaultCallback.Update().Replace(updateCallbackName, func(scope *gorm.Scope) {
scope.Set(scopeValueName, 2)
})
scope := DB.NewScope(nil)
callback := gorm.DefaultCallback.Update().Get(updateCallbackName)
callback(scope)
if v, ok := scope.Get(scopeValueName); !ok || v != 2 {
t.Errorf("`%s` should be `2, true` but `%v, %v`", scopeValueName, v, ok)
}
}
|
