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1 # 2006 July 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 # This file implements regression tests for SQLite library. The focus | |
12 # of this test is reading and writing to the database from within a | |
13 # virtual table xSync() callback. | |
14 # | |
15 # $Id: vtab7.test,v 1.4 2007/12/04 16:54:53 drh Exp $ | |
16 | |
17 set testdir [file dirname $argv0] | |
18 source $testdir/tester.tcl | |
19 | |
20 ifcapable !vtab { | |
21 finish_test | |
22 return | |
23 } | |
24 | |
25 # Register the echo module. Code inside the echo module appends elements | |
26 # to the global tcl list variable ::echo_module whenever SQLite invokes | |
27 # certain module callbacks. This includes the xSync(), xCommit() and | |
28 # xRollback() callbacks. For each of these callback, two elements are | |
29 # appended to ::echo_module, as follows: | |
30 # | |
31 # Module method Elements appended to ::echo_module | |
32 # ------------------------------------------------------- | |
33 # xSync() xSync echo($tablename) | |
34 # xCommit() xCommit echo($tablename) | |
35 # xRollback() xRollback echo($tablename) | |
36 # ------------------------------------------------------- | |
37 # | |
38 # In each case, $tablename is replaced by the name of the real table (not | |
39 # the echo table). By setting up a tcl trace on the ::echo_module variable, | |
40 # code in this file arranges for a Tcl script to be executed from within | |
41 # the echo module xSync() callback. | |
42 # | |
43 register_echo_module [sqlite3_connection_pointer db] | |
44 trace add variable ::echo_module write echo_module_trace | |
45 | |
46 # This Tcl proc is invoked whenever the ::echo_module variable is written. | |
47 # | |
48 proc echo_module_trace {args} { | |
49 # Filter out writes to ::echo_module that are not xSync, xCommit or | |
50 # xRollback callbacks. | |
51 if {[llength $::echo_module] < 2} return | |
52 set x [lindex $::echo_module end-1] | |
53 if {$x ne "xSync" && $x ne "xCommit" && $x ne "xRollback"} return | |
54 | |
55 regexp {^echo.(.*).$} [lindex $::echo_module end] dummy tablename | |
56 # puts "Ladies and gentlemen, an $x on $tablename!" | |
57 | |
58 if {[info exists ::callbacks($x,$tablename)]} { | |
59 eval $::callbacks($x,$tablename) | |
60 } | |
61 } | |
62 | |
63 # The following tests, vtab7-1.*, test that the trace callback on | |
64 # ::echo_module is providing the expected tcl callbacks. | |
65 do_test vtab7-1.1 { | |
66 execsql { | |
67 CREATE TABLE abc(a, b, c); | |
68 CREATE VIRTUAL TABLE abc2 USING echo(abc); | |
69 } | |
70 } {} | |
71 | |
72 do_test vtab7-1.2 { | |
73 set ::callbacks(xSync,abc) {incr ::counter} | |
74 set ::counter 0 | |
75 execsql { | |
76 INSERT INTO abc2 VALUES(1, 2, 3); | |
77 } | |
78 set ::counter | |
79 } {1} | |
80 | |
81 # Write to an existing database table from within an xSync callback. | |
82 do_test vtab7-2.1 { | |
83 set ::callbacks(xSync,abc) { | |
84 execsql {INSERT INTO log VALUES('xSync');} | |
85 } | |
86 execsql { | |
87 CREATE TABLE log(msg); | |
88 INSERT INTO abc2 VALUES(4, 5, 6); | |
89 SELECT * FROM log; | |
90 } | |
91 } {xSync} | |
92 do_test vtab7-2.3 { | |
93 execsql { | |
94 INSERT INTO abc2 VALUES(4, 5, 6); | |
95 SELECT * FROM log; | |
96 } | |
97 } {xSync xSync} | |
98 do_test vtab7-2.4 { | |
99 execsql { | |
100 INSERT INTO abc2 VALUES(4, 5, 6); | |
101 SELECT * FROM log; | |
102 } | |
103 } {xSync xSync xSync} | |
