-
Notifications
You must be signed in to change notification settings - Fork 6
/
snooze-transaction-test.ss
268 lines (245 loc) · 9.53 KB
/
snooze-transaction-test.ss
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
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
#lang scheme/base
(require "test-base.ss")
(require scheme/class
srfi/26
"snooze-api.ss"
"core/core.ss"
"sql/sql.ss")
; Helpers --------------------------------------
; (-> any) -> any
(define (call-with-transaction/rollback thunk)
(letrec ([ans ans]) ; starts out undefined
(with-handlers ([exn:fail? (lambda _ ans)])
(call-with-transaction
(lambda ()
(set! ans (thunk))
(error))))))
(define (call-with-transaction-hook new-hook thunk)
(let ([old-hook (send (current-snooze) get-transaction-hook)])
(dynamic-wind
(lambda ()
(send (current-snooze) set-transaction-hook! new-hook))
thunk
(lambda ()
(send (current-snooze) set-transaction-hook! old-hook)))))
(define-check (check-rev-exn thunk struct)
(let ([exn (with-handlers ([exn:fail:snooze:revision?
(lambda (exn) exn)]
[(lambda _ #t)
(lambda (exn) (fail (format "wrong exn raised: ~s" exn)))])
(thunk)
(fail "no exn raised"))])
(check-equal? (exn:fail:snooze:revision-struct exn) struct)))
; Tests ----------------------------------------
; test-suite
(define/provide-test-suite snooze-transaction-tests
; ***** NOTE *****
; Each test below depends on the tests before it. Add/edit tests at your peril!
; ****************
(test-suite "commit"
(test-case "insert"
(before
(recreate-test-tables)
(let ([p1 (make-person/defaults #:name "A")])
(check-false (find-person #:name "A"))
(let ([p2 (call-with-transaction
(lambda ()
(save! p1)))])
(check snooze-guid=? p2 p1)
(check snooze-data=? p2 p1)
(check-not-equal? p2 p1)
; Check against DB:
(let ([p3 (find-person #:name "A")])
(check snooze-guid=? p3 p1)
(check snooze-data=? p3 p1)
(check-not-equal? p3 p1))))))
(test-case "update"
(before
(recreate-test-tables)
(let ([p1 (save! (make-person/defaults #:name "A"))])
(check-equal? (find-person #:name "A") p1)
(let ([p2 (call-with-transaction
(lambda ()
(save! (person-set p1 #:name "B"))))])
(check snooze-guid=? p2 p1)
(check-false (snooze-data=? p2 p1))
; Check against DB:
(check-false (find-person #:name "A"))
(let ([p3 (find-person #:name "B")])
(check-equal? p3 p2))))))
(test-case "delete"
(before
(recreate-test-tables)
(let ([p1 (save! (make-person/defaults #:name "A"))])
(check-equal? (find-person #:name "A") p1)
(let ([p2 (call-with-transaction
(lambda ()
(delete! (person-set p1 #:name "B"))))])
(check snooze-guid=? p2 p1)
; Check against DB:
(check-false (find-person #:name "A") p2)
(check-false (find-person #:name "B") p2))))))
(test-suite "rollback"
(test-case "insert"
(before
(recreate-test-tables)
(let ([p1 (make-person/defaults #:name "A")])
(check-false (find-person #:name "A"))
(let ([p2 (call-with-transaction/rollback
(lambda ()
(save! p1)))])
(check-false (snooze-struct-saved? p1))
(check-false (snooze-struct-saved? p2))
; Check against DB:
(check-false (find-person #:name "A")))
; Check repeat transaction:
(check-not-exn (cut save! p1)))))
(test-case "update"
(before
(recreate-test-tables)
(let ([p1 (save! (make-person/defaults #:name "A"))])
(check-equal? (find-person #:name "A") p1)
(let ([p2 (call-with-transaction/rollback
(lambda ()
(save! (person-set p1 #:name "B"))))])
(check snooze-guid=? p2 p1)
(check-false (snooze-data=? p2 p1))
; Check against DB:
(check-equal? (find-person #:name "A") p1)
(check-false (find-person #:name "B")))
; Check repeat transaction:
(check-not-exn (cut save! p1)))))
(test-case "delete"
(before
(recreate-test-tables)
(let ([p1 (save! (make-person/defaults #:name "A"))])
(check-equal? (find-person #:name "A") p1)
