mirror of https://github.com/sqlite/sqlite
83 lines
2.3 KiB
Plaintext
83 lines
2.3 KiB
Plaintext
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# 2016 November 18
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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 snapshot2
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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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#-------------------------------------------------------------------------
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# Check that it is not possible to obtain a snapshot immediately after
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# a wal mode database with an empty wal file is opened. But it is after
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# the file has been written, even by some other connection.
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#
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do_execsql_test 1.0 {
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PRAGMA journal_mode = wal;
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CREATE TABLE t1(a, b, c);
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INSERT INTO t1 VALUES(1, 2, 3);
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INSERT INTO t1 VALUES(4, 5, 6);
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} {wal}
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db close
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do_test 1.1.1 { list [file exists test.db] [file exists test.db-wal] } {1 0}
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sqlite3 db test.db
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do_execsql_test 1.1.2 { SELECT * FROM t1 } {1 2 3 4 5 6}
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do_test 1.1.3 {
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execsql BEGIN
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list [catch { sqlite3_snapshot_get_blob db main } msg] $msg
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} {1 SQLITE_ERROR}
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execsql COMMIT
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do_test 1.1.4 {
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execsql { INSERT INTO t1 VALUES(7, 8, 9) }
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execsql BEGIN
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string length [sqlite3_snapshot_get_blob db main]
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} 48
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execsql COMMIT
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db close
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do_test 1.2.1 { list [file exists test.db] [file exists test.db-wal] } {1 0}
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sqlite3 db test.db
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do_execsql_test 1.2.2 { SELECT * FROM t1 } {1 2 3 4 5 6 7 8 9}
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do_test 1.2.3 {
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execsql BEGIN
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list [catch { sqlite3_snapshot_get_blob db main } msg] $msg
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} {1 SQLITE_ERROR}
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execsql COMMIT
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do_test 1.2.4 {
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sqlite3 db2 test.db
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execsql { INSERT INTO t1 VALUES(10, 11, 12) } db2
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execsql BEGIN
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string length [sqlite3_snapshot_get_blob db main]
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} 48
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execsql COMMIT
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db2 close
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finish_test
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