1# 2014-09-25
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#
12# This file contains tests for the "truncate" option in the multiplexor.
13#
14
15set testdir [file dirname $argv0]
16source $testdir/tester.tcl
17set ::testprefix multiplex4
18
19db close
20sqlite3_shutdown
21sqlite3_multiplex_initialize {} 0
22
23# delete all filesl with the base name of $basename
24#
25proc multiplex_delete_db {basename} {
26  foreach file [glob -nocomplain $basename.*] {
27    forcedelete $file
28  }
29}
30
31# Return a sorted list of all files with the base name of $basename.
32# Except, delete all text from the end of $basename through the NNN
33# suffix on the end of the filename.
34#
35proc multiplex_file_list {basename} {
36  set x {}
37  foreach file [glob -nocomplain $basename.*] {
38    regsub "^$basename\\..*(\\d\\d\\d)\$" $file $basename.\\1 file
39    lappend x $file
40  }
41  return [lsort $x]
42}
43
44do_test multiplex4-1.0 {
45  multiplex_delete_db mx4test
46  sqlite3 db {file:mx4test.db?chunksize=10&truncate=1} -uri 1 -vfs multiplex
47  db eval {
48    CREATE TABLE t1(x);
49    INSERT INTO t1(x) VALUES(randomblob(250000));
50  }
51  multiplex_file_list mx4test
52} {mx4test.001 mx4test.db}
53
54do_test multiplex4-1.1 {
55  db eval {
56    DELETE FROM t1;
57    VACUUM;
58  }
59  multiplex_file_list mx4test
60} {mx4test.db}
61
62# NB:  The PRAGMA multiplex_truncate command is implemented using the
63# SQLITE_FCNTL_PRAGMA file-control...
64#
65# EVIDENCE-OF: R-12238-55120 Whenever a PRAGMA statement is parsed, an
66# SQLITE_FCNTL_PRAGMA file control is sent to the open sqlite3_file
67# object corresponding to the database file to which the pragma
68# statement refers.
69#
70do_test multiplex4-1.2 {
71  db eval {PRAGMA multiplex_truncate}
72} {on}
73do_test multiplex4-1.3 {
74  db eval {PRAGMA multiplex_truncate=off}
75} {off}
76do_test multiplex4-1.4 {
77  db eval {PRAGMA multiplex_truncate}
78} {off}
79do_test multiplex4-1.5 {
80  db eval {PRAGMA multiplex_truncate=on}
81} {on}
82do_test multiplex4-1.6 {
83  db eval {PRAGMA multiplex_truncate}
84} {on}
85do_test multiplex4-1.7 {
86  db eval {PRAGMA multiplex_truncate=0}
87} {off}
88do_test multiplex4-1.8 {
89  db eval {PRAGMA multiplex_truncate=1}
90} {on}
91do_test multiplex4-1.9 {
92  db eval {PRAGMA multiplex_truncate=0}
93} {off}
94
95# EVIDENCE-OF: R-26188-08449 If the SQLITE_FCNTL_PRAGMA file control
96# returns SQLITE_OK, then the parser assumes that the VFS has handled
97# the PRAGMA itself and the parser generates a no-op prepared statement
98# if result string is NULL, or that returns a copy of the result string
99# if the string is non-NULL.
100#
101do_test multiplex4-1.9-explain {
102  db eval {EXPLAIN PRAGMA multiplex_truncate=0;}
103} {/String8 \d \d \d off/}
104
105do_test multiplex4-1.10 {
106  db eval {
107    INSERT INTO t1(x) VALUES(randomblob(250000));
108  }
109  multiplex_file_list mx4test
110} {mx4test.001 mx4test.db}
111
112do_test multiplex4-1.11 {
113  db eval {
114    DELETE FROM t1;
115    VACUUM;
116  }
117  multiplex_file_list mx4test
118} {mx4test.001 mx4test.db}
119
120do_test multiplex4-1.12 {
121  db eval {
122    PRAGMA multiplex_truncate=ON;
123    DROP TABLE t1;
124    VACUUM;
125  }
126  multiplex_file_list mx4test
127} {mx4test.db}
128
129catch { db close }
130forcedelete mx4test.db
131sqlite3_multiplex_shutdown
132finish_test
133