(let ([p2 (call-with-transaction/rollback
(lambda ()
(delete! (person-set p1 #:name "B"))))])
(check snooze-guid=? p2 p1)
; Check against DB:
(check-equal? (find-person #:name "A") p1)
(check-false (find-person #:name "B")))
; Check repeat transaction:
(check-not-exn (cut save! p1)))))
(test-case "nested transactions"
(before
(recreate-test-tables)
(let ([p1 (save! (make-person/defaults #:name "A"))]
[p2 #f]
[p3 #f])
(with-handlers ([exn? void])
(call-with-transaction
(lambda ()
(set! p2 (save! (person-set p1 #:name "B")))
(call-with-transaction
(lambda ()
(set! p3 (save! (person-set p2 #:name "C")))
(error "aborting transaction"))))))
(check-pred snooze-struct-saved? p1)
(check snooze-guid=? p2 p1)
(check snooze-guid=? p3 p1)
(check-equal? (person-name p1) "A")
(check-equal? (person-name p2) "B")
(check-equal? (person-name p3) "C")
; Check against DB:
(check-equal? (find-person #:name "A") p1)
(check-false (find-person #:name "B"))
(check-false (find-person #:name "C"))
; Check repeat transaction:
(check-rev-exn (cut save! p3) p3)
(check-rev-exn (cut save! p2) p2)
(check-not-exn (cut save! p1)))))
(test-case "inner nested transaction"
(before
(recreate-test-tables)
(let ([p1 (save! (make-person/defaults #:name "A"))]
[p2 #f]
[p3 #f])
(call-with-transaction
(lambda ()
(set! p2 (save! (person-set p1 #:name "B")))
(with-handlers ([exn? void])
(call-with-transaction
(lambda ()
(set! p3 (save! (person-set p2 #:name "C")))
(error "aborting transaction"))))))
(check-pred snooze-struct-saved? p1)
(check snooze-guid=? p2 p1)
(check snooze-guid=? p3 p1)
(check-equal? (person-name p1) "A")
(check-equal? (person-name p2) "B")
(check-equal? (person-name p3) "C")
; Check against DB:
(if (send (send (current-snooze) get-database) supports-nested-transactions?)
(begin (check-false (find-person #:name "A"))
(check-equal? (find-person #:name "B") p2)
(check-false (find-person #:name "C")))
(begin (check-false (find-person #:name "A"))
(check-false (find-person #:name "B"))
(check-equal? (find-person #:name "C") p3)))
; Check repeat transaction:
(if (send (send (current-snooze) get-database) supports-nested-transactions?)
(begin (check-rev-exn (cut save! p1) p1)
(check-rev-exn (cut save! p3) p3)
(check-not-exn (cut save! p2)))
(begin (check-rev-exn (cut save! p1) p1)
(check-rev-exn (cut save! p2) p2)
(check-not-exn (cut save! p3))))))))
(test-case "continuation jumps"
; General continuation jump out:
(define _
(let/cc escape
(call-with-transaction
(lambda ()
(check-exn exn:fail:contract:continuation?
(lambda ()
(escape #f)))))))
; Escape continuation jump out:
(define resume
(check-not-exn
(lambda ()
(let/ec escape
(call-with-transaction
(lambda ()
(let/cc resume
(escape resume))))))))
; General continuation jump in:
(check-exn exn:fail:contract:continuation?
(lambda ()
(resume #f))))
(test-suite "hooks"
(test-case "called"
(before
(recreate-test-tables)
(let ([num-transactions 0])
(call-with-transaction-hook
(lambda (continue conn . args)
(set! num-transactions (add1 num-transactions))
(apply continue conn args))
(lambda ()
(delete! (save! (make-person/defaults #:name "Dave")))))
(check-equal? num-transactions 2))))
(test-case "abort before body"
(before
(recreate-test-tables)
(call-with-transaction-hook
(lambda (continue conn . args)
(error "escaping")
(apply continue conn args))
(lambda ()
(with-handlers ([exn? void])
(save! (make-person/defaults #:name "Dave")))))
(check-pred null? (find-people))))
(test-case "abort after body"
(before
(recreate-test-tables)
(call-with-transaction-hook
(lambda (continue conn . args)
(begin0 (apply continue conn args)
(error "escaping")))
(lambda ()
(with-handlers ([exn? void])
(save! (make-person/defaults #:name "Dave")))))
(check-pred null? (find-people))))))