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114 lines
3.0 KiB
Plaintext
114 lines
3.0 KiB
Plaintext
# 2014 March 25.
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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.
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#
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# The tests in this file verify that sorting works when the library is
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# configured to use mmap(), but the temporary files generated by the
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# sorter are too large to be completely mapped.
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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 sort3
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#-------------------------------------------------------------------------
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# Sort some large ( > 4KiB) records.
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#
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proc cksum {x} {
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set i1 1
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set i2 2
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binary scan $x c* L
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foreach {a b} $L {
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set i1 [expr (($i2<<3) + $a) & 0x7FFFFFFF]
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set i2 [expr (($i1<<3) + $b) & 0x7FFFFFFF]
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}
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list $i1 $i2
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}
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db func cksum cksum
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do_execsql_test 1.0 {
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PRAGMA cache_size = 5;
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CREATE TABLE t11(a, b);
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INSERT INTO t11 VALUES(randomblob(5000), NULL);
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --2
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --3
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --4
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --5
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --6
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --7
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --8
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INSERT INTO t11 SELECT randomblob(5000), NULL FROM t11; --9
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UPDATE t11 SET b = cksum(a);
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}
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foreach {tn mmap_limit} {
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1 0
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2 1000000
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} {
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do_test 1.$tn {
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sqlite3_test_control SQLITE_TESTCTRL_SORTER_MMAP db $mmap_limit
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set prev ""
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db eval { SELECT * FROM t11 ORDER BY b } {
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if {$b != [cksum $a]} {error "checksum failed"}
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if {[string compare $b $prev] < 0} {error "sort failed"}
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set prev $b
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}
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set {} {}
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} {}
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}
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# Sort roughly 20MB of data. Once with a mmap limit of 5MB and once without.
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#
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foreach {itest limit} {
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1 5000000
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2 0x7FFFFFFF
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} {
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sqlite3_test_control SQLITE_TESTCTRL_SORTER_MMAP db $limit
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do_execsql_test 2.$itest {
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WITH r(x,y) AS (
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SELECT 1, randomblob(1000)
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UNION ALL
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SELECT x+1, randomblob(1000) FROM r
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LIMIT 20000
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)
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SELECT count(*), sum(length(y)) FROM r GROUP BY (x%5);
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} {
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4000 4000000
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4000 4000000
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4000 4000000
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4000 4000000
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4000 4000000
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}
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}
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# Sort more than 2GB of data. At one point this was causing a problem.
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# This test might take one minute or more to run.
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#
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do_execsql_test 3 {
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PRAGMA cache_size = 20000;
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WITH r(x,y) AS (
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SELECT 1, randomblob(1000)
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UNION ALL
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SELECT x+1, randomblob(1000) FROM r
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LIMIT 2200000
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)
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SELECT count(*), sum(length(y)) FROM r GROUP BY (x%5);
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} {
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440000 440000000
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440000 440000000
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440000 440000000
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440000 440000000
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440000 440000000
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}
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finish_test
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