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1 # 2011 December 20 | |
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 script testing the ability of SQLite to handle database | |
13 # files larger than 4GB. | |
14 # | |
15 | |
16 if {[file exists skip-big-file]} return | |
17 if {$tcl_platform(os)=="Darwin"} return | |
18 | |
19 set testdir [file dirname $argv0] | |
20 source $testdir/tester.tcl | |
21 set testprefix bigfile2 | |
22 | |
23 # Create a small database. | |
24 # | |
25 do_execsql_test 1.1 { | |
26 CREATE TABLE t1(a, b); | |
27 INSERT INTO t1 VALUES(1, 2); | |
28 } | |
29 | |
30 # Pad the file out to 4GB in size. Then clear the file-size field in the | |
31 # db header. This will cause SQLite to assume that the first 4GB of pages | |
32 # are actually in use and new pages will be appended to the file. | |
33 # | |
34 db close | |
35 if {[catch {fake_big_file 4096 [get_pwd]/test.db} msg]} { | |
36 puts "**** Unable to create a file larger than 4096 MB. *****" | |
37 finish_test | |
38 return | |
39 } | |
40 hexio_write test.db 28 00000000 | |
41 | |
42 do_test 1.2 { | |
43 file size test.db | |
44 } [expr 14 + 4096 * (1<<20)] | |
45 | |
46 # Now insert a large row. The overflow pages will be located past the 4GB | |
47 # boundary. Then, after opening and closing the database, test that the row | |
48 # can be read back in. | |
49 # | |
50 set str [string repeat k 30000] | |
51 do_test 1.3 { | |
52 sqlite3 db test.db | |
53 execsql { INSERT INTO t1 VALUES(3, $str) } | |
54 db close | |
55 sqlite3 db test.db | |
56 db one { SELECT b FROM t1 WHERE a = 3 } | |
57 } $str | |
58 | |
59 db close | |
60 delete_file test.db | |
61 | |
62 finish_test | |
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