xref: /sqlite-3.40.0/test/rollback.test (revision 9a243e69) 
1# 2004 June 30
2#
3# The author disclaims copyright to this source code.  In place of
4# a legal notice, here is a blessing:
5#
6#    May you do good and not evil.
7#    May you find forgiveness for yourself and forgive others.
8#    May you share freely, never taking more than you give.
9#
10#***********************************************************************
11# This file implements regression tests for SQLite library.  The
12# focus of this file is verifying that a rollback in one statement
13# caused by an ON CONFLICT ROLLBACK clause aborts any other pending
14# statements.
15#
16# $Id: rollback.test,v 1.11 2009/06/26 07:12:07 danielk1977 Exp $
17
18set testdir [file dirname $argv0]
19source $testdir/tester.tcl
20
21set DB [sqlite3_connection_pointer db]
22
23do_test rollback-1.1 {
24  execsql {
25    CREATE TABLE t1(a);
26    INSERT INTO t1 VALUES(1);
27    INSERT INTO t1 VALUES(2);
28    INSERT INTO t1 VALUES(3);
29    INSERT INTO t1 VALUES(4);
30    SELECT * FROM t1;
31  }
32} {1 2 3 4}
33
34ifcapable conflict {
35  do_test rollback-1.2 {
36    execsql {
37      CREATE TABLE t3(a unique on conflict rollback);
38      INSERT INTO t3 SELECT a FROM t1;
39      BEGIN;
40      INSERT INTO t1 SELECT * FROM t1;
41    }
42  } {}
43}
44do_test rollback-1.3 {
45  set STMT [sqlite3_prepare $DB "SELECT a FROM t1" -1 TAIL]
46  sqlite3_step $STMT
47} {SQLITE_ROW}
48
49ifcapable conflict {
50  # This causes a ROLLBACK, which deletes the table out from underneath the
51  # SELECT statement.
52  #
53  do_test rollback-1.4 {
54    catchsql {
55      INSERT INTO t3 SELECT a FROM t1;
56    }
57  } {1 {UNIQUE constraint failed: t3.a}}
58
59  # Try to continue with the SELECT statement
60  #
61  do_test rollback-1.5 {
62    sqlite3_step $STMT
63  } {SQLITE_ROW}
64
65  # Restart the SELECT statement
66  #
67  do_test rollback-1.6 { sqlite3_reset $STMT } {SQLITE_OK}
68} else {
69  do_test rollback-1.6 { sqlite3_reset $STMT } {SQLITE_OK}
70}
71
72do_test rollback-1.7 {
73  sqlite3_step $STMT
74} {SQLITE_ROW}
75do_test rollback-1.8 {
76  sqlite3_step $STMT
77} {SQLITE_ROW}
78do_test rollback-1.9 {
79  sqlite3_finalize $STMT
80} {SQLITE_OK}
81
82if {$tcl_platform(platform) == "unix"
83 && [permutation] ne "onefile"
84 && [permutation] ne "inmemory_journal"
85 && [permutation] ne "atomic-batch-write"
86} {
87  do_test rollback-2.1 {
88    execsql {
89      BEGIN;
90      INSERT INTO t3 VALUES('hello world');
91    }
92    forcecopy test.db testA.db
93    forcecopy test.db-journal testA.db-journal
94    execsql {
95      COMMIT;
96    }
97  } {}
98
99  # At this point files testA.db and testA.db-journal are present in the
100  # file system. This block adds a master-journal file pointer to the
101  # end of testA.db-journal. The master-journal file does not exist.
102  #
103  set mj [file normalize testA.db-mj-123]
104  binary scan $mj c* a
105  set cksum 0
106  foreach i $a { incr cksum $i }
107  set mj_pgno [expr $sqlite_pending_byte / 1024]
108  set zAppend [binary format Ia*IIa8 $mj_pgno $mj [string length $mj] $cksum \
109    "\xd9\xd5\x05\xf9\x20\xa1\x63\xd7"
110  ]
111  set iOffset [expr (([file size testA.db-journal] + 511)/512)*512]
112  set fd [open testA.db-journal a+]
113  fconfigure $fd -encoding binary -translation binary
114  seek $fd $iOffset
115  puts -nonewline $fd $zAppend
116
117  # Also, fix the first journal-header in the journal-file. Because the
118  # journal file has not yet been synced, the 8-byte magic string at the
119  # start of the first journal-header has not been written by SQLite.
120  # So write it now.
121  seek $fd 0
122  puts -nonewline $fd "\xd9\xd5\x05\xf9\x20\xa1\x63\xd7"
123  close $fd
124
125  # Open a handle on testA.db and use it to query the database. At one
126  # point the first query would attempt a hot rollback, attempt to open
127  # the master-journal file and return SQLITE_CANTOPEN when it could not
128  # be opened. This is incorrect, it should simply delete the journal
129  # file and proceed with the query.
130  #
131  do_test rollback-2.2 {
132    sqlite3 db2 testA.db
133    execsql {
134      SELECT distinct tbl_name FROM sqlite_master;
135    } db2
136  } {t1 t3}
137  if {[lsearch {exclusive persistent_journal no_journal} [permutation]]<0} {
138    do_test rollback-2.3 {
139      file exists testA.db-journal
140    } 0
141  }
142  do_test rollback-2.4 {
143    execsql {
144      SELECT distinct tbl_name FROM sqlite_master;
145    } db2
146  } {t1 t3}
147
148  db2 close
149}
150
151finish_test
152