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1 # 2012 May 15 | |
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 # The tests in this file are intended to show that closing one database | |
13 # connection to a shared-cache while there exist other connections (a) | |
14 # does not cause the schema to be reloaded and (b) does not cause any | |
15 # other problems. | |
16 # | |
17 | |
18 set testdir [file dirname $argv0] | |
19 source $testdir/tester.tcl | |
20 ifcapable !shared_cache { finish_test ; return } | |
21 set testprefix shared8 | |
22 | |
23 db close | |
24 set ::enable_shared_cache [sqlite3_enable_shared_cache 1] | |
25 do_test 0.0 { sqlite3_enable_shared_cache } {1} | |
26 | |
27 proc roman {n} { | |
28 array set R {1 i 2 ii 3 iii 4 iv 5 v 6 vi 7 vii 8 viii 9 ix 10 x} | |
29 set R($n) | |
30 } | |
31 | |
32 #------------------------------------------------------------------------- | |
33 # The following tests work as follows: | |
34 # | |
35 # 1.0: Open connection [db1] and populate the database. | |
36 # | |
37 # 1.1: Using "PRAGMA writable_schema", destroy the database schema on | |
38 # disk. The schema is still in memory, so it is possible to keep | |
39 # using it, but any attempt to reload it from disk will fail. | |
40 # | |
41 # 1.3-4: Open connection db2. Check that it can see the db schema. Then | |
42 # close db1 and check that db2 still works. This shows that closing | |
43 # db1 did not reset the in-memory schema. | |
44 # | |
45 # 1.5-7: Similar to 1.3-4. | |
46 # | |
47 # 1.8: Close all database connections (deleting the in-memory schema). | |
48 # Then open a new connection and check that it cannot read the db. | |
49 # | |
50 do_test 1.0 { | |
51 sqlite3 db1 test.db | |
52 db1 func roman roman | |
53 execsql { | |
54 CREATE TABLE t1(a, b); | |
55 INSERT INTO t1 VALUES(1, 1); | |
56 INSERT INTO t1 VALUES(2, 2); | |
57 INSERT INTO t1 VALUES(3, 3); | |
58 INSERT INTO t1 VALUES(4, 4); | |
59 CREATE VIEW v1 AS SELECT a, roman(b) FROM t1; | |
60 SELECT * FROM v1; | |
61 } db1 | |
62 } {1 i 2 ii 3 iii 4 iv} | |
63 | |
64 do_test 1.1 { | |
65 execsql { | |
66 PRAGMA writable_schema = 1; | |
67 DELETE FROM sqlite_master WHERE 1; | |
68 PRAGMA writable_schema = 0; | |
69 SELECT * FROM sqlite_master; | |
70 } db1 | |
71 } {} | |
72 | |
73 do_test 1.2 { | |
74 execsql { SELECT * FROM v1 } db1 | |
75 } {1 i 2 ii 3 iii 4 iv} | |
76 | |
77 do_test 1.3 { | |
78 sqlite3 db2 test.db | |
79 db2 func roman roman | |
80 execsql { SELECT * FROM v1 } db2 | |
81 } {1 i 2 ii 3 iii 4 iv} | |
82 | |
83 do_test 1.4 { | |
84 db1 close | |
85 execsql { SELECT * FROM v1 } db2 | |
86 } {1 i 2 ii 3 iii 4 iv} | |
87 | |
88 do_test 1.5 { | |
89 sqlite3 db3 test.db | |
90 db3 func roman roman | |
91 execsql { SELECT * FROM v1 } db3 | |
92 } {1 i 2 ii 3 iii 4 iv} | |
93 | |
94 do_test 1.6 { | |
95 execsql { SELECT * FROM v1 } db2 | |
96 } {1 i 2 ii 3 iii 4 iv} | |
97 | |
98 do_test 1.7 { | |
99 db2 close | |
100 execsql { SELECT * FROM v1 } db3 | |
101 } {1 i 2 ii 3 iii 4 iv} | |
102 | |
103 do_test 1.8 { | |
104 db3 close | |
105 sqlite3 db4 test.db | |
106 catchsql { SELECT * FROM v1 } db4 | |
107 } {1 {no such table: v1}} | |
108 | |
109 | |
110 foreach db {db1 db2 db3 db4} { catch { $db close } } | |
111 sqlite3_enable_shared_cache $::enable_shared_cache | |
112 finish_test | |
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