104 | |
105 # Create a database table from within xSync callback. | |
106 do_test vtab7-2.5 { | |
107 set ::callbacks(xSync,abc) { | |
108 execsql { CREATE TABLE newtab(d, e, f); } | |
109 } | |
110 execsql { | |
111 INSERT INTO abc2 VALUES(1, 2, 3); | |
112 SELECT name FROM sqlite_master ORDER BY name; | |
113 } | |
114 } {abc abc2 log newtab} | |
115 | |
116 # Drop a database table from within xSync callback. | |
117 # This is not allowed. Tables cannot be dropped while | |
118 # any other statement is active. | |
119 # | |
120 do_test vtab7-2.6 { | |
121 set ::callbacks(xSync,abc) { | |
122 set ::rc [catchsql { DROP TABLE newtab }] | |
123 } | |
124 execsql { | |
125 INSERT INTO abc2 VALUES(1, 2, 3); | |
126 SELECT name FROM sqlite_master ORDER BY name; | |
127 } | |
128 } {abc abc2 log newtab} | |
129 do_test vtab7-2.6.1 { | |
130 set ::rc | |
131 } {1 {database table is locked}} | |
132 execsql {DROP TABLE newtab} | |
133 | |
134 # Write to an attached database from xSync(). | |
135 ifcapable attach { | |
136 do_test vtab7-3.1 { | |
137 forcedelete test2.db | |
138 forcedelete test2.db-journal | |
139 execsql { | |
140 ATTACH 'test2.db' AS db2; | |
141 CREATE TABLE db2.stuff(description, shape, color); | |
142 } | |
143 set ::callbacks(xSync,abc) { | |
144 execsql { INSERT INTO db2.stuff VALUES('abc', 'square', 'green'); } | |
145 } | |
146 execsql { | |
147 INSERT INTO abc2 VALUES(1, 2, 3); | |
148 SELECT * from stuff; | |
149 } | |
150 } {abc square green} | |
151 } | |
152 | |
153 # UPDATE: The next test passes, but leaks memory. So leave it out. | |
154 # | |
155 # The following tests test that writing to the database from within | |
156 # the xCommit callback causes a misuse error. | |
157 # do_test vtab7-4.1 { | |
158 # unset -nocomplain ::callbacks(xSync,abc) | |
159 # set ::callbacks(xCommit,abc) { | |
160 # execsql { INSERT INTO log VALUES('hello') } | |
161 # } | |
162 # catchsql { | |
163 # INSERT INTO abc2 VALUES(1, 2, 3); | |
164 # } | |
165 # } {1 {library routine called out of sequence}} | |
166 | |
167 # These tests, vtab7-4.*, test that an SQLITE_LOCKED error is returned | |
168 # if an attempt to write to a virtual module table or create a new | |
169 # virtual table from within an xSync() callback. | |
170 do_test vtab7-4.1 { | |
171 execsql { | |
172 CREATE TABLE def(d, e, f); | |
173 CREATE VIRTUAL TABLE def2 USING echo(def); | |
174 } | |
175 set ::callbacks(xSync,abc) { | |
176 set ::error [catchsql { INSERT INTO def2 VALUES(1, 2, 3) }] | |
177 } | |
178 execsql { | |
179 INSERT INTO abc2 VALUES(1, 2, 3); | |
180 } | |
181 set ::error | |
182 } {1 {database table is locked}} | |
183 do_test vtab7-4.2 { | |
184 set ::callbacks(xSync,abc) { | |
185 set ::error [catchsql { CREATE VIRTUAL TABLE def3 USING echo(def) }] | |
186 } | |
187 execsql { | |
188 INSERT INTO abc2 VALUES(1, 2, 3); | |
189 } | |
190 set ::error | |
191 } {1 {database table is locked}} | |
192 | |
193 do_test vtab7-4.3 { | |
194 set ::callbacks(xSync,abc) { | |
195 set ::error [catchsql { DROP TABLE def2 }] | |
196 } | |
197 execsql { | |
198 INSERT INTO abc2 VALUES(1, 2, 3); | |
199 SELECT name FROM sqlite_master ORDER BY name; | |
200 } | |
201 set ::error | |
202 } {1 {database table is locked}} | |
203 | |
204 trace remove variable ::echo_module write echo_module_trace | |
205 unset -nocomplain ::callbacks | |
206 | |
207 finish_test | |
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