-
Notifications
You must be signed in to change notification settings - Fork 67
/
savepoint_test.go
327 lines (285 loc) · 7.75 KB
/
savepoint_test.go
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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
// Copyright (c) 2018 David Crawshaw <david@zentus.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
package sqlitex
import (
"context"
"errors"
"io/ioutil"
"path/filepath"
"strings"
"testing"
"crawshaw.io/sqlite"
)
func TestExec(t *testing.T) {
conn, err := sqlite.OpenConn(":memory:", 0)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
if err := Exec(conn, "CREATE TABLE t (c1);", nil); err != nil {
t.Fatal(err)
}
countFn := func() int {
var count int
fn := func(stmt *sqlite.Stmt) error {
count = stmt.ColumnInt(0)
return nil
}
if err := Exec(conn, "SELECT count(*) FROM t;", fn); err != nil {
t.Fatal(err)
}
return count
}
errNoSuccess := errors.New("succeed=false")
insert := func(succeed bool) (err error) {
defer Save(conn)(&err)
if err := Exec(conn, `INSERT INTO t VALUES ("hello");`, nil); err != nil {
t.Fatal(err)
}
if succeed {
return nil
}
return errNoSuccess
}
if err := insert(true); err != nil {
t.Fatal(err)
}
if got := countFn(); got != 1 {
t.Errorf("expecting 1 row, got %d", got)
}
if err := insert(true); err != nil {
t.Fatal(err)
}
if got := countFn(); got != 2 {
t.Errorf("expecting 2 rows, got %d", got)
}
if err := insert(false); err != errNoSuccess {
t.Errorf("expecting insert to fail with errNoSuccess, got %v", err)
}
if got := countFn(); got != 2 {
t.Errorf("expecting 2 rows, got %d", got)
}
}
func TestPanic(t *testing.T) {
conn, err := sqlite.OpenConn(":memory:", 0)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
if err := Exec(conn, "CREATE TABLE t (c1);", nil); err != nil {
t.Fatal(err)
}
if err := Exec(conn, `INSERT INTO t VALUES ("one");`, nil); err != nil {
t.Fatal(err)
}
defer func() {
p := recover()
if p == nil {
t.Errorf("panic expected")
}
if err, isErr := p.(error); !isErr || !strings.Contains(err.Error(), "sqlite") {
t.Errorf("panic is not an sqlite error: %v", err)
}
count := 0
fn := func(stmt *sqlite.Stmt) error {
count = stmt.ColumnInt(0)
return nil
}
if err := Exec(conn, "SELECT count(*) FROM t;", fn); err != nil {
t.Error(err)
}
if count != 1 {
t.Errorf("got %d rows, want 1", count)
}
}()
if err := doPanic(conn); err != nil {
t.Errorf("unexpected error: %v", err)
}
}
func doPanic(conn *sqlite.Conn) (err error) {
defer Save(conn)(&err)
if err := Exec(conn, `INSERT INTO t VALUES ("hello");`, nil); err != nil {
return err
}
conn.Prep("SELECT bad query") // panics
return nil
}
func TestDone(t *testing.T) {
doneCh := make(chan struct{})
conn, err := sqlite.OpenConn(":memory:", 0)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
conn.SetInterrupt(doneCh)
close(doneCh)
relFn := Save(conn)
relFn(&err)
if code := sqlite.ErrCode(err); code != sqlite.SQLITE_INTERRUPT {
t.Errorf("savepoint release function error code is %v, want SQLITE_INTERRUPT", code)
}
}
func TestReleaseTx(t *testing.T) {
conn1, err := sqlite.OpenConn("file::memory:?mode=memory&cache=shared", 0)
if err != nil {
t.Fatal(err)
}
defer conn1.Close()
conn2, err := sqlite.OpenConn("file::memory:?mode=memory&cache=shared", 0)
if err != nil {
t.Fatal(err)
}
defer conn2.Close()
Exec(conn1, "DROP TABLE t;", nil)
if err := Exec(conn1, "CREATE TABLE t (c1);", nil); err != nil {
t.Fatal(err)
}
countFn := func() int {
var count int
fn := func(stmt *sqlite.Stmt) error {
count = stmt.ColumnInt(0)
return nil
}
if err := Exec(conn2, "SELECT count(*) FROM t;", fn); err != nil {
t.Fatal(err)
}
return count
}
errNoSuccess := errors.New("succeed=false")
insert := func(succeed bool) (err error) {
defer Save(conn1)(&err)
if err := Exec(conn1, `INSERT INTO t VALUES ("hello");`, nil); err != nil {
t.Fatal(err)
}
if succeed {
return nil
}
return errNoSuccess
}
if err := insert(true); err != nil {
t.Fatal(err)
}
if got := countFn(); got != 1 {
t.Errorf("expecting 1 row, got %d", got)
}
if err := insert(false); err == nil {
t.Fatal(err)
}
// If the transaction is still open, countFn will get stuck
// on conn2 waiting for conn1's write lock to release.
