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Diffstat (limited to '')
-rw-r--r-- | test/descidx3.test | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/test/descidx3.test b/test/descidx3.test new file mode 100644 index 0000000..30dd8f8 --- /dev/null +++ b/test/descidx3.test @@ -0,0 +1,155 @@ +# 2006 January 02 +# +# 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 implements regression tests for SQLite library. The +# focus of this script is descending indices. +# +# $Id: descidx3.test,v 1.6 2008/03/19 00:21:31 drh Exp $ +# + +set testdir [file dirname $argv0] +source $testdir/tester.tcl + +# Do not use a codec for tests in this file, as the database file is +# manipulated directly using tcl scripts (using the [hexio_write] command). +# +do_not_use_codec + +ifcapable !bloblit { + finish_test + return +} +#db eval {PRAGMA legacy_file_format=OFF} +sqlite3_db_config db LEGACY_FILE_FORMAT 0 + +# This procedure sets the value of the file-format in file 'test.db' +# to $newval. Also, the schema cookie is incremented. +# +proc set_file_format {newval} { + hexio_write test.db 44 [hexio_render_int32 $newval] + set schemacookie [hexio_get_int [hexio_read test.db 40 4]] + incr schemacookie + hexio_write test.db 40 [hexio_render_int32 $schemacookie] + return {} +} + +# This procedure returns the value of the file-format in file 'test.db'. +# +proc get_file_format {{fname test.db}} { + return [hexio_get_int [hexio_read $fname 44 4]] +} + +# Verify that the file format starts as 4. +# +do_test descidx3-1.1 { + execsql { + CREATE TABLE t1(i INTEGER PRIMARY KEY,a,b,c,d); + CREATE INDEX t1i1 ON t1(a DESC, b ASC, c DESC); + CREATE INDEX t1i2 ON t1(b DESC, c ASC, d DESC); + } + get_file_format +} {4} + +# Put some information in the table and verify that the descending +# index actually works. +# +do_test descidx3-2.1 { + execsql { + INSERT INTO t1 VALUES(1, NULL, NULL, NULL, NULL); + INSERT INTO t1 VALUES(2, 2, 2, 2, 2); + INSERT INTO t1 VALUES(3, 3, 3, 3, 3); + INSERT INTO t1 VALUES(4, 2.5, 2.5, 2.5, 2.5); + INSERT INTO t1 VALUES(5, -5, -5, -5, -5); + INSERT INTO t1 VALUES(6, 'six', 'six', 'six', 'six'); + INSERT INTO t1 VALUES(7, x'77', x'77', x'77', x'77'); + INSERT INTO t1 VALUES(8, 'eight', 'eight', 'eight', 'eight'); + INSERT INTO t1 VALUES(9, x'7979', x'7979', x'7979', x'7979'); + SELECT count(*) FROM t1; + } +} 9 +do_test descidx3-2.2 { + execsql { + SELECT i FROM t1 ORDER BY a; + } +} {1 5 2 4 3 8 6 7 9} +do_test descidx3-2.3 { + execsql { + SELECT i FROM t1 ORDER BY a DESC; + } +} {9 7 6 8 3 4 2 5 1} + +# The "natural" order for the index is decreasing +do_test descidx3-2.4 { + execsql { + SELECT i FROM t1 WHERE a<=x'7979'; + } +} {9 7 6 8 3 4 2 5} +do_test descidx3-2.5 { + execsql { + SELECT i FROM t1 WHERE a>-99; + } +} {9 7 6 8 3 4 2 5} + +# Even when all values of t1.a are the same, sorting by A returns +# the rows in reverse order because this the natural order of the +# index. +# +do_test descidx3-3.1 { + execsql { + UPDATE t1 SET a=1; + SELECT i FROM t1 ORDER BY a; + } +} {9 7 6 8 3 4 2 5 1} +do_test descidx3-3.2 { + execsql { + SELECT i FROM t1 WHERE a=1 AND b>0 AND b<'zzz' + } +} {2 4 3 8 6} +do_test descidx3-3.3 { + execsql { + SELECT i FROM t1 WHERE b>0 AND b<'zzz' + } +} {6 8 3 4 2} +do_test descidx3-3.4 { + execsql { + SELECT i FROM t1 WHERE a=1 AND b>-9999 AND b<x'ffffffff' + } +} {5 2 4 3 8 6 7 9} +do_test descidx3-3.5 { + execsql { + SELECT i FROM t1 WHERE b>-9999 AND b<x'ffffffff' + } +} {9 7 6 8 3 4 2 5} + +ifcapable subquery { + # If the subquery capability is not compiled in to the binary, then + # the IN(...) operator is not available. Hence these tests cannot be + # run. + do_test descidx3-4.1 { + lsort [execsql { + UPDATE t1 SET a=2 WHERE i<6; + SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz'; + }] + } {2 3 4 6 8} + do_test descidx3-4.2 { + execsql { + UPDATE t1 SET a=1; + SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz'; + } + } {2 4 3 8 6} + do_test descidx3-4.3 { + execsql { + UPDATE t1 SET b=2; + SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz'; + } + } {9 7 6 8 3 4 2 5 1} +} + +finish_test |