f5778751f7
API to read from old database snapshots. FossilOrigin-Name: 535155be584ad8c1836e6b1c62de836d9872056d39608c995221c928cb5b365d
76 lines
1.7 KiB
Plaintext
76 lines
1.7 KiB
Plaintext
# 2018 August 28
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The focus
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# of this file is the sqlite3_snapshot_xxx() APIs.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable !snapshot {finish_test; return}
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set testprefix snapshot4
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# This test does not work with the inmemory_journal permutation. The reason
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# is that each connection opened as part of this permutation executes
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# "PRAGMA journal_mode=memory", which fails if the database is in wal mode
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# and there are one or more existing connections.
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if {[permutation]=="inmemory_journal"} {
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finish_test
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return
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}
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sqlite3 db2 test.db
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do_execsql_test 1.0 {
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PRAGMA cache_size = 10;
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, randomblob(400));
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PRAGMA journal_mode = wal;
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WITH s(i) AS (
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SELECT 2 UNION ALL SELECT i+1 FROM s WHERE i<100
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)
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INSERT INTO t1 SELECT i, randomblob(400) FROM s;
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} {wal}
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do_test 1.1 {
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execsql {
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BEGIN;
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SELECT count(*) FROM t1;
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}
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} {100}
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do_test 1.2 {
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db2 eval {
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SELECT count(*) FROM t1;
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CREATE TABLE t2(x);
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}
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} {100}
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do_test 1.3 {
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set ::snap [sqlite3_snapshot_get_blob db main]
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db2 eval { PRAGMA wal_checkpoint }
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} {0 54 52}
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do_test 1.4 {
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execsql {
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COMMIT;
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SELECT * FROM sqlite_master;
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BEGIN;
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}
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sqlite3_snapshot_open_blob db main $::snap
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execsql {
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SELECT count(*) FROM t1
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}
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} {100}
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finish_test
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