if got := countFn(); got != 1 {
t.Errorf("expecting 1 row, got %d", got)
}
}
func TestInterruptRollback(t *testing.T) {
conn, err := sqlite.OpenConn("file::memory:?mode=memory&cache=shared", 0)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
if err = ExecScript(conn, `
DROP TABLE IF EXISTS t;
CREATE TABLE t (c);
`); err != nil {
t.Fatal(err)
}
releaseFn := Save(conn)
if err := Exec(conn, `INSERT INTO t (c) VALUES (1);`, nil); err != nil {
t.Fatal(err)
}
releaseFn(&err)
if err != nil {
t.Fatalf("relaseFn err: %v", err)
}
ctx, cancel := context.WithCancel(context.Background())
conn.SetInterrupt(ctx.Done())
releaseFn1 := Save(conn)
if err := Exec(conn, `INSERT INTO t (c) VALUES (2);`, nil); err != nil {
t.Fatal(err)
}
releaseFn2 := Save(conn)
if err := Exec(conn, `INSERT INTO t (c) VALUES (3);`, nil); err != nil {
t.Fatal(err)
}
cancel()
if err := Exec(conn, `INSERT INTO t (c) VALUES (3);`, nil); err == nil || sqlite.ErrCode(err) != sqlite.SQLITE_INTERRUPT {
t.Fatalf("want SQLITE_INTERRUPT, got %v", err)
}
err = context.Canceled
releaseFn2(&err) // given a real error, should rollback
if err != context.Canceled {
t.Fatalf("relaseFn2 err: %v", err)
}
var errNil error
releaseFn1(&errNil) // given no error, but we are interrupted, so should rollback
if errNil == nil {
t.Fatal("relaseFn1 errNil is still nil, should have been set to interrupt")
}
if sqlite.ErrCode(errNil) != sqlite.SQLITE_INTERRUPT {
t.Fatalf("relaseFn1 errNil=%v, want SQLITE_INTERRUPT", errNil)
}
conn.SetInterrupt(nil)
got, err := ResultInt(conn.Prep("SELECT count(*) FROM t;"))
if err != nil {
t.Fatal(err)
}
if got != 1 {
t.Errorf("want 1 row, got %d", got)
}
}
func TestBusySnapshot(t *testing.T) {
dir, err := ioutil.TempDir("", "sqlitex-test-")
if err != nil {
t.Fatal(err)
}
db := filepath.Join(dir, "busysnapshot.db")
// No SQLITE_OPEN_SHAREDCACHE.
flags := sqlite.SQLITE_OPEN_READWRITE | sqlite.SQLITE_OPEN_CREATE | sqlite.SQLITE_OPEN_WAL
conn0, err := sqlite.OpenConn(db, flags)
if err != nil {
t.Fatal(err)
}
defer conn0.Close()
conn1, err := sqlite.OpenConn(db, flags)
if err != nil {
t.Fatal(err)
}
defer conn1.Close()
if err = ExecScript(conn0, `
DROP TABLE IF EXISTS t;
CREATE TABLE t (c, b BLOB);
INSERT INTO t (c, b) VALUES (4, "hi");
`); err != nil {
t.Fatal(err)
}
conn0Release0 := Save(conn0)
c, err := ResultInt(conn0.Prep("SELECT count(*) FROM t WHERE c > 3;"))
if err != nil {
t.Fatal(err)
}
// An insert on conn1 invalidates the deferred transaction on conn0.
if err := Exec(conn1, "INSERT INTO t (c) VALUES (4);", nil); err != nil {
t.Fatal(err)
}
stmt := conn0.Prep("UPDATE t SET c = $c WHERE c = 4;")
stmt.SetInt64("$c", int64(c))
_, conn0Err := stmt.Step()
if sqlite.ErrCode(conn0Err) != sqlite.SQLITE_BUSY_SNAPSHOT {
t.Fatalf("want SQLITE_BUSY_SNAPSHOT, got: %v", conn0Err)
}
conn0Release0(&conn0Err)
if sqlite.ErrCode(conn0Err) != sqlite.SQLITE_BUSY_SNAPSHOT {
t.Fatalf("after savepoint want SQLITE_BUSY_SNAPSHOT, got: %v", conn0Err)
}
}