wasCSharpSQLite – Blame information for rev 1

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1 office 1 # 2010 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 testing the sqlite3_unlock_notify() API.
13 #
14  
15 set testdir [file dirname $argv0]
16 source $testdir/tester.tcl
17  
18 # This script only runs if shared-cache and unlock-notify are available.
19 #
20 ifcapable !unlock_notify||!shared_cache {
21 finish_test
22 return
23 }
24  
25 set esc [sqlite3_enable_shared_cache 1]
26  
27 sqlite3 db test.db
28 file delete -force test.db2 test.db2-journal test.db2-wal
29 sqlite3 db2 test.db2
30  
31 do_test notify3-1.1 {
32 execsql {
33 CREATE TABLE t1(a, b);
34 INSERT INTO t1 VALUES('t1 A', 't1 B');
35 }
36 } {}
37 do_test notify3-1.2 {
38 execsql {
39 CREATE TABLE t2(a, b);
40 INSERT INTO t2 VALUES('t2 A', 't2 B');
41 } db2
42 } {}
43  
44 do_test notify3-1.3 {
45 execsql {
46 BEGIN EXCLUSIVE;
47 INSERT INTO t2 VALUES('t2 C', 't2 D');
48 } db2
49 } {}
50 do_test notify3-1.4 {
51 catchsql { ATTACH 'test.db2' AS aux }
52 } {0 {}}
53  
54 do_test notify3-1.5 {
55 catchsql { SELECT * FROM t2 }
56 } {1 {database schema is locked: aux}}
57  
58 do_test notify3-1.6 {
59 list [sqlite3_errcode db] [sqlite3_extended_errcode db]
60 } {SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE}
61  
62 do_test notify3-1.7 {
63 sqlite3_extended_result_codes db 1
64 catch { set ::stmt [sqlite3_prepare_v2 db "SELECT * FROM t2" -1 tail] } msg
65 set msg
66 } {(262) database schema is locked: aux}
67  
68 do_test notify3-1.8 {
69 set ::when 1
70 db unlock_notify { set ::res $::when }
71 set ::when 2
72 execsql { COMMIT } db2
73 set ::res
74 } {2}
75 do_test notify3-1.9 {
76 catchsql { SELECT * FROM t2 }
77 } {0 {{t2 A} {t2 B} {t2 C} {t2 D}}}
78 db close
79  
80  
81 set err {{1 {unable to open database: test.db2}}}
82 set noerr {{0 {}}}
83  
84 # When a new database is attached, the connection doing the attaching
85 # tries to load any unloaded schemas for both the new database and any
86 # already attached databases (including the main database). If it is
87 # unable to load any such schemas, then the ATTACH statement fails.
88 #
89 # This block tests that if the loading of schemas as a result of an
90 # ATTACH fails due to locks on the schema table held by other shared-cache
91 # connections the extended error code is SQLITE_LOCKED_SHAREDCACHE and
92 # it is possible to use the unlock-notify mechanism to determine when
93 # the ATTACH might succeed.
94 #
95 # This test does not work for test-permutations that specify SQL to
96 # be executed as part of the [sqlite3] command that opens the database.
97 # Executing such SQL causes SQLite to load the database schema into memory
98 # earlier than expected, causing test cases to fail.
99 #
100 if {[presql] == ""} {
101 foreach {
102 tn
103 db1_loaded
104 db2_loaded
105 enable_extended_errors
106 result
107 error1 error2
108 } "
109  
110 1 0 0 1 $err SQLITE_LOCKED_SHAREDCACHE SQLITE_LOCKED_SHAREDCACHE
111 2 0 1 0 $err SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE
112 3 0 1 1 $err SQLITE_LOCKED_SHAREDCACHE SQLITE_LOCKED_SHAREDCACHE
113 4 1 0 0 $err SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE
114 5 1 0 1 $err SQLITE_LOCKED_SHAREDCACHE SQLITE_LOCKED_SHAREDCACHE
115 6 1 1 0 $noerr SQLITE_OK SQLITE_OK
116 7 1 1 1 $noerr SQLITE_OK SQLITE_OK
117 " {
118  
119 do_test notify3-2.$tn.1 {
120 catch { db1 close }
121 catch { db2 close }
122 sqlite3 db1 test.db
123 sqlite3 db2 test.db2
124  
125 sqlite3_extended_result_codes db1 $enable_extended_errors
126 sqlite3_extended_result_codes db2 $enable_extended_errors
127  
128 if { $db1_loaded } { db1 eval "SELECT * FROM sqlite_master" }
129 if { $db2_loaded } { db2 eval "SELECT * FROM sqlite_master" }
130  
131 db2 eval "BEGIN EXCLUSIVE"
132 catchsql "ATTACH 'test.db2' AS two" db1
133 } $result
134  
135 do_test notify3-2.$tn.2 {
136 list [sqlite3_errcode db1] [sqlite3_extended_errcode db1]
137 } [list $error1 $error2]
138  
139 do_test notify3-2.$tn.3 {
140 db1 unlock_notify {set invoked 1}
141 set invoked 0
142 db2 eval commit
143 set invoked
144 } [lindex $result 0]
145 }
146 }
147 catch { db1 close }
148 catch { db2 close }
149  
150  
151 sqlite3_enable_shared_cache $esc
152 finish_test
153