1# 2001 September 15 2# 3# The author disclaims copyright to this source code. In place of 4# a legal notice, here is a blessing: 5# 6# May you do good and not evil. 7# May you find forgiveness for yourself and forgive others. 8# May you share freely, never taking more than you give. 9# 10#*********************************************************************** 11# This file implements regression tests for SQLite library. The 12# focus of this file is testing the 'progress callback'. 13# 14# $Id: progress.test,v 1.8 2007/06/15 14:53:53 danielk1977 Exp $ 15 16set testdir [file dirname $argv0] 17source $testdir/tester.tcl 18 19# If the progress callback is not available in this build, skip this 20# whole file. 21ifcapable !progress { 22 finish_test 23 return 24} 25 26# Build some test data 27# 28execsql { 29 BEGIN; 30 CREATE TABLE t1(a); 31 INSERT INTO t1 VALUES(1); 32 INSERT INTO t1 VALUES(2); 33 INSERT INTO t1 VALUES(3); 34 INSERT INTO t1 VALUES(4); 35 INSERT INTO t1 VALUES(5); 36 INSERT INTO t1 VALUES(6); 37 INSERT INTO t1 VALUES(7); 38 INSERT INTO t1 VALUES(8); 39 INSERT INTO t1 VALUES(9); 40 INSERT INTO t1 VALUES(10); 41 COMMIT; 42} 43 44 45# Test that the progress callback is invoked. 46do_test progress-1.0 { 47 set counter 0 48 db progress 1 "[namespace code {incr counter}] ; expr 0" 49 execsql { 50 SELECT * FROM t1 51 } 52 expr $counter > 1 53} 1 54do_test progress-1.0.1 { 55 db progress 56} {::namespace inscope :: {incr counter} ; expr 0} 57do_test progress-1.0.2 { 58 set v [catch {db progress xyz bogus} msg] 59 lappend v $msg 60} {1 {expected integer but got "xyz"}} 61 62# Test that the query is abandoned when the progress callback returns non-zero 63do_test progress-1.1 { 64 set counter 0 65 db progress 1 "[namespace code {incr counter}] ; expr 1" 66 set rc [catch {execsql { 67 SELECT * FROM t1 68 }}] 69 list $counter $rc 70} {1 1} 71 72# Test that the query is rolled back when the progress callback returns 73# non-zero. 74do_test progress-1.2 { 75 76 # This figures out how many opcodes it takes to copy 5 extra rows into t1. 77 db progress 1 "[namespace code {incr five_rows}] ; expr 0" 78 set five_rows 0 79 execsql { 80 INSERT INTO t1 SELECT a+10 FROM t1 WHERE a < 6 81 } 82 db progress 0 "" 83 execsql { 84 DELETE FROM t1 WHERE a > 10 85 } 86 87 # Now set up the progress callback to abandon the query after the number of 88 # opcodes to copy 5 rows. That way, when we try to copy 6 rows, we know 89 # some data will have been inserted into the table by the time the progress 90 # callback abandons the query. 91 db progress $five_rows "expr 1" 92 catchsql { 93 INSERT INTO t1 SELECT a+10 FROM t1 WHERE a < 9 94 } 95 execsql { 96 SELECT count(*) FROM t1 97 } 98} 10 99 100# Test that an active transaction remains active and not rolled back 101# after the progress query abandons a query. 102# 103# UPDATE: It is now recognised that this is a sure route to database 104# corruption. So the transaction is rolled back. 105do_test progress-1.3 { 106 107 db progress 0 "" 108 execsql BEGIN 109 execsql { 110 INSERT INTO t1 VALUES(11) 111 } 112 db progress 1 "expr 1" 113 catchsql { 114 INSERT INTO t1 VALUES(12) 115 } 116 db progress 0 "" 117 catchsql COMMIT 118} {1 {cannot commit - no transaction is active}} 119do_test progress-1.3.1 { 120 execsql { 121 SELECT count(*) FROM t1 122 } 123} 10 124 125# Check that a value of 0 for N means no progress callback 126do_test progress-1.4 { 127 set counter 0 128 db progress 0 "[namespace code {incr counter}] ; expr 0" 129 execsql { 130 SELECT * FROM t1; 131 } 132 set counter 133} 0 134 135db progress 0 "" 136 137# Make sure other queries can be run from within the progress 138# handler. Ticket #1827 139# 140do_test progress-1.5 { 141 set rx 0 142 proc set_rx {args} { 143 db progress 0 {} 144 set ::rx [db eval {SELECT count(*) FROM t1}] 145 return [expr 0] 146 } 147 db progress 10 set_rx 148 db eval { 149 SELECT sum(a) FROM t1 150 } 151} {55} 152do_test progress-1.6 { 153 set ::rx 154} {10} 155 156# Check that abandoning a query using the progress handler does 157# not cause other queries to abort. Ticket #2415. 158do_test progress-1.7 { 159 execsql { 160 CREATE TABLE abc(a, b, c); 161 INSERT INTO abc VALUES(1, 2, 3); 162 INSERT INTO abc VALUES(4, 5, 6); 163 INSERT INTO abc VALUES(7, 8, 9); 164 } 165 166 set ::res [list] 167 db eval {SELECT a, b, c FROM abc} { 168 lappend ::res $a $b $c 169 db progress 10 "expr 1" 170 catch {db eval {SELECT a, b, c FROM abc} { }} msg 171 lappend ::res $msg 172 } 173 174 set ::res 175} {1 2 3 interrupted 4 5 6 interrupted 7 8 9 interrupted} 176 177finish_test 178