| # 2014 November 12 |
| # |
| # The author disclaims copyright to this source code. In place of |
| # a legal notice, here is a blessing: |
| # |
| # May you do good and not evil. |
| # May you find forgiveness for yourself and forgive others. |
| # May you share freely, never taking more than you give. |
| # |
| #*********************************************************************** |
| # |
| # This file containst tests to verify that ROLLBACK or ROLLBACK TO |
| # operations interact correctly with ongoing SELECT statements. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| set ::testprefix rollback2 |
| |
| proc int2hex {i} { format %.2X $i } |
| db func int2hex int2hex |
| do_execsql_test 1.0 { |
| SELECT int2hex(0), int2hex(100), int2hex(255) |
| } {00 64 FF} |
| do_execsql_test 1.1 { |
| CREATE TABLE t1(i, h); |
| CREATE INDEX i1 ON t1(h); |
| WITH data(a, b) AS ( |
| SELECT 1, int2hex(1) |
| UNION ALL |
| SELECT a+1, int2hex(a+1) FROM data WHERE a<40 |
| ) |
| INSERT INTO t1 SELECT * FROM data; |
| } {} |
| |
| |
| # do_rollback_test ID SWITCHES |
| # |
| # where SWITCHES are: |
| # |
| # -setup SQL script to open transaction and begin writing. |
| # -select SELECT to execute after -setup script |
| # -result Expected result of -select statement |
| # -rollback Use this SQL command ("ROLLBACK" or "ROLLBACK TO ...") to |
| # rollback the transaction in the middle of the -select statment |
| # execution. |
| # |
| proc do_rollback_test {tn args} { |
| set A(-setup) "" |
| set A(-select) "" |
| set A(-result) "" |
| set A(-rollback) ROLLBACK |
| |
| array set O $args |
| foreach k [array names O] { |
| if {[info exists A($k)]==0} { error "unknown option: $k" } |
| set A($k) $O($k) |
| } |
| |
| for {set iRollback 0} 1 {incr iRollback} { |
| catch { db eval ROLLBACK } |
| set res [list] |
| db eval $A(-setup) |
| |
| set i 0 |
| db eval $A(-select) x { |
| if {$i==$iRollback} { db eval $A(-rollback) } |
| foreach k $x(*) { lappend res $x($k) } |
| incr i |
| } |
| |
| do_test $tn.$iRollback [list set {} $res] [list {*}$A(-result)] |
| if {$i < $iRollback} break |
| } |
| } |
| |
| do_rollback_test 2.1 -setup { |
| BEGIN; |
| DELETE FROM t1 WHERE (i%2)==1; |
| } -select { |
| SELECT i FROM t1 WHERE (i%2)==0 |
| } -result { |
| 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 |
| } |
| |
| do_rollback_test 2.2 -setup { |
| BEGIN; |
| DELETE FROM t1 WHERE (i%4)==1; |
| SAVEPOINT one; |
| DELETE FROM t1 WHERE (i%2)==1; |
| } -rollback { |
| ROLLBACK TO one; |
| } -select { |
| SELECT i FROM t1 WHERE (i%2)==0 |
| } -result { |
| 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 |
| } |
| |
| #-------------------------------------------------------------------- |
| # Try with some index scans |
| # |
| do_eqp_test 3.1 { |
| SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h DESC; |
| } {0 0 0 {SCAN TABLE t1 USING INDEX i1}} |
| do_rollback_test 3.2 -setup { |
| BEGIN; |
| DELETE FROM t1 WHERE (i%2)==1; |
| } -select { |
| SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h DESC; |
| } -result { |
| 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 |
| } |
| do_rollback_test 3.3 -setup { |
| BEGIN; |
| DELETE FROM t1 WHERE (i%4)==1; |
| SAVEPOINT one; |
| DELETE FROM t1 WHERE (i%2)==1; |
| } -rollback { |
| ROLLBACK TO one; |
| } -select { |
| SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h DESC; |
| } -result { |
| 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 |
| } |
| |
| #-------------------------------------------------------------------- |
| # Now with some index scans that feature overflow keys. |
| # |
| set leader [string repeat "abcdefghij" 70] |
| do_execsql_test 4.1 { UPDATE t1 SET h = $leader || h; } |
| |
| do_eqp_test 4.2 { |
| SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC; |
| } {0 0 0 {SCAN TABLE t1 USING INDEX i1}} |
| do_rollback_test 4.3 -setup { |
| BEGIN; |
| DELETE FROM t1 WHERE (i%2)==1; |
| } -select { |
| SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC; |
| } -result { |
| 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 |
| } |
| do_rollback_test 4.4 -setup { |
| BEGIN; |
| DELETE FROM t1 WHERE (i%4)==1; |
| SAVEPOINT one; |
| DELETE FROM t1 WHERE (i%2)==1; |
| } -rollback { |
| ROLLBACK TO one; |
| } -select { |
| SELECT i FROM t1 WHERE (i%2)==0 ORDER BY h ASC; |
| } -result { |
| 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 |
| } |
| |
| finish_test |