88 lines
1.9 KiB
Plaintext
88 lines
1.9 KiB
Plaintext
# 2018-07-18
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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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#
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# Test case for SQLITE_FCNTL_DATA_VERSION
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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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# Construct a database and get its initial data version
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sqlite3 db test.db
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do_test dataversion1-100 {
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db eval {
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CREATE TABLE t1(x);
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INSERT INTO t1(x) VALUES(99);
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SELECT * FROM t1;
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}
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} {99}
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set dv1 [file_control_data_version db main]
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# The data version does not change by ATTACH or by changes to
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# other schemas within the same connection.
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#
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do_test dataversion1-101 {
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db eval {
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ATTACH ':memory:' AS aux1;
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CREATE TABLE aux1.t2(y);
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CREATE TEMP TABLE t3(z);
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}
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file_control_data_version db main
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} $dv1
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# The data version does change when SQL modifies the table
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do_test dataversion1-110 {
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db eval {
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UPDATE t1 SET x=x+1;
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}
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set dv2 [file_control_data_version db]
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expr {$::dv1==$dv2}
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} {0}
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# But the data version is constant if there are changes to other
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# schemas
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set dv1 [file_control_data_version db main]
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do_test dataversion1-120 {
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db eval {
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UPDATE t2 SET y=y+1;
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}
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file_control_data_version db
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} $dv1
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# Changes to the database via another connection are not detected
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# until there is a read transaction.
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#
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sqlite3 db2 test.db
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do_test dataversion1-130 {
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db2 eval {
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SELECT * FROM t1
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}
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} {100}
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do_test dataversion1-131 {
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file_control_data_version db
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} $dv1
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do_test dataversion1-132 {
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db2 eval {
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UPDATE t1 SET x=x+1;
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}
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set dv2 [file_control_data_version db]
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expr {$::dv1==$dv2}
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} {1}
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do_test dataversion1-133 {
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db eval {SELECT * FROM t1}
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set dv2 [file_control_data_version db]
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expr {$::dv1==$dv2}
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} {0}
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finish_test
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