157 lines
4.0 KiB
Plaintext
157 lines
4.0 KiB
Plaintext
# 2014 November 12
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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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# This file containst tests to verify that ROLLBACK or ROLLBACK TO
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# operations interact correctly with ongoing SELECT statements.
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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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set ::testprefix rollback2
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proc int2hex {i} { format %.2X $i }
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db func int2hex int2hex
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do_execsql_test 1.0 {
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SELECT int2hex(0), int2hex(100), int2hex(255)
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} {00 64 FF}
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do_execsql_test 1.1 {
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CREATE TABLE t1(i, h);
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CREATE INDEX i1 ON t1(h);
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WITH data(a, b) AS (
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SELECT 1, int2hex(1)
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UNION ALL
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SELECT a+1, int2hex(a+1) FROM data WHERE a<40
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)
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INSERT INTO t1 SELECT * FROM data;
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} {}
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# do_rollback_test ID SWITCHES
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#
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# where SWITCHES are:
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#
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# -setup SQL script to open transaction and begin writing.
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# -select SELECT to execute after -setup script
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# -result Expected result of -select statement
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# -rollback Use this SQL command ("ROLLBACK" or "ROLLBACK TO ...") to
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# rollback the transaction in the middle of the -select statment
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# execution.
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#
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proc do_rollback_test {tn args} {
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set A(-setup) ""
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set A(-select) ""
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set A(-result) ""
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set A(-rollback) ROLLBACK
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array set O $args
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foreach k [array names O] {
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if {[info exists A($k)]==0} { error "unknown option: $k" }
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set A($k) $O($k)
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}
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for {set iRollback 0} 1 {incr iRollback} {
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catch { db eval ROLLBACK }
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set res [list]
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db eval $A(-setup)
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set i 0
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db eval $A(-select) x {
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if {$i==$iRollback} { db eval $A(-rollback) }
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foreach k $x(*) { lappend res $x($k) }
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incr i
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}
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do_test $tn.$iRollback [list set {} $res] [list {*}$A(-result)]
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if {$i < $iRollback} break
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}
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}
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do_rollback_test 2.1 -setup {
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BEGIN;
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DELETE FROM t1 WHERE (i%2)==1;
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} -select {
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SELECT i FROM t1 WHERE (i%2)==0
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} -result {
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2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
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}
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do_rollback_test 2.2 -setup {
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BEGIN;
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DELETE FROM t1 WHERE (i%4)==1;
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SAVEPOINT one;
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DELETE FROM t1 WHERE (i%2)==1;
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} -rollback {
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ROLLBACK TO one;
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} -select {
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SELECT i FROM t1 WHERE (i%2)==0
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} -result {
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2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
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}
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#--------------------------------------------------------------------
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# Try with some index scans
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#
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do_eqp_test 3.1 {
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SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h DESC;
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} {0 0 0 {SCAN TABLE t1 USING INDEX i1}}
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do_rollback_test 3.2 -setup {
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BEGIN;
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DELETE FROM t1 WHERE (i%2)==1;
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} -select {
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SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h DESC;
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} -result {
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40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
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}
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do_rollback_test 3.3 -setup {
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BEGIN;
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DELETE FROM t1 WHERE (i%4)==1;
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SAVEPOINT one;
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DELETE FROM t1 WHERE (i%2)==1;
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} -rollback {
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ROLLBACK TO one;
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} -select {
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SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h DESC;
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} -result {
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40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
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}
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#--------------------------------------------------------------------
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# Now with some index scans that feature overflow keys.
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#
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set leader [string repeat "abcdefghij" 70]
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do_execsql_test 4.1 { UPDATE t1 SET h = $leader || h; }
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do_eqp_test 4.2 {
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SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC;
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} {0 0 0 {SCAN TABLE t1 USING INDEX i1}}
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do_rollback_test 4.3 -setup {
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BEGIN;
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DELETE FROM t1 WHERE (i%2)==1;
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} -select {
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SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC;
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} -result {
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2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
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}
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do_rollback_test 4.4 -setup {
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BEGIN;
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DELETE FROM t1 WHERE (i%4)==1;
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SAVEPOINT one;
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DELETE FROM t1 WHERE (i%2)==1;
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} -rollback {
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ROLLBACK TO one;
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} -select {
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SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC;
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} -result {
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2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
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}
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finish_